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Mentor Graphics Glossary

1. J KILIMN OP QIRISITIU Y 7 PLOT DEFAULT PRINTER Default printer name used by Mentor Graphics applications and the spooling command MGC USER Sets the name of the current logged in user MGC WD Sets the project working directory for DDMS MGLS The Mentor Graphics Licensing System which is based FLEXIm with Mentor Graphics extensions MGLS LICENSE FILE MGLS LICENSE file works like LM LICENSE FILE but also tells MGLS to ignore the setting of LM LICENSE FILE and to get the license file or server from the value of MGLS LICENSE FILE Minimize To turn a window into a window icon The term iconify is sometimes used instead of minimize Minimize Button A window control button on the window frame used to turn a window into a window icon See also Window Control Button Minst The Domain OS Media Install program The minst program creates and loads an authorized area from media Mixed Net A net that is connected to elements owned by more than one kernel or solver Mixed Signal Simulation Simulation that uses both analog and digital simulation algorithms M 8 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Mnemonic Character A single underlined character of a menu item that allows you to select the item by pressing the corresponding key on the keyboard Mode See State or Setting Model A representation of an aspect
2. J KILIMN OP QIRISITIU Y 27 Cache To place data in a quickly accessible area of memory Also an area of memory that allows for quick access to its contents See also Memory Caching and File Caching CAD Computer Aided Design The use of computer based applications to assist in any kind of design process including physical layout of electronic designs and preparation of manufacturing tooling CAD also refers to automated mechanical design CAE Computer Aided Engineering The use of computer based applications to assist in the creation of electronic designs from initial specification through layout analysis and production CalComp Plotter Any number of plotting devices manufactured by CalComp Inc CalComp supplies a broad range of plotting devices including penplotters and electrostatic plotters as well as thermal and wax transfer devices Mentor Graphics supports a very specific subset of the CalComp product line See the CalComp Print Server Manual for additional information Callable An AMPLE function or builtin that can accept program control a function you can execute Cancel A label given to a push button in some dialog boxes and prompt bars that closes the object without performing the operation implied by the dialog box or prompt bar Capacitance Limit The maximum capacitance that can be placed on an input or net without violating vendor specified limits Capacitance Load The amo
3. J KILIMN OP QIRISITIU Y 7 Property Specification Describes what electrical and physical properties Device Recognition calculates and how it calculates them for the instance of this device Property Text Property text is a graphical representation of a property that you add to a specific layer of your design The property value is displayed as an object that you can select in the layout It has characteristics such as height justification and orientation You can select highlight move delete group rotate and flip property text independent of the owning object Property Value The property value is an arbitrary non empty string that contains the information that you want conveyed to ICgraph and other tools Proportional Characters A typeface that varies the horizontal print space of each character based on the character s width For example the letter 1 is thinner than the letter m and takes up less horizontal print space This manual uses proportionally spaced characters Protection A design object s protection refers to the granting of access permissions to other users Protocol A network communication language that establishes a set of rules for a particular communication task Three examples of network protocols are transmission control protocol TCP a stream based protocol user datagram protocol UDP a message based protocol and internet protocol IP a routing protocol Prototype Panel See Co
4. QIRISITIU Y 27 O 6 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 7 Glossary The following terms are described in this section Packet Pad Page Description Language Palette Panel Parameter Parameter Estimation Parameter Extraction Parameterized Device Parasitic Resistance Parent Part Partial Condition Partial Transition Part Library Part Model Part Number Partition Partitioning Paste Pathname Path PCF PDL Peek Peeked Checking Mode Performance Characteristics Performance Optimization Permissions Persistence Personal Thesaurus Mentor Graphics Glossary B 1 PEX Pgtext Phy_pin Physical Event Physical Page Number Physical Symbol Physical Transcript PIC PICture file Pin Pin Layer Pin Name Pitch Pixel Place Placement Plain Text Plotter Point Point Size Point to Point Routing Pointer Pointing Device Polygon Containment Polygon Measurement Operation Polygon Topological Operation Pop Popup Command Line Popup Menu Port Port Member P 1 J KILIMN OP QIRISITIU Y 7 Port Number Proportional Characters PostScript Protection PostScript Device Protocol PostScript Interpreter Prototype Panel Power Path Proximity Search PowerFET Pruned Press Ptxt Primary Entry Pulldown Menu Primitive Primitive Property Primitive Site Print Job Print Queue
5. OP QIRISITIU Y 7 allow you to quickly enter a short series of characters to access most menu functions Menu Bar A rectangular area at the top of the session window that contains the pulldown menu names for the application The menu bar might change when a new window or application becomes active Menu Item One selection on a menu Each menu item can call a function invoke a cascading menu or display a dialog box or prompt bar Menu Mouse Button The mouse button used for menu operations By default the menu mouse button is the right button on a three or two button mouse Menu Path The sequence of menu items to follow to cause a specific function or command to execute For example to open a a transcript window choose the MGC Transcript Show Transcript menu path to display the logical transcript window Menu driven Application Application commands that can be given through menu selections Notepad is a menu driven editor Message Area An area along the bottom of a session window that displays notes warnings or errors You can display or hide the message area as well as determine the area s height Message Box A window that provides information displays the current state of work in progress asks a question issues a warning or draws attention to an error Metadata Metadata is information about a design object which is contained in the design object s attribute file Some of the information foun
6. J KILIMN OP QIRISITIU Y 7 DSS Application An application built using DSS This includes small prototypes or large fully functional applications The icon strip includes some examples of DSS applications DTR See Design Traverser Dual Inline Package A package of electrical connections enclosed in plastic or other material whose external connecting pins are set in two parallel rows DIPs are intended to be plugged into a circuit board DVAS Design Viewing and Analysis Support Consists of selecting viewing highlighting analyzing reporting grouping and naming functionality used by multiple applications DVE Design Viewpoint Editor An interactive application used to create and edit design viewpoints It enables you to set and change the rules that configure a design including the creation and management of back annotation data Dynamic Rectangle A rectangle representing the outer boundaries of an object When you move an object a window for example a rectangle moves with the mouse pointer while the object remains stationary When you release the mouse button the object moves to the location where you placed the dynamic rectangle D 18 Mentor Graphics Glossary B 1 MN OP S TIUIVIWIX Y 7 Glossary E The following terms are described in this section ECO Event EDDM Exit Link EDDM Netlist EXPAND Edge Explicit Clock Edge Expansion Operation Expression Edge
7. J KILIMN OP 5 Y 7 Type Definition Type Definition Package Type Definition Package Component Type Definition Package List Type Definition Package Source View Type Registry Typeface T 2 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Tab Window Manager A window manager for the X window system Target Path The target path is the location that a retargetable configuration entry is released or copied to during a copy or release operation See also Retargetable Entry Target Technology See Destination Technology TCP IP Transmission Control Protocol Internet Protocol An acronym used to refer to the TCP and IP protocols and related internet protocols such as FTP and Telnet as defined by DARPA It is a stream based protocol for sending information over a network Administrative Files A collection of files that contain the data necessary for TCP IP to route packets between hosts TCP IP administrative files include etc hosts etc networks etc gateways etc hosts equiv and etc resolv conf While some files are found on every network the presence of others depend on the network layout Technology Environment Vendor supplied parameters defining the performance of the technology under varying conditions Telnet A remote terminal emulation protocol Telnet uses TCP and IP as underlying protocols Termination Script A termination scri
8. 3 A Mentor Graphics netlist format used by AutoLogic and other tools GMF See Graphics MetaFile GN See Global Net Gothic Font A monospaced sans serif font family that can be printed on a CheckPlot plotter Mentor Graphics Glossary 1 G 3 QIRISITIU Y 27 GPR See Graphics PRimitive Graphic Input Device The hardware you use to quickly position the mouse pointer or insertion cursor on the display Graphics input devices include the mouse puck and touchpad See also Hitachi and Summagraphics Graphic mode Printing In this print mode each bit of print information is simply converted into the presence or absence of a dot of ink There are no higher level interpretations made of the print information Because there is no conversion or interpretation performed on the print information in this print mode the print speed is directly related to the amount of information processed Graphical Interface See Common User Interface Graphical User Interface A form of communication between users and computers that uses graphics oriented software such as windows menus and icons to make the user s interaction with the computer more intuitive Graphics Cursor The blinking pointer on your screen that you can move with a graphics input device such as a mouse or with the scroll keys Graphics Insertion Cursor See Insertion Cursor Graphics MetaFile The standard bitma
9. Edge Topological Operation Edge topological operations generate derived edge layers by selecting edges from the first input layer that satisfy certain topological relationships with either polygons or edges from the second input layer Edge based Polygon Selection Operation Edge based polygon selection operations select polygons that either share or do not share edges of a derived edge layer E 2 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 EDIF Electronic Design Interchange Format A common format of transferring data between various EDA systems Edit Cursor The point of insertion marked by a vertical bar Edit Mode ICgraph has three editing modes or levels of rules checking that you can assign to each cell when you create it The editing modes are Geometry Editing GE Connectivity Editing CE and Correct By Construction CBC Electronic Design Data Model A generic data model used for exchanging information and persistent storage of connectivity Electronic Design Data Model Design Viewpoint A special design object that contains design configuration rules for evaluating the source object related design information and references to back annotation objects Element A graphic item on a diagram that can be added moved or deleted Element types include any connectable element connector title and annotation block See also Requirement View Element Element Name I
10. ICrules Design Rule Checker ICrules Design Rule Checker ICrules DRC is an electrical and design rule verifier that analyzes your layout in order to locate layout design rule violations ICrules DRC can utilize both the layout data and connectivity data of your design to verify that the layout conforms to the design rules IC Session An active IC Environment is called an IC Session ICtrace The Layout Versus Schematic checker part of IC Station and ICverify ICverify The desktop layout verification toolset ICextract ICrules and ICtrace that are part of IC Station ID A unique identifier A design object is assigned an ID when its attribute file is created or when the object is first referenced ID Netlist Contains unique device identification numbers and device node connection information The connection information takes the form of nets which logically represent the physical path connections in your layout Each net is uniquely identified by an identification number IDEA Specifies the location of the Idea Tree Mentor Graphics Glossary B 1 3 J KILIMN OP QIRISITIU Y 7 Idea Station A workstation with Mentor Graphics Falcon Framework Design Architect Design Dataport Design Viewpoint Editor and QuickSim II applications and some procedural interfaces installed enabling an engineer to perform schematic capture simulation and design file management Implementation Mod
11. DISABLE BACKING STOR E MGC ERI HOSTS MGC HOME MGC IC QUERY ON MERGE MGC KBD MGC LOCATION MAP NO DASHED WIDE LINES MGC PLOT DEFAULT PRINTER MGC USER MGC WD MGLS MGLS LICENSE FILE Minimize Minimize Button Minst Mixed Net Mixed Signal Simulation Mnemonic Character Mode Model Model Configuration Model Datasheet Model Evaluation Model Labels Model Name Model Parameter Model Property Model Registration Model Template M 1 J KILIMN OP 5 Y 7 Modelfile Modeling Modeling Block Model View Monospace Font Moore State Machine MOSFET Motif Motif Window Manager Mount Mountd Mouse Mouse Pointer Move Moving Pointer MSB MSR Print Server Must connect MWM My net M 2 Mentor Graphics Glossary B 1 5 Y 27 sequence of commands executed in order usually invoked by entering a single command or keystroke See also Function Macromodel A set of circuit elements AccuSim II primitives that are interconnected to form a model of a discrete semiconductor or a semiconductor integrated circuit for which there is no AccuSim II primitive A macromodel takes the form of an AccuSim II subcircuit and is equivalent to a SPICE SUBCKT Mentor Graphics uses macromodels to develop some AccuParts models Some examples of macromodeling include the following compon
12. Relevel Merge An operation available in the DFD editor that merges a set of instances into a new Data Flow Diagram view in a new Transform Component A relevel merge adds a level in the component hierarchy Relevel Replace An operation available in the DFD editor that replaces a transform instance with the contents of its Data Flow Diagram view A relevel replace deletes a level in the component hierarchy Remote Host A host other than the one you are currently working on which is on the same local or wide area network Remote Network A network that is not directly connected to your host A remote network is separated from your local network by one or more hops Remote Procedure Call Daemon A server that maintains information about objects and interfaces on the local host The rpcd also forwards requests to the appropriate server on the local host An rpcd must be running on every HP Apollo workstation that contains V8 software On non HP Apollo workstations the local location broker daemon llbd serves the same function as the rpcd Repeating Entry Box An entry box that reveals a copy of the entry box when a value is supplied Requirement List A list of hard requirements Normally generated from the Requirement View R 6 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Requirement Traceability The process of tracking an original specification or requirement through each phase
13. A group of elements in the AccuParts library with similar functionality Library categories are directories containing simulation models of similar component types Some library categories include current regulator diode comparator n channel JFET PNP BJT operational amplifier and magnetic core material Library Creation Library creation is the process of creating a library of standard cells that you will use in your design Mentor Graphics Glossary B 1 L 3 QIRISITIU Y 7 Library Server A library server is a BOLD server that controls access to all documents in a particular library License Daemon A program that administers Mentor Graphics licenses MGLS includes two daemons Imgrd and mgcld License Data File An ASCII file that contains the customer site identification license server and daemon information and feature lines which are the actual licenses License Server A program that administers a database of floating licenses The license server administers floating licenses by accepting requests from applications and then granting available licenses to those applications that qualify Link 1 A type of file that acts as a pointer to another file location 2 A symbol on a State Transition Diagram Links are a form of on page connector used to avoid long transition arcs and do not carry any semantic information See also Exit Link List Box A dialog box gadget tha
14. A server that renders data into an acceptable form for displaying printing or plotting An ERI server can be part of an application and therefore user transparent or it can be an application by itself Error Manager Manages the display and transcription of all user interface errors warnings notes and failures Error directed Operation Error directed operations analyze the polygons on all of the original layers to find edges of polygons that are at acute angles to each other edges that are skew and edges that are not on grid Estimation See Parameter Estimation Ethernet A mid range type of local area network LAN Originally Ethernet was jointly developed by Xerox Intel and DEC The IEEE adopted the specifications of Ethernet as the IEEE 802 specification In an Ethernet a network device such as a workstation can broadcast and receive signals to and from other devices along or across terminated cable segments Evaluation The act of a simulator determining the output of an instance based on the instance s input values See also Design Evaluation Mentor Graphics Glossary B 1 E 5 J KILIMN OP QIRISITIU Y 27 Event 1 An occurrence of a rising or falling edge or a voltage crossing a threshold An event causes a modeling block to perform some action The term event is used mainly with the digital modeling blocks 2 A signal from the hardware input devices that generates a Commo
15. A technique used to verify a design by physically interconnecting sample components to measure the design s electrical behavior using lab instruments Bridge A communications device that selectively copies packets between networks of the same type using the same protocol A bridge matches up the physical and data link layers ISO model layers 1 and 2 of connecting networks See also Router and Gateway Broker A daemon that manages information about objects and interfaces to the objects A program that wants to become an interface client can use a broker to obtain information about daemons that export the interface Btxt Non persistent text used in single line Notepad windows B 6 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Bubble Jet Printing A variation of ink jet printer technology Refer to the Bubble Jet printer user s manual for a description of bubble jet operation See also Ink Jet Printing Build Rules The build rules tell the Design Manager which design objects to include in and which design to exclude from a configuration during a build You can specify build rules for each primary entry in a configuration If you do not specify the build rules the primary entry inherits the default build rules See also Configuration Entry and Default Build Rules Builtin A C programming routine called from AMPLE See also Function Bundle An object containing nets and or bus
16. DFI Dialog Box Dialog Box Control Dialog Box Indicator D 1 J KILIMN OP QIRISITIU Y 7 Dialog Navigator Digital Modelfile Digital Word Dimensional Check Operation Dimensional Check Rules File Operation Dimmed Menu Item Dimmed Selection DIP Direct Connectivity Extraction Direct ICextract Parasitic Extraction Direct ICextract PEX Direct ICtrace Layout Versus Schematic Direct ICtrace LVS Direct PEX Direct Verification Directive Directory Discrepancy Discrete Component Discrete Device Discrete Model Parameter Display Display Manager Display Manager Window Dissolve Distributed Parasitic Extraction DM DO File Document Area Document Window Domain Domain OS Dont touch D 2 Dots Per Inch Double clicking Downloading DPI Draft Mode Drag DRC Drive DSC DSS Application DTR Dual Inline Package DVAS DVE Dynamic Rectangle Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Daemon A continually running process that handles a specific function or system wide functions An example is the TCP IP protocol server process tcpd which initializes several internal tables that are required for operation of the TCP IP protocols and enables a system s socket call interface Daemon is also another name for server See also BOLD Daemon Data Objects directories or files created by Mentor Graphics app
17. allows the connection of flows with different type definitions A splice typically contains simple assignment statements that do not justify the use of a VHDL Specification contained in a transform instance SPM See Server Process Manager Spool To use a queued buffer for an operation such as printing where files are sent to wait for the operation Most spoolers use the first in first out FIFO method to process files Spooled Data A file containing the actual graphical or textual data to be translated by the print server Because this data file is created when the print function is called at spool time it is referred to as the spooled data file A job attribute file JAF which contains printing options for the print job is also created at this time Spooler Node See Queue Site Standard The basal face of a given font family The standard face embodies the basic shape and style of the letterforms of the font family before they are slanted italics or thickened bold See also Bold Face Font Family and Italic Start A Server To create a new library server resource server or network server process Mentor Graphics Glossary B 1 S 13 J KILIMN OP QIRISITIU Y 7 Start State The initial state of a State Machine that represents the state of the State Machine before any transitions occur Startup File A user created file of commands or functions If it is placed in the proper
18. connect two layers with a shape on each layer You can implement vias in IC Station as via objects or via instances Via objects are simpler but have more restrictions than via instances Via objects are not cell instances A via created as a cell is referred to as a via instance You use create cell to create via instances and you use add_via to create via objects and via instances View 1 Within application graphics a view is a panel that also contains information affecting the way the data within the panel is displayed 3D orientation layers displayed and so on Functions that accept panels should also accept views while ignoring their attributes Functions that accept views should also accept panels as views without attributes 2 EDIF terminology for an object that is similar in concept to a model A view contains two parts an interface which is similar to a symbol Mentor Graphics Glossary B 1 V 5 OP QIRISITIU Y 27 3 4 5 description and the contents which contains the actual implementation of the component Within DSS view refers to the window displaying a sheet This term is most frequently used to refer to a second sheet window Every displayed sheet is also a view but a sheet can have several views The title bar will show the view number if there is more than one view of a sheet open In the active window the area excluding the window decoratio
19. from the Design Manager or a shell The Design Manager is a concurrent design environment that is comprised of both a graphical interface and a set of management facilities that help you to create and manage your schematic PC board and IC layout designs IC Station tools use the Falcon Framework which provides the Common User Interface CUI for all Mentor Graphics tools supports multiple editing windows and manages your layout s database ICextract The parasitic extraction tool part of IC Station and ICverify ICgraph The IC layout editor environment part of IC Station ICcompact ICcompact is the IC Station automated layout tool that lets you to perform both automatic and interactive minimization of the area of your completed layout Icon A small graphic representation of an object For example you can minimize a window to clear a cluttered workspace and you can restore a window return it to its original appearance as needed Iconify See Minimize 1 2 Mentor Graphics Glossary 1 J KILIMN OP QIRISITIU Y 27 ICplan ICplan is the IC Station tool that lets you generate and edit hierarchical floorplans ICrules The Design Rule Checker part of IC Station and ICverify ICrules Continuous DRC ICrules Continuous DRC automatically checks your layout against all of the RuleCheck statements that are referred to in the continuous RuleCheck group See also Design Rule Checking
20. CheckPlot Print Server Checkpointing Child Choice Stepper Class Click Client Area Client Border Client Process Client Server Mode Clipboard Clocking Schemes Clone Close Clustering Code Page Collision Detect Command Command Argument Command File Command Line Command Registration Commercial Component Library Common User Interface Compaction Compiled Rules Complete Transition Path Component Component Interface J KILIMN OP QIRISITIU Y 27 Component Interface Browser Conversion Component Modeling Converter Component Node Copy Component Sample Correct By Construction Component Symbol Correspondence Composite State Count Compound Search Coupled Simulator Compound Site Coupling Capacitance Computer Graphics Metafile Courier Concurrent Design CPI Concurrent Events CPL Condition Cross probing Config Crossover Fringe Capacitance Configuration Crossover Overlap Capacitance Configuration Entry Crossprobe Table Configuration Object CUI Configuration Window Current View Connectable Element Cursor Connection Resistance Curve fitting Connectivity Editing Custom Clock Connectivity Related Polygon Operation Connectivity Validation Connector Container Containment Hierarchy Contents Mode Continuum QuickHDL Context Diagram Control Architect Control Flow Control Key Sequence Control Panel Control System Control Transform C 2 Mentor Graphics Glossary B 1
21. Design Architect The Design Manager represents tools using icons See also Toolbox and Tool Viewpoint Tool Invocation Tool invocation is the process of opening a tool In the Design Manager you can invoke tools in the navigator by selecting and opening a design object using the navigator popup menu item Open gt and in the tools window by double clicking a tool icon See also Tool and Tool Viewpoint Tool Registration Encapsulation is performed by the optional Registrar tool See also Encapsulation T 6 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Tool Viewpoint A tool viewpoint is a special design object that provides the Design Manager interface to a design tool A tool viewpoint defines the manner in which a design tool invokes and terminates from the Design Manager You can create multiple tool viewpoints to represent the same tool in the Design Manager with each invoking the tool in a different way See also Tool Toolbox A toolbox is a directory that contains tool viewpoints See also Tool Viewpoint Toolbox Search Path The toolbox search path is a group of pathnames that specify the order in which the Design Manager searches toolboxes when populating the tools window Given two tool viewpoints with the same name but in different toolboxes the first tool viewpoint found is the one displayed See also Toolbox and Tool Viewpoint Toolkit A logical collection of fu
22. Notepad Window NC NCS NCS Interface Nearbody Capacitance Net Net Parameter Net Segment Net comp Net comp count Net comp place Netlist Netlister Netlistfile Network Network Computing System Network File System Network Information System Network Server NFS NIS NIS Map Node Nodelocked License Nominal Delay Non functional Model Non proportional Font Not dot Notepad Notepad Document Mentor Graphics Glossary B 1 N 1 J KILIMN OP QIRISITIU Y 27 Name Server A host that runs named Named The UNIX daemon that responds to and resolves name queries NC No connect pin Pins shown on a physical symbol that are not connected to power or ground and are not used as part of the functional component are no connect pins No connect pins usually do not appear on the logical symbol NCS See Network Computing System NCS Interface The link between a client and a server process The BOLD Administrator manages two type of NCS interfaces DDS and IP interfaces The type of interface a client process uses depends on the availability of interfaces and whether the client has a preference for a certain type Nearbody Capacitance Near body capacitance is the capacitance between two parallel paths on the same original layer Net This property specifies the connectivity of signal nets by assigning unique names to paths pins ports busses overflows and cells of type via A sig
23. One member of a vector Each vector element can be referred to by a numerical subscript Velocity A vector quantity defined for rotational systems Velocity is the measure of the speed of rotation of a rotating body In the rotational electromechanical analogy for behavioral System Modeling Blocks voltage represents velocity The units are such that one volt represents one radian per second rad s Verification The procedure of checking an AccuParts model in AccuSim II to compare the simulated model with databook specifications or measured data The result of verification is a component datasheet Verify Two Servers To examine the contents of two network servers and report whether they are identical Verilog An alternative hardware description language compliant with the proposed IEEE standard 1364 1995 that can be used for the design modeling and simulation of electronic circuits Verilog is a registered trademark of Cadence Design Systems Inc See also HDL and VHDL Verilog Module Describes the boundaries and content of a Verilog logic block in structural dataflow and behavioral constructs V 2 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Verilog Specification A view of a system or transform which defines the behavior of this system or transform using behavioral Verilog source Versatec Plotter Any number of plotting devices manufactured by Versatec Inc Versatec supplie
24. SLD Names Handshake A protocol or process by which devices synchronously communicate to each other Hard Link A hard link is a link that points directly to an object Hard links cannot span file systems and cannot refer to directories See also Hard Pathname Soft Pathname and Symbolic Link Hard Pathname A hard pathname is a pathname that beings with the slash character A hard pathname might or might not be interoperable The network and file system environment within which the hard pathname exists determines whether it is interoperable See also Soft Pathname Hardcopy Screen image files or printer output produced from the HP A pollo shell using the Mentor Graphics hardcopy command HDL HDL stands for Hardware Description Language It is used in this manual as a generic term for the VHDL or Verilog languages HDL Architect A workstation with the Mentor Graphics System Architect application plus QuickHDL compilation and simulator applications which is used for top down electronic system design using VHDL or Verilog See also System Architect HDL Specification A view of a system or transform which defines the behavior of this system or transform using behavioral VHDL or Verilog source See also Verilog Specification and VHDL Specification H 2 Mentor Graphics Glossary B 1 J KILIMN OP 5 Y 7 Text that repeats at the top of each page of multi
25. See also System Architect and HDL Architect Systems Engineering A process that consists of describing behavior selecting a component model of the architecture and verifying that the required behavior is traceable from requirements and feasible within the constraints upon time cost and component capabilities System Instance A component node on a Data Flow Diagram that instantiates a system It can represent a control or data system A system can be instantiated on more than one Data Flow Diagram in the same or different design hierarchies See System Component Control System and Data System System Manager The person s responsible for system maintenance and administration at your site Typical duties of the system manager include installing and configuring the operating system installing and configuring Mentor Graphics software creating and deleting user accounts and maintaining user account databases adding or removing network systems and peripherals configuring and managing network mail managing network files systems and disk space maintaining network security and setting up and maintaining the printers and the print environment System Model A System Model defines the required behavior of a system See also Implementation Model S 20 Mentor Graphics Glossary B 1 QIRISITIU Y 7 System Requirements The required performance features and characteristics of a complex sy
26. a cell that has not yet been placed routed and compacted Flow A signal represented as a connector on a Context Diagram or Data Flow Diagram A flow represents a transfer of data or control signals between mostly transform instances Strictly speaking a flow is a single connector and a network of connected flows with the same name is called a flow net Flow Net A set of flows or signals that have the same name and are on the same diagram and any connected flows on a parent or child diagram A flow net can be either a signal flow net that contains only signal flows or a formal flow net that contains only formal flows A flow net has an associated type name This is the name of a type definition which should be defined in one of the Type Definition Packages in the type definition package list of the diagram containing the flow net The flows in a flow net cannot be a mixture of formal and signal flows They must also be either all control flows or all data flows Font The display representation of a complete set of alphanumeric characters in a single point size and face Times Roman is the font used for most newspaper text Helvetica is the font used for newspaper headlines Fonts are usually stored as bitmaps but can also be represented as stroke tables Font Family A set of fonts that contains different sizes and faces but whose members are all of the same visual character style Times and Helvetica are examples of font families F
27. and Encapsulation Design Root In the Mentor Graphics environment the top level of a design hierarchy Generally but not always applications are invoked upon the design root Design Traverser Mentor Graphics pre V8 application used to examine and modify the design database Design Unit VHDL A design unit is a portion of the hardware description model that can be contained and compiled in a separate design file The following are design units entity declarations architecture bodies package declarations and package bodies The ability to store design units in separate files allows you to modularize a design description by compiling each entity or package declaration separate from the corresponding body This ability is also useful so packages can be shared by multiple entities Design Viewpoint A design viewpoint is a special design object that contains design configuration rules for evaluating the source object along with references to back annotation objects It is not a copy of the component it is a set of rules used by downstream applications to evaluate the component and a container in which related design information is stored Similar to the pre V8 erel file created by EXPAND The design viewpoint is a design object implemented as a directory that specifies how a design is to be composed The design viewpoint specifies the versions to use for the various parts of the design and values of design parameters and build
28. architecture body files are stored separately from VHDL entity declarations VHDL Architecture Station A workstation with the Mentor Graphics System Architect System 1076 and QuickVHDL applications which is used for top down electronic system design See also System Design Station VHDL Entity Declaration Defines the interface between a design entity and its external environment An entity declaration contains definitions of inputs to and outputs from the design V 4 Mentor Graphics Glossary B 1 J KILIMN OP 5 Y 7 entity Within System Architect an entity declaration is stored separately from its associated VHDL architecture body VHDL Model A VHDL model describes the structural and behavioral characteristics of a circuit VHDL Specification A view of a system or transform that defines the behavior of this system or transform using behavioral VHDL source VHSIC Very High Speed Integrated Circuit a department of Defense program that was intended to speed up the insertion of new IC technology into government weapons programs Via Instance A via created as a cell is referred to as a via instance Vias by definition connect two layers with a shape on each layer You can implement vias in IC Station as via objects or via instances You use create cell to create via instances and you can use add via to create via objects and via instances Via Object Vias by definition
29. being activated on a clock edge See also Clocking Schemes ATR See Apollo Token Ring Network Attribute 1 Any characteristic of an item or associated descriptor For example scale priority and orientation can all be considered attributes of one print job 2 EDIF terminology for a set of commonly used properties A 6 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Attribute File An attribute file is a special file contained within a design object that is used to store all attribute information about the design object The information includes object type identity user defined properties and design object references An attribute file is identified by its attr suffix See also Metadata Authorized Area A source area created during the initial installation of SR10 used to provide source software for subsequent software installations on an SR10 4 network Auto Scale Instructs the print server to print at true scale that is print the picture at actual size unless it is larger than the page then fill one page Auto deletion Selected text is automatically deleted when new text is entered AutoLogic AutoLogic is a design optimization tool that produces technology specific netlists from generic netlists such as those produced by AutoLogic VHDL AutoLogic optimizes these netlists at the gate level so that they meet your requirements in terms of area and performance AutoL
30. between two different paths on the conduction layers Coupling capacitance is comprised of crossover overlap crossover fringe and near body capacitances Courier A monospaced font family that can be printed on a laser or CheckPlot printer CPI See Characters Per Inch CPL See Characters Per Line Cross probing Cross probing is a method of automatically highlighting a portion of either a cell layout or schematic that corresponds to a selected portion of either a schematic or cell layout respectively See also Correspondence Crossprobe Table and ECO Crossover Fringe Capacitance Crossover fringe capacitance is proportional to the perimeter of the of the path segments that overlap Crossover Overlap Capacitance Crossover overlap capacitance is proportional to the area of overlap between paths Mentor Graphics Glossary B 1 C 19 J KILIMN OP 5 Y 7 Crossprobe Table A crossprobe table is a persistent record associated with a design viewpoint that contains correspondence information The Common User Interface uses correspondence information for highlighting and ICgraph s ECO functionality uses it to determine when changes have been made to a logic source that have not been applied to a layout See also Correspondence CUI See Common User Interface Current View The model of a SDS component that is used in hierarchical operations and by default in open commands a
31. can be started on that workstation BOLD daemon processes run in the background Bold Italic A heavier weight of characters that slant to the right Boldface See Bold Bookcase A named subset of documents in an online library Typically the documents in a bookcase are related to one another For example the INFORM bookcase named BOLD Online Information contains all of the documents that describe the BOLD tools Boolean Search See Compound Search Boot Host A computer system that holds the operating system files necessary to start boot the X terminal Mentor Graphics Glossary B 1 B 5 J KILIMN OP QIRISITIU Y 7 BORDER Governs the visibility of the HP Apollo Display Manager window border and banner Boundary Model An element inserted in the simulator data structures that communicates analog to digital or digital to analog data between the QuickSim II and AccuSim II kernels Boundary Point An element on a Data Flow Diagram that represents a connection to the parent Data Flow Diagram or for a Top Level Data Flow Diagram the Context Diagram Flows connected to boundary points are inputs or outputs to the diagram Bound in Server An External Rendering Interface ERI server that is part of a specific application This type of ERI server is transparent to the user Branch A branch of a net is a section of the net that logically connects two device ports or pins Breadboarding
32. capacitance between a conduction layer and the base layer Intrinsic capacitance is comprised of both body and fringe capacitance Invol An Domain OS program that initializes a disk or storage module The invol program resides in each of the sau directories and also in the directory IP See Internet Protocol IP address A unique string of four numbers separated by periods that identifies each host in a network IP addresses provide the information necessary to locate the correct network and host for a given transmission IP addresses are also called internet addresses Italic A face that slants to the right The letterforms can also be redrawn to resemble script IXO See Input Output 8 Mentor Graphics Glossary 1 J KL MN OP 5 Y Z Glossary J JAF Job Attribute File A file containing information about a specific Mentor Graphics print job including all the printing options set in the setup printer dialog box an options box or a call to an internal state function set When you call a print function the print daemon creates a JAF for that print job JCF See Job Configuration File JFET The acronym for Junction Field Effect Transistor Job Configuration File A file that overrides configuration directives in the Mentor Graphics startup configuration SCF on a job by job basis The JCF is written into the JAF at spool time Junction A
33. case of the integrated mixed signal simulator the QuickSim II kernel together with the AccuSim II kernel provide the back end for mixed signal simulations whereas the AccuSim II kernel alone provides the back end for analog only simulations The term back end presupposes there is a front end which refers to the SimView user interface that provides a graphical environment in which the user controls the setup running and viewing of electronic design data Together the back end in the form of the simulation B 2 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 kernels and the front end in the form of the graphical user interface constitute mixed signal simulator Backup Media Magnetic media tape or disk used to contain data backed up from workstations Basic Container A basic container is a container design object that has only one fileset member a directory See also Container Containment Hierarchy and Design Object BDF Bitmap Distribution Format the standard portable source format for the X Window System fonts Behavioral Language Modeling Behavioral language modeling is a technique that you can use to create your own component models Behavioral language models or BLMs are C programs that you write to simulate the function of complex devices Well written BLMs simulate faster than other models and are very accurate Behavioral level Model A simulation model whose
34. characters of the possible 256 characters definable in a byte of information The character set also defines the upper 128 characters that are active in a printer ASCII Backannotation File The ASCII backannotation file contains individual backannotations comments and special instructions called directives that the Design Viewpoint Editor can use to import the file Mentor Graphics Glossary B 1 A 5 J KILIMN OP QIRISITIU Y 27 ASCII File A file composed of ASCII characters stored in user readable form that can be edited with a text editor ASIC Application Specific Integrated Circuit Asim model Property A property conveying the model name of the component model This model name points into the ASCII text file modelfile that contains analog component descriptions in AccuSim II syntax For example the value of the Asim model property for a NPN BJT with the part number 2n2222 is 2n2222 Aspect Aspect is the abstraction of a cell that is visible in a specific context There are two sets of data associated with a cell internal data and external External data objects are the interface and abstraction of the cell Internal data objects are the implementation of a cell and are visible when the cell is peeked Aspect Ratio The ratio of page width to page height Asynchronous An asynchronous VHDL process is activated as soon as any of its inputs have any activity on them rather than only
35. deleted in the current version See also Object Property Property Reference and Version Property Reference State A state 1s a condition that applies to references and configuration entries There are three possible states that a reference or configuration entry can possess Mentor Graphics Glossary B 1 R 3 J KILIMN OP 5 Y 27 Current Current references and configuration entries always point to the current version of the design object that they reference As the design object evolves the reference or configuration entry remains set to that current version Fixed Fixed references and configuration entries always point to the version of the design object to which they were originally set As the design object evolves the reference or configuration entry remains set to the same version e Read only applies to references only A read only reference points to the current version of the target design object but the object cannot be edited when accessed through this reference regardless of the access permissions of the referenced object See also Configuration Entry and Reference Reference Voltage A measure defining the full scale analog input or output voltage Reference voltage defines the range zero volts to VREF volts over which the Analog to Digital and Digital to Analog Converters perform conversions Reference Window The reference window is a bounded
36. down Design It includes graphical data flow and state machine editors HDL generation animation prototyping and process management tools It is closely integrated with HDL compilation and simulation tools and linked directly to downstream processes such as synthesis See also Control Architect and HDL Architect System Clipboard A temporary storage area accessible to all applications running under a user s login System Component The definition of a system It is contained within a library and normally contains a number of Transform Components Logic Components and Type Definition Package Components The System Component contains a Context Diagram and can contain a number of Data Flow Diagram State Machine and VHDL Specification views that represent its behavior See System Instance Control System and Data System System Design The act of designing a complex system that entails many components and technologies Mentor Graphics Glossary B 1 S 19 J KILIMN OP QIRISITIU Y 27 SDS See System Design Series System Design Series A series of products including System Architect System Design Station and VHDL Architecture Station that support top down electronic system design See also Top down Design System Design Station A workstation with the Mentor Graphics System Architect System 1076 Design Architect and QuickSim II applications which is used for top down electronic system design
37. of a component Two types of models exist functional models and non functional models Functional models which describe the implementation of a component include builtin models schematic models QuickParts QuickPart Table models schematic models BLMs VHDL models and HML models Non functional models which describe other aspects of a component such as graphical or timing data include the symbol model technology file and library data technology files See also Simulation Model Model Configuration Any of several topology variants for a given template Mentor Graphics uses these variants either to model different subtypes within a given component classification or to provide multiple levels of accuracy for one component class or subclass Model Datasheet See Datasheet Model Evaluation This process builds the final net connectivity across the model This process includes evaluating conditional and repetitive logic frames expressions and property values and expanding wide nets and wide pins and connecting them as needed See also Design Evaluation Model Labels A model label is a user defined text string associated with a model A model can have multiple labels and labels need not be unique These labels are used in combinations to fully define the implementation of a component in a variety of ways Mentor Graphics Glossary B 1 M 9 QIRISITIU Y 27 Model Name The uni
38. of commands and comments that appear in the transcript window of a Mentor Graphics application You can save transcripts for later reference print out or replay To replay a transcript you copy the transcript into a file and use dofile Transcript Pad An HP Apollo workstation operating system pad containing an application s command history Transcript Window A window that records your interaction with the application Transduction The process of eliminating redundant logic and of sharing equivalent logic within the circuit Transfer Function The relationship between the output and input quantities It is a ratio of Laplace transforms in the frequency domain or it is equations mathematically relating the output to the input in the time domain Transform A part of a system that performs a specific function or set of functions A transform has a set of input and output flows Transform is a general term for more specific uses see Control Transform and Data Transform Transform Component The definition of a control or data transform It is contained within a System Component and can contain a number of views that represent its behavior These views can be Data Flow Diagrams State Machines and VHDL Specifications See Transform Instance Transform Instance A component node on a Data Flow Diagram that represents an instantiated control or data transform The decomposition of a system into a hierarchy of transforms is defined by
39. of placing information about an instance net or pin into the design database using the Symbol Editor or the Schematic Editor A property is an attribute attached to an object in the form of a name value pair Simulators and layout applications refer to the properties for information about the design Properties define the physical attributes of an electronic component and are also used to configure or identify information associated with a design object References have properties These properties can be back annotated by DVE DFI SimUI and others A property attached to a graphical symbol conveys information about that symbol Each property has a name and a value For example the Inst property is attached to the body of a symbol Inst is the name a possible value can be or null string In IC a property which 15 a logical object is a mechanism that you use to convey nongraphical information to ICgraph and other tools Properties are associated with another specific physical or logical object in the cell Properties are persistent at the cell level Each property consists of a name value and owner See also Object Property Reference Property and Version Property Property Name The property name is either a reserved word or an arbitrary but unique name that you pick Property Owner The property owner is another object in the design such as a shape pin or port Mentor Graphics Glossary B 1 P 15
40. part of a window that holds push buttons and other gadgets 2 A DSS sheet that contains action buttons designed to control other sheets 3 Within the context of System Architect a graphical interface containing action buttons and gadgets that is used by the prototyping tool to exercise a State Machine or a VHDL Model of a system or transform Control System A self contained system with defined inputs and outputs that describes control behavior Typically used for sequential logic See also System Instance and System Symbol Control Transform A subsystem that represents a control block in a Data Flow Diagram There is no semantic difference between a control and data transform but a control transform is typically used to describe control behavior and is typically defined by a child State Machine view See also Transform Instance and Transform Component Conversion The action of taking old data designs or userware and creating equivalent new data in a new format Converter Any tool used to convert data from an old format into a new format Mentor Graphics Glossary B 1 C 17 J KILIMN OP QIRISITIU Y 7 1 store Notepad text from the text window in a clipboard leaving the original text intact 2 To duplicate selected text in another area of the Notepad text Correct By Construction The Correct By Construction CBC mode restricts editing to prevent changes to connecti
41. points formal points splices or junctions are connectable In a State Transition Diagram states links and transition nodes are connectable although a link can only be a destination Connection Resistance Connection resistance 1s the resistance of contacts and vias which connect different conduction layers C 14 Mentor Graphics Glossary B 1 J KILIMN OP 5 Y 27 Connectivity Editing The Connectivity Editing CE mode maintains connectivity data as edits occur but doesn t prevent any errors in connectivity or physical design rules You get a warning when connectivity is being changed by an edit but the edit does occur The CE mode is typically used in situations where you want to keep track of connectivity but need the freedom to modify it See also Geometry Editing and Correct By Construction Connectivity Related Polygon Operation Connectivity related polygon operations either select polygons based on both connectivity information and polygon dimensional attributes or they associate connectivity information with polygons Connectivity Validation The cell s Connectivity Database must be present and current before the IC Environment can promote the cell to the CE mode You must first execute Connectivity Extraction in the GE mode before promoting the cell if you have made an edit to the design after you have extracted connectivity Connector An element in a Context Diagram Dat
42. same by assigning them a swap set code You specify swap sets by adding the name of the logical swap set property and the rules to the port Swappable ports share the same swap swap code 0 Swap set This property identifies a pin as belonging to a set of swappable pins Mentor Graphics Glossary B 1 S 17 QIRISITIU Y 27 Switch An optional command argument that is preceded by a dash and is separated from the command and other command arguments by a space character Symbol A non functional design object that contains a graphical representation of a component A symbol consists of a graphical symbol body symbol pins symbol pin properties and symbol body properties Symbols are created in the Symbol Editor in Design Architect A design object can represent anything from a simple logical function to a full blown integrated circuit Symbol Model A symbol model graphically represents the component Symbolic Link A symbolic link is a special type of object that points from one place in the naming tree to another and contains the name of the file to which it is linked When a link name is used as a pathname or as part of a pathname the link text is traversed in place of the link name the link resolves to the destination specified by the link text Symbolic links can span file systems and cannot refer to directories See also Hard Link Hard Pathname and Soft Pathname Synch
43. simulatable model of that component The three types of model view are the Data Flow Diagram the State Machine and the VHDL Specification Monospace Font A font family whose characters all have uniform and equal spacing Each monospace character whether it is narrow such as an i or wide such as an m occupies the same space width The characters on a typewriter are a familiar example of a monospace font Moore State Machine A State Machine that is defined as a sequential network whose output actions is a function of the present state only The state graph for a Moore State Machine has the output associated with the state Mentor Graphics Glossary B 1 M 11 QIRISITIU Y 7 MOSFET The acronym for metal oxide semiconductor field effect transistor Motif The name of the guidelines defined by the Open Software Foundation OSF for user interfaces of software applications All applications have a Common User Interface developed from these guidelines Motif Window Manager A window manager based on OSF Motif Mount 1 The process of accessing a directory from a disk attached to the machine making the mount request or remote disk on a network 2 The command used to mount a filesystem Mountd The mount daemon Mouse A device for moving the insertion cursor or mouse pointer on the display A typical mouse has two or three buttons on top of a small box that can be moved
44. specific kernel For Continuum two partitions exist one for the QuickSim II kernel and one for the AccuSim II kernel Partitioning The process by which Schematic Generator divides a large schematic into a number of smaller portions of functionality sheets In the Continuum environment the process the simulator goes through to assign components to the analog and digital partitions Paste To insert data into an area Pasting is commonly used in reference to text or graphic files where a block of text or a graphic object is cut from one area and pasted into another area Pathname A series of names separated by slashes that constitute the fully qualified name of the path from one point in the file system hierarchy to a particular file Pathnames begin with the starting point s name and include every directory name between the starting point and the destination object A pathname ends with the destination object s name See also Absolute Pathname and Relative Pathname Path A path has a centerline sometimes called a model line a width and an endtype Most edit functions operate on the centerline of a path Mentor Graphics Glossary B 1 P 5 J KILIMN OP QIRISITIU Y 27 Portable Compiled Font new in X11R5 X Window System font that is in a format that any X11R5 X server can interpret directly for display purposes PDL See Page Description Language Peek Peeking let
45. the MODEL statement for an AccuSim II primitive Display 1 A physical device such as a CRT cathode ray tube that graphically displays information from the computer that shows images 2 The physical representation of data as on a screen 3 The process of creating a visual representation of graphic data on an output device 4 A UNIX environment variable that specifies the name of the workstation where display events are received For example setenv DISPLAY 0 0 Display Manager The workstation program that executes commands that start and stop display processes as well as commands that open close move or modify windows and pads OpenWindows and HP VUE are examples of display managers Display Manager Window A window created by the workstation window system HP Sun Mentor Graphics and other applications run in a display manager window Dissolve A hierarchical control in the optimization process that tells AutoLogic to dissolve the boundaries of a hierarchical block That block and each block beneath it loses its identity as a block and becomes a part of the hierarchical block immediately above it Mentor Graphics Glossary B 1 D 15 J KILIMN OP QIRISITIU Y 7 Distributed Parasitic Extraction Distributed parasitic extraction calculates distributed resistance and capacitance RC trees which are comprised of both parasitic resistance and capacitance effec
46. the type location connectivity and properties of the device instance Device Recognition Template A device recognition template is a set of device definitions in a DEVICE statement that describes how a collection of polygons can be recognized as an instance of that device DFA Design File Analyzer A set of pre V8 commands available in EXPAND and all Mentor Graphics simulators DFA commands were used to examine a design file DFA has been replaced by Design Viewing and Analysis Support DFI Design File Interface A read back annotation write procedural interface to the Mentor Graphics design through a design viewpoint Mentor Graphics Glossary B 1 D 11 J KILIMN OP 5 Y 27 Dialog Box A box that appears after you invoke a command or function for which you must provide additional information required by the application See also Options Dialog Box and Prompt Bar Dialog Box Control A graphic control that elicits simulation of an action such as pushing a button or moving a slider This small interactive area displays a value or solicits input from the user See also Slider Dialog Box Indicator An ellipsis that follows a menu item Indicates that executing the menu item displays a dialog box Dialog Navigator The dialog navigator is a dialog box control that allows navigation to and selection of design objects The application that displays the dialog navigator can
47. their users and provides the ability to look up that information Network Server A network server is a BOLD server that maintains a central database of the contents of each library that has been registered with it When a client process submits a request to the network server to access a particular document the network server then locates an available copy of that document and establishes the connection between the client process and the library server It also keeps track of all activity between client processes and documents NFS See Network File System NIS See Network Information System NIS Map An NIS file that holds information of a particular type For example a map file can hold the host names of all systems on a network A map file can also list file systems for mounting N 4 Mentor Graphics Glossary B 1 IJ 5 IZ Node 1 A line connecting the pins of two or more components or elements Corresponds to a net vertex in the Schematic Editor See also Workstation 2 A connectable item on a Context Diagram Data Flow Diagram or State Transition Diagram Can be an external junction or the system symbol on a Context Diagram or a component node junction boundary point or formal point on a Data Flow Diagram In a State Machine it can be a state or transition node Nodelocked License Nodelocked licenses authorize a specific works
48. window and view the destination of the link in the original window Hypersource The source of a hypertext link A hypersource is a defined location of an online document If BOLD Browser users activate a hypersource they are taken to its associated hyperdestination Hypertext A method of linking related textual information that is non linear This allows viewing the information in a cognitive rather than a printed sequence Hypertext Link A method of linking related textual information in online documents Hypertext links are used to travel to another location in the same document or in another document Hypertext links are shown as hyperbuttons colored or boxed text in H 6 Mentor Graphics Glossary B 1 5 Y 27 the BOLD Browser Clicking the left mouse button on a hypertext link displays related information on a topic Hysteresis An electrical concept for analog memory Hysteresis is characterized by changes in the output occurring at two different boundary points for the input depending on whether the input is increasing or decreasing Modeling blocks using hysteresis equate the high input boundary with threshold value added to the hysteresis value divided by two The low input boundary is the threshold value minus the hysteresis value divided by two Mentor Graphics Glossary B 1 H 7 QIRISITIU Y 27 H 8
49. 7 Config A Domain OS program that interactively uses the release indexes for products in an authorized area to create a file that controls the software configuration when that software is installed with the Domain OS install tool Configuration A configuration is a collection of design objects See also Design Data Configuration Management Configuration Entry A configuration entry is a pointer to a single version of a design object the design object is part of a configuration See also Primary Entry Secondary Entry and Reference State Configuration Object A configuration object is a special type of design object that specifies how a configuration is built A configuration object is versioned it references primary and secondary design objects and it records build rules for each primary design object See also Configuration and Design Data Configuration Management Configuration Window A configuration window is a bounded area bordered by a rectangular box within which complex groupings of related design objects are collected and operated on asasingle unit See also Configuration Configuration Entry and Design Data Configuration Management Connectable Element An element in a Context Diagram Data Flow Diagram or State Transition Diagram that can be the origin or destination of a connector In a Context Diagram only the system symbol externals and junctions are connectable In a Data Flow Diagram transform instances boundary
50. A window DSS displays when asked to open a file Usually synonymous with view but refers to the entire file not just the visible part S 8 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Sheet Resistance Sheet resistance is the resistance of a conduction layer from one boundary to another typically specified as ohms per square Sheet based Model A simulation model whose behavior is defined by an underlying schematic sheet Sheet based Part A simulation model whose behavior is defined by an underlying schematic sheet Shell A command line interpreter program used to invoke utility programs Shells interface with the operating system The Bourne shell is the default shell for Mentor Graphics applications The common UNIX shells are the Bourne shell C shell and Korn shell Shell Script A program written in syntax recognized and executed by the specified shell Signal 1 A signal path or net 2 The activity occurring on a net Signal Path Signal paths are used to transmit electrical signals between signal pins The centerline of a signal path should be on the user grid Signature Synthesis The process of making cost based substitutions of technology specific primitives to improve the performance or reduce the size of the circuit Simple Clock A single one phased clock Simple Connectivity Model A model which is similar to a netlist but not in ASCII readable form co
51. Absolute Time A specific point in time such as 15 26 45 on 4 12 92 See also Relative Time Access Control List A list of users who have access to objects in the network and specific rights that each user has for accessing these objects In the Aegis environment ACLs allow for extended lists of users outside the PGO UNIX limit ACLs are known as permissions in the UNIX environment AccuParts Library The Mentor Graphics library of commercially available packaged analog component models AccuParts is a read only database of AccuSim II simulation models AccuSim ll Primitive A set of model equations generic model templates for components such as BJTs JFETs diodes magnetic cores and MOSFETs that are built into AccuSim For these components the AccuParts model consists only of a set of model parameters matching the template to a particular component s electrical characteristics AccuSim Il Simulator The Mentor Graphics interactive analog circuit simulator that lets you verify the functionality and performance of those designs you create with Design Architect ACL See Access Control List Acquiring A License Acquiring a license means that you have exclusive use of that license until you release it by exiting the application or you execute the release license function A 2 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Action List The operations performed when a transit
52. Auxiliary operations consist of many types of layer operations Many auxiliary operations do not use secondary keywords to modify their functionality instead each variation is represented by its own unique layer operation keyword Auxiliary Rules File Operation Generates derived polygon layers or derived edge layers They generate data that usually supports other operations A 8 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Glossary B The following terms are described in this section Backannotation Backannotation Object Back End Background Processing Backup Backup Media Basic Container BDF Behavioral Language Modeling Behavioral level Model Bi directional Bit Bitmap BJ 130 and BJ 130e Plotter BJT Blackbox BLM Block dir Blockage Blocking Dialog Box Body Capacitance Bold BOLD BOLD Administrator BOLD Browser BOLD Daemon Bold Italic Boldface Bookcase Boolean Search Boot Host Mentor Graphics Glossary B 1 BORDER Boundary Model Boundary Point Bound in Server Branch Breadboarding Bridge Broker Btxt Bubble Jet Printing Build Rules Builtin Bundle Bundling Bus Button Button Binding B 1 J KILIMN OP 5 Y 27 Backannotation Creating or editing properties associated with either instances nets or pins from a downstream tool such as a simulator Back annotations include su
53. B is equal to VREF divided by 2N where VREF is the reference voltage N is the number of bits in the digital word 151 Large Scale Integration Lumped Parasitic Extraction Lumped parasitic extraction calculates only parasitic lumped capacitance and lumped resistance values each entire net is assigned both a single capacitance and resistance value that is the sum of the various types of parasitic capacitance and resistance respectively LVS Layout Versus Schematic ICtrace LVS compares the connectivity of a cell or cell hierarchy with a source circuit or schematic Mentor Graphics Glossary B 1 1 7 QIRISITIU Y 27 L 8 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 7 Glossary M The following terms are described in this section Macro Macromodel Macromodel Model Parameter Macromodel Template Magnification Factor Manual Connectivity Extraction Mapping Margin Mask Connectivity Extraction Mask ICtrace Layout Versus Schematic Comparison Mask Verification Master Tree Maximize Maximize Button Mealy State Machine Memory Caching Mentor Graphics Tree Menu Menu Accelerator Key Menu Bar Menu Item Menu Mouse Button Menu Path Menu driven Application Message Area Message Box Metadata Methodological Operation Metric MGC Working Directory Mentor Graphics Glossary B 1 MGC COMPONENT STATUS
54. Glossary B 1 J KILIMN OP 5 Y 27 Dont touch A control placed on a hierarchical block that tells AutoLogic to calculate the timing through the block but not to optimize it Dots Per Inch The resolution of any pixel oriented device Dots per inch often expresses the resolution of both the display device and the printer Displays are typically 75 to 100 dpi while printers are typically 180 to 400 dpi Double clicking Clicking a mouse button twice in rapid succession without moving the pointer Downloading The process of filling the printer character generator RAM with a user supplied font The printer then uses the supplied font in place of the built in font DPI See Dots Per Inch Draft Mode A quality of print on the page that is not suitable for presentation Usually this mode is faster than letter quality Drag To press and hold down a mouse button or keyboard key while you move the mouse and the pointer on the display Typically you drag the mouse pointer when selecting items or when moving or resizing a window DRC See Design Rule Checking Drive The relationship between output delay and capacitance load DSC Design Syntax Checker checks a schematic design with respect to the configuration rules of a design viewpoint DSC is a subset of the Design Viewing and Analysis Support DV AS functionality Mentor Graphics Glossary B 1 D 17
55. Instantiate The act of placing a component instance on a schematic sheet Instpar Property A property specifying instance specific information on analog device attributes such as resistor value or device size length and width of a MOSFET 1 6 Mentor Graphics Glossary 1 jJ KILIMN OP 5 Y 27 Integrated Design Management The Integrated Design Management IDM toolkit provides a limited set of simple easy to use design management commands from within EDA applications These commands provide the ability to copy move delete and change the references of your design objects as well as to view the design hierarchy of your data Integrated Simulator A simulator that integrates or couples two simulation kernels such as QuickSim II and AccuSim II and includes a graphical user interface environment such as SimView The kernels act as a combined back end of the simulator while SimView acts as the front end of the simulator Interactive Denotes two way communication between a computer system and its operator Interface An interface is a set of pins representing a component See also Component Interface and NCS Interface Internal Aspect In Icgraph there are two sets of data associated with a cell internal aspect and external aspect Internal aspect objects are the implementation of a cell and are visible when the cell is peeked Internal State Function A system defined and
56. Measurement Operation Extent Box Edge Topological Operation Extent Generation Operation Edge based Polygon Selection External Operation External Aspect EDIF Extraction Edit Cursor Edit Mode Electronic Design Data Model Electronic Design Data Model Design Viewpoint Element Element Name Element Property Encapsulation Engineering Change Order Entry Box Entry Node Environment Variable EOC ERI ERI Server Error Manager Error directed Operation Estimation Ethernet Evaluation Mentor Graphics Glossary B 1 E 1 QIRISITIU Y 7 1 The acronym for ICgraph functionality that you use to report changes made to a logic source and implement corrections to the layout 2 Anacronym for Engineering Change Order See also Crossprobe Table EDDM See Electronic Design Data Model EDDM Netlist See Simple Connectivity Model Edge A transition from zero to one volts or one to zero volts A rising edge occurs during the zero to one transition a falling edge occurs during the one to zero transition Edge Expansion Operation Edge expansion operations generate rectangles on a derived polygon layer from edges on either an original polygon a derived polygon or a derived edge layer Edge Measurement Operation Edge measurement operations select edges from the input layer that meet certain length or angle requirements in order to generate a derived edge layer
57. Mentor Graphics Glossary Software Release B 1 Part No 059337 Click here to display Section A GIMiphice Copyright 1991 1996 Mentor Graphics Corporation All rights reserved Confidential May be photocopied by licensed customers of Mentor Graphics for internal business purposes only Table of Contents TABLE OF CONTENTS About This Manual Glossary A Glossary B BI Glossary C 1 1 1 C Glossary D Glossary ELE Glossary F J 1 1 1 11 1 1 1 F Glossary G G I Glossary HW Glossary T_T Glossary J S Glossary KK Glossary Li OL Glossary M Glossary NW NM Glossary O_O Glossary P Glossary Q 01 Glossary R SS SARA Glossary S 1 1 Sl Mentor Graphics Glossary B 1 ii Table of Contents TABLE OF CONTENTS continued Glossary T_T Glossary ULI 05 9 Glossary WW Id Glossary X Glossary Y Y I Glossary ZI Mentor Graphics Glossary B 1 iii Table of Contents TABLE OF CONTENTS continued Mentor Graphics Glossary B 1 About This Manual About This Manual The Mentor Graphics Glossary contains an alphabetic list of terms that are related to Mentor Graphics tools To display the first page of the Glossary entries for a particular letter click on that letter at the top of the page If a letter spans more than two pages that letter contains its own mini index on the first page of
58. Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 7 Glossary The following terms are described in this section ICblocks IC Centric IC Environment ICextract ICgraph ICcompact Icon Iconify ICplan ICrules ICrules Continuous DRC ICrules Design Rule Checker IC Session ICtrace ICverify ID ID Netlist IDEA Idea Station Implementation Model ImPRESS In place Inactive Window Include Statement Incremental Change Inetd INFORM Initialize Ink Jet Printing Mentor Graphics Glossary B 1 Input Arrival Input Arrival Time Input Output Insertion Cursor Insertion Point Inst Property Install Instance Instance by reference Instance in place Instantiate Instpar Property Integrated Simulator Integrated Design Management Interactive Interface Internal Aspect Internal State Function Internet Internet Protocol Internetwork Interoperable Pathname Intrinsic Capacitance Invol IP IP address Italic IXO 5 Y 27 I O See Input Output IC The acronym for Integrated Circuit ICblocks The standard cell blocks IC layout editor environment part of IC Station IC Centric IC Centric refers to the L Converter user with IC Station as the primary development environment IC Environment The IC Environment is a single IC development environment that you can invoke
59. Mentor Graphics Glossary B 1 S 15 J KILIMN OP QIRISITIU Y 27 Note that stopping a server is different than deleting a server Deleting server is necessary only after a system error has occurred that has terminated the server without telling associated servers that it is no longer functioning String A sequence of characters including spaces tabs numbers and punctuation characters in addition to alphabetic characters Stroke A predefined mouse pointer movement that is translated into commands or functions The display is divided into nine partitions and a number assigned to each area The sequence of partitions the mouse pointer passes through define a stroke The Stroke Drag middle mouse button executes strokes Stroke Weight See Weight Sub cell Subcells are cells that are instantiated in either the top level cell or in other subcells Sub cell Database Contains the cell layout connectivity and the LVS results database It might possibly contain a DRC Results Database if ICrules DRC was executed when the subcell was loaded as a top level cell You can edit the cell database only when the cell is in the active editing context in the IC Session Since a cell can be composed of a hierarchy of more primitive cells the IC Environment uses a template attribute file to maintain references to other cells The IC Environment stores the Layout Versus Schematic LVS results that you generate for
60. Phy pin This property specifies a name for a logical pin on both an ICgraph cell and its corresponding schematic symbol Physical Event Events generated by the graphic input devices Physical Page Number The number that represents the location of the page within the document Physical page numbers are consecutive numbers beginning with 0 For example the first page of a document has a physical page number of 0 the second page is 1 and the tenth page is 9 Physical Symbol The physical appearance or footprint of a component The view is looking down at the top of the component showing only pin numbers not pin functions Physical Transcript A transcript of physical events such as key strokes and mouse movements You use physical transcripts to recreate a given session state See also Logical Transcript PIC See PICture file file Generally refers to pic files a Mentor Graphics picture file format that represents graphical data In Release 7 0 Mentor Graphics used this format to send design data or graphics to a printer In Release 8 0 pic files are just one of many formats recognized by the print servers Mentor Graphics Glossary B 1 P 7 A lBIc bpIiEI FIGIHI J KIL 5 1 Anelectrical connection between an instance and a net pin is part of symbol body 2 symbol s connection point between an external net and the internal c
61. Print Server Print Weight Printable Area Printer Printing Option Prio Process Process Data Process Variable Product Development Process Product Life Cycle Program Progressive Disclosure Promoting Cells Prompt Prompt Bar Property Property Name Property Owner Property Specification Property Text Property Value P 2 Mentor Graphics Glossary B 1 QIRISITIU Y 27 Packet A collection of information in a fixed format transmitted as a unit over a communication medium Network data is transmitted in packets Pad A temporary unnamed file that holds the information displayed in a window Page Description Language A method of describing text and graphics on a printed or displayed page For example a page description language usually has commands for describing lines arcs and text strings as well as for positioning and scaling objects PostScript and imPRESS are two popular page description languages Palette A static or resident menu made of an array of items that occupy a given area of the screen You cannot move or resize a window over a palette Panel A user defined rectangular region in a graphics window such as the trace or view window which is usually smaller than the full size of the page Once you specify a panel you can plot the contents of only the panel if desired Panels exist in some V8 x applications but not in others Parameter Variables tha
62. Summagraphics SunOS Superuser Swap Code Swap_set Switch Symbol Symbol Model Symbolic Link Synchronize Two Network Servers Synonym Syntax Synthesis System System 1076 System Architect System Clipboard System Component System Design SDS System Design Series System Design Station Systems Engineering System Instance System Manager System Model Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 7 System Requirements System Symbol Mentor Graphics Glossary 1 6 3 QIRISITIU Y 7 Sans serif A font name that means literally without points Sans serif characters have smoothly terminated extremities The following is sans serif sans serif Save To write changes made to a data file to a storage device for safekeeping Scale Factor A numeric value applied to graphical data to increase or decrease its size for plotting For example a scale factor of two results in a plotted picture twice the size of the original Scan Chains Circuitry that forms a shift register of sequential devices in a design that allow verification of data at each register in the chain every clock cycle Scan Insertion The process of including scan circuitry in a design SCF See Server Configuration File Schematic Model A schematic diagram created with the Schematic Editor Design Dataport or synthesis applications Many schematic
63. a Flow Diagram or State Transition Diagram that connects one connectable element to another See also Control Flow Data Flow and Transition Container A special type of design object that can contain other design objects Containers are the Design Manager equivalent of file system directories A container is a design object whose fileset includes one or more directories Containers can contain other design objects and unlike a directory they have a special unique icon that indicates their type See also Containment Hierarchy Containment Hierarchy The containment hierarchy is the organization of design objects held in containers throughout the file system In the context of hierarchy you can think of a container as simply a directory See also Container Mentor Graphics Glossary B 1 C 15 J KILIMN OP QIRISITIU Y 27 Contents Mode When the contents of a directory are displayed in a navigator window the navigator window is in contents mode The navigator window is always in contents mode unless you have just explored the references of a design object In contents mode the navigator title bar displays the absolute pathname of the directory whose contents are displayed in the navigator window See also Reference Mode Context Diagram The Context Diagram is a type of system environment diagram It is a graphic view of a system that describes the relationship between the system being modeled an
64. and above the message line The session area contains document windows Mentor Graphics Glossary B 1 S 7 J KILIMN OP QIRISITIU Y 27 Session Clipboard A temporary storage area accessible only to applications running under a particular session Session Process The session Process is the Process of the top level cell in the active window Session Window A specialized area that exists immediately within the operating system window containing the session area the window title bar pulldown menu bar and message area It appears when you first start an application because it is the backdrop of your Mentor Graphics environment Although you can hide the session window under operating system windows or other operating system objects all application windows and graphic objects are stacked on the session window Setting A parameter that does not cause an operation but rather influences the outcome of related operations Once set it influences subsequent operations See also Printing Option Shape A shape is a closed polygon that exists on a single layer Shared Blocks The number of blocks that contain links to the MGC_HOME shared portion of the master Mentor Graphics tree Each shared block is equal to 1 kbyte Sheet 1 A page of a schematic Can contain the entire schematic or can be of several sheets that represent the schematic model hierarchy See also Schematic Sheet 2
65. ansition Diagram that represents a child state machine See also Simple State Compound Search An advanced full text searching operation compound search allows users to search either for documents that have both String A and String B in them or for documents that have either String A or String B in them Compound Site A location for a gadget in a dialog box containing compound or primitive sites A compound site is a mechanism for controlling the layout of primitive sites Computer Graphics Metafile An industry standard file format designed for the storage and retrieval of picture information The file format is a set of elements that describe pictures in a device independent way The plotting of CGM files is not supported in Release 8 0 but will probably be a supported object type in future releases Concurrent Design A design methodology in which multiple product parameters are taken into consideration at the same time through the sharing of analytical information among disciplines Concurrent Events Occurrence of two or more events in the same time period Condition A condition in a State Machine is a boolean expression that conforms to VHDL syntax and when it evaluates to TRUE causes a transition to occur The expression usually consists of a flow name a relational operator and a flow value See also Transition Mentor Graphics Glossary B 1 C 13 J KILIMN OP QIRISITIU Y
66. any cell in the hierarchy in the active context cell database The cell s template attribute file references all cells that are included in the hierarchy of the subcells Subcircuit 1 The interconnection of AccuSim II primitives to define a circuit that can be referenced repeatedly in an AccuSim II netlist or Design Architect sheet 2 Anon primitive component in SPICE terminology S 16 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Submenu See Cascading Menu Subnetting A way of dividing a single logical network into smaller physical networks to simplify routing and troubleshooting Subsystem A system that is part of a larger system A subsystem is no different to a system except in the context to which it is referred The designer who creates a system might see it as a complete system but a designer who then uses it in a larger system sees it as a subsystem Subtree components directly or indirectly below a given component in the design hierarchy Summagraphics The Summagraphics puck a four key graphic input device that can be moved on its own tablet SunOS The Sun operating system A BSD UNIX based operating system with Sys V UNIX extensions Superuser A user account for with almost all permissions in the operating system Normally the account is named root Swap Code Some ports are electrically the same for these ports you can specify that they are the
67. aracteristics of a physical device that is a component Mentor Graphics uses specifications from manufacturers datasheets during model development to compare Mentor Graphics simulation model performance characteristics against manufacturer s component specifications Datasheet Value Numerical values for a component s electrical characteristics Sources for datasheet values are tabular or graphic curve data values from datasheets Alternatively you can manually measure a limited amount of data Data System A self contained system with defined inputs and outputs that describes data transformation Typically used for combinational logic See System Instance System Symbol and System Component Data Transform A subsystem that represents a data block There is no semantic difference between a data and control transform but a data transform is typically used to describe data transformation and is typically defined by a child Data Flow Diagram or VHDL Specification view See Transform Instance and Transform Component Data Type A classification of data recognized by an application Examples of data types are string boolean and vector DCOP The acronym for DC Operating Point DDMS The Design Data Management System is the entity responsible for managing the lookup and acquisition of persistent data objects requested by applications The DDMS interacts with the data models and low level IO facilities to accomplish the reading and writi
68. arameters of a device as compared to nominal delay models that assume equal rise and fall times R 8 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 7 Rlogind The daemon that allows you to log into a remote workstation Root See Superuser Route set This property specifies the shapes that comprise a port which can be treated as equivalent for routing purposes Routed The daemon that maintains the routing table on a TCP IP gateway The routing table provides the communication path between the originating host of the packet and the destination host when the packet must make one or more hops Route Point One location along the path of a flow or connector Route points can be specified so that a path curves Router A device that lets two networks that use the same protocol communicate with one another router usually only translates information through the fourth layer of the ISO model to establish reliable communication among the networks See also Bridge and Gateway Routing Routing is the process of placing and connecting signal and power paths between the standard cells and blocks Row A row which is logical object is a floorplanning aid that helps you place standard cells Rows are on a special layer called row RPCD See Remote Procedure Call Daemon Rubberband Box An outline in a rectangular shape that dynamically tracks mouse pointer movement Typically when
69. area bordered by a rectangular box within which a selected design object s references are displayed and modified The reference window displays exactly the same items as the navigator does when a design object is selected and its references are explored See also Reference Reference Handle Reference Network and Reference Property Referenced Cell When you place an instance of a cell in your design ICgraph maintains a pointer to where the instance came from on disk called a reference Thus cells that you place in your design as an instance are called referenced cells R 4 Mentor Graphics Glossary B 1 QIRISITIU Y 7 Register A Library To add a library to the network server database thereby making the contents of the library available to users Registrar The Registrar is an application used to register declare tool and data types so that the Design Manager can recognize them The Registrar is a graphical easy to use application that does not require knowledge of C to perform the registration process For more information about the Registrar refer to the Registrar User s and Reference Manual See also Design Manager Registration and Type Registry Registration Registration is the process of defining data and tool types Registration is done using the Registrar See also Registrar Type Registry Model Registration Command Registration and Tool Registration reg mode
70. around on a flat surface Mouse Pointer A visual display pointer that tracks mouse movement The mouse pointer s shape depends on its location In the session window the mouse pointer is an arrow Move To delete selected text from one area while inserting it in another Moving Pointer A mouse pointer whose shape indicates that you must move the mouse to complete the operation M 12 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 7 MSB The acronym for most significant bit One MSB is equal to VREF divided by 2 where VREF is the reference voltage This term applies only to Analog to Digital and Digital to Analog Converters MSR Print Server Mentor Graphics Software Rasterizer A plotting software package that uses high performance integer based algorithms to render graphical data that can be output to other Mentor Graphic print servers for plotting Must_connect This property is attached to a pin port and can have either a positive or negative value MWM See Motif Window Manager My_net This property specifies the net to which you plan to connect the power port Mentor Graphics Glossary B 1 M 13 QIRISITIU Y 27 14 Mentor Graphics Glossary 1 S TIUIVIWIX Y 27 Glossary N The following terms are described in this section Name Server Notepad Text Named
71. bed points in a computer routine Ink Jet Printing A process in which ink jet printers apply discrete jets of ink directly onto the paper or other media that they are printing During graphic mode printing a jet of ink corresponds to a single bit of print information Ink jet printers like dot matrix and laser printers are raster scan devices that print one or more lines at a time Input Arrival The input arrival constraint defines the time at which the signal at a particular input becomes stable with the circuit clock The input arrival time depends on the delay outside the circuit This time might be due to external devices or some asynchronous timing requirement Input Arrival Time The time at which the signal at a particular input becomes valid The input arrival time depends on the delay outside the circuit This time might be due to external devices or some asynchronous timing requirement The input arrival time can be expressed with respect to a clock edge in the case of sequential circuits or relative to other input arrival times for combinational circuits Input Output The techniques media and devices to achieve communication Insertion Cursor The graphic symbol that provides the visual cue to the location of the insertion point Insertion Point The point in an entry area shown by the presence of the insertion cursor where text or graphics appears when you press keys on the keyboard or insert objects through menus or co
72. behavior is specified algorithmically BLMs are behavioral level models Bi directional A characteristic of a pin or model that allows it to pass signals in either direction Bit A binary digit that has a value of 1 high true or 0 low false volts Bitmap A two dimensional array of memory in which each element of the array represents a pixel A display or printer can output the contents of a bitmap Pixels of the array that are turned on appear black on the printed page pixels that are turned off appear white For multi plane bitmaps each plane of pixels is associated with a different color BJ 130 and BJ 130e Plotter See CheckPlot Mentor Graphics Glossary B 1 B 3 J KILIMN OP 5 Y 27 BJT The acronym for Bipolar Junction Transistor Blackbox A hierarchical control that prevents AutoLogic from optimizing or analyzing the contents of a hierarchical block AutoLogic does not consider the timing through the hierarchical block when performing timing analysis nor does it optimize the logic within the hierarchical block BLM Behavioral Language Model a C C or Pascal program that models the behavior of a component A BLM describes the function of a component at the algorithmic level Block dir This property controls over the cell routing and compaction by blocking the direction of automatic routing Blockage Blockages are areas in which the router is prohibited from
73. bol The portins and portouts on a schematic are special instances that connect to nets whose names must match the symbol pins In IC a port is a logical object that includes one or more shapes or paths called port members Ports define where connections be made to a cell at the next hierarchical level P 10 Mentor Graphics Glossary B 1 QIRISITIU Y 7 Port Member A port which is a logical object includes one or more shapes or paths called port members Port Number Numbers used by TCP IP to identify end points of communication PostScript 1 A page description language PDL specifically designed to communicate a description of a printable document or graphic from a computer based composition system to a raster output printing system 2 Format generated by the Context TIF ERI server for laser print servers that drive PostScript printers PostScript Device A printer or plotter served by a PostScript print server It executes commands from the PostScript page description language PostScript Interpreter Generally runs in an independent device such as a laser printer The interpreter translates PostScript operations and data into device specific codes and controls the output device in order to generate the graphics being described on the page Power Path Power paths carry current to cells to power the cells operations PowerFET The acronym for power field effe
74. bout the location of objects and interfaces Location Broker Client Agent Part of the location broker Programs communicate with location brokers via the location broker client agent Location Cursor A rectangular symbol that marks the location of the keyboard input focus Typically this symbol is a rectangle that surrounds the current object For a prompt bar dynamic the cursor is a crosshair location Mentor Graphics Glossary B 1 L 5 J KILIMN OP QIRISITIU Y 7 Location An ASCII file that maps platform independent soft prefixes to hard pathnames Soft prefixes can then be used in Mentor Graphics designs in place of the hard pathnames Lock A lock is a state that the Falcon Framework provides to avoid concurrency conflict among several users trying to access a single design object The Falcon Framework provides two kinds of locks read locks and write locks When your application read locks a design object every user can read but not edit that design object This lock is also known as a shared lock because several applications can read lock a design object simultaneously The object remains read locked until all of the applications release their locks When your application write locks a design object you can edit that design object In addition others can read it but no others can edit it or lock it To edita design object the application must first write lock it This lock is als
75. cated in the design viewpoint used to evaluate source objects These rules define parameters primitiveness substitutes visible properties and inserts D 6 Mentor Graphics Glossary B 1 J KILIMN OP 5 Y 7 Design Cycle The sequence of phases through which a design evolves For example the typical electronic design cycle consists of concept design simulation layout and test Design Data Configuration Management Configuration management is the process of managing configurations Configuration management includes copying and releasing designs See also Configuration and Configuration Object Design Database A set of objects that describe a design See also Design Design Dataport A programmatic interface that gives a C programmer direct access read and edit to component data in the database Design Decomposition The process of defining the architecture components interfaces and other characteristics of a system or component Also the result of this process Design Entity A design entity is the primary abstraction level of a VHDL hardware model The design entity represents a cell chip board or subsystem A VHDL design entity is composed of two main parts a VHDL entity declaration and a VHDL architecture body Design Evaluation The process of evaluating expressions parameters and frames to establish electrical connectivity across the design The mechanism that allow
76. ce document can include a schematic sheet or System 1076 ASCII source text Source Object A design object used by Design Architect to organize and store design data It contains unevaluated and unlinked data Source Technology The technology in which a design is expressed before optimization Spacing The control of white space on a page In the vertical direction spacing is called leading or line spacing and controls the amount of white space between the baseline of one line of text and the tops of the ascenders of the line of text below In the horizontal direction spacing can refer to the width of each character or the amount of white space between the individual characters in a word inter character spacing Spec Entry The process Mentor Graphics performs during modeling that involves entering datasheet specification values into a dialog box Sources for datasheet values can be manufacturers datasheets or measured data S 12 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Specification Document See Requirement View Specification Statement Statements that describe the overall environment for the application using the Rules File Splice A connectable element in a Data Flow Diagram that allows flows that share the same origin or destination to share their route up to a certain location Unlike a junction it allows flows with composite types to be composed or decomposed and
77. ch things as load dependent delay calculations adding bypass capacitors to the design viewpoint load dependent delay calculations capacitance properties to nets and putting reference designators on schematics Back annotations are stored in a design viewpoint and can be moved copied from one viewpoint to another In IC ICextract Back annotation updates a logic design with extracted parameters from a corresponding layout It back annotates net properties derived from lumped parasitic extraction and pin time delay properties derived from distributed parasitic extraction Backannotation Object A database object that is a storage container for back annotation data connected to a design viewpoint and is dedicated to storing only back annotation information It contains the instances net or pin pathname with the associated property name and value for each property that is back annotated by a downstream application Back annotation Objects are managed by the DVE Background Processing In this mode the computer does not wait for a command to terminate before it prompts you for another command This lets you start a task and then go to another task while the system continues with the initial one Generally the computer completes the task without your intervention Backup The saving of data from a workstation s disk to backup media Back End A simulation kernel that provides the programs needed to run simulations on a circuit design In the
78. connectable element in a Data Flow Diagram or Context Diagram that allows flows that share the same origin or destination to share their route up to a certain location See also Splice Mentor Graphics Glossary B 1 J 1 QIRISITIU Y 27 2 Mentor Graphics Glossary 1 S TIUIVIWIX Y 27 Glossary An abstract entity that can be established to monitor and preserve the states strengths and values of nets and pins Key Identifier The name of an AMPLE function bound to a key or keys on the keyboard Examples are key_cut and control s Keycard A card provided by Mentor Graphics that identifies the purpose of each function key on the keyboard in their normal shifted and control modes Mentor Graphics Glossary B 1 K 1 QIRISITIU Y 27 K 2 Mentor Graphics Glossary B 1 jJ KILIMN OP QIRISITIU Y 27 Glossary L The following terms are described in this section L KEY WORDS Label LAN LANG Latched Design Layer Definition Layer Operation Layer Set Layout Netlist Layout Verification Leaf Name LED Letter Quality Letterform Library Library Category Library Creation Library Server License Daemon License Data File License Server Link List Box LLBD LM LICENSE FILE Load Local Loca
79. connectivity already present in the layout cell you are currently editing and compares the connectivity of the layout and the source Directive A valid entry in a server or job configuration file Directives usually consist of a keyword and value pair For example page width 8 5 in Directory An object in the file system that contains files and other directories Discrepancy A discrepancy is any difference between the connectivity of the layout and the source Discrete Component A single packaged semiconductor device component Mentor Graphics implements AccuParts models for discrete components with the exception of some models like power FETs temperature compensated Zener diodes and transient suppressors using built in AccuSim II primitives Discrete components include the following e Bipolar junction transistors BJTs Diodes Junction field effect transistors JFETs Metal oxide semiconductor field effect transistors MOSFETs Zener diodes Power FETs are also discrete but Mentor Graphics implements power FET models as macromodels D 14 Mentor Graphics Glossary B 1 J KILIMN OP 5 Y 7 Discrete Device See Discrete Component Discrete Model Parameter The mathematical variables whose values when properly selected match the model template s characteristics to those of the physical component and its specifications Discrete model parameters appear in
80. cs Glossary B 1 J KILIMN OP QIRISITIU Y 27 This property specifies a relative position within a cell where you can preplace instance Placement Placement is the process of placing standard cells or blocks onto the floorplan Plain Text Text that does not include page formatting or font information Plotter Device used for outputting graphical or textual data onto paper vellum or film A plotter is usually connected to a computer through a serial or parallel interface cable and requires that the input data be translated into a language and format that it can understand Thus a plotter needs print servers Plotters are often referred to as printers See also Printer Point 1 To position the pointer or location cursor 2 A unit of measure in typography that is approximately 1 72nd of an inch Font sizes are typically measured in points 72 point type therefore measures approximately an inch from the bottom of the descender to the top of the ascender Point Size The size of a font measured in points Point to Point Routing The point to point router enables you to route between two specified points and optionally start and end the route on specified layers instead of the current layer Pointer See Mouse Pointer Pointing Device A device such as a mouse trackball or graphics tablet that allows you to move a mouse pointer on the workspace and to point to graphic
81. cs tree that resides a user s local system To conserve disk space the user tree normally contains copies of frequently used packages and accesses other less frequently used packages via symbolic links to a Master tree In a User tree the shared directory is a link to Master tree s shared directory User trees are optional U 2 Mentor Graphics Glossary B 1 QIRISITIU Y 27 User Unit See User Time Unit Userware 1 The windows key definitions and menus that provide the user interface or communication link between the user and the application 2 The software you use to implement or modify the user interface and other programs The userware code is written in AMPLE For example userware can create customized functions display colors window layout pop up menus and scroll bars Utility Programs provided with the operating system to perform frequently required tasks such as printing a file or displaying the contents of a directory UUCP UNIX to UNIX Communication Program central program in a group of programs that together permit communication between local and remote UNIX hosts by using either dial up or hard wired connections UUID File An ASCII file created by the UNIX command etc ncs uuid gen that contains a universal unique identifier UUID The BOLD online information system uses UUIDs when you create a BOLD Cell For more information about uuid gen issue the fo
82. ct transistor Press To push or hold down a mouse button or a key Note that to hold down a mouse button while moving the mouse is dragging Clicking consists of pressing and releasing a mouse button without moving the mouse pointer See also Drag and Release Mentor Graphics Glossary B 1 P 11 QIRISITIU Y 7 Primary Entry A primary entry is a configuration entry that you add to a configuration as opposed to secondary entries which the Design Manager adds during a build operation The entry is only a pointer to the design object version See also Build Rules Configuration Entry Secondary Entry and Reference State Primitive An instance that does not contain other hierarchically lower instances Primitive instances are the lowest level in the design hierarchy Examples of primitives include BLMs HML models QuickPart models and builtin models Sheet based models are not primitives Primitive Property A primitive property which you can add to an schematic by using the Idea Station Design Viewpoint Editor prevents Direct LVS from looking at lower hierarchical levels when it flattens the source circuit Primitive Site The simplest place holder in a dialog box It can contain either a control or a simple value See also Compound Site Print Job A print request spooled to a print server The print job generally consists of a job attribute file JAF and a data file containin
83. d IC design is the process of creating an IC by creating and editing each polygon manually Full Text Search Index An index containing a list of the words and their locations in a document When a BOLD Browser user initiates a search for a word or word phrase the BOLD Browser searches this index rather than scanning through the text of all the documents Function A set of instructions implemented in AMPLE and designed to run in an application These instructions can be other functions commands or F 8 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 programming constructs recognized by a Mentor Graphics application See also Builtin Functional Decomposition A method of designing a system by breaking the system down into components corresponding directly to system functions and sub functions Also known as Hierarchical Decomposition Functional Model A model that defines design connectivity and logic function but not timing Functional Primitive A component that is not further decomposed but fully defined by its own view However a component can have both a Data Flow Diagram view which describes its behavior in terms of lower level components and say a VHDL Specification view which fully defines its behavior Therefore the current view setting determines whether a component such as this is a functional primitive Functional Test Sequences of input stimuli applied to the evo
84. d in the attribute file consists M 6 Mentor Graphics Glossary B 1 QIRISITIU Y 27 of references properties and versions If design object is locked or frozen this information is also present See also Attribute File Methodological Operation Methodological operations select polygons that have a specified aspect Metric Determines the measurement algorithm that is used MGC Working Directory The MGC working directory is the pathname of the internal working directory that is appended to the beginning of relative names during pathname resolution See also Absolute Pathname Hard Pathname Relative Pathname Soft Pathname Soft Prefix Symbolic Link MGC COMPONENT STATUS Enables design status to be saved MGC DISABLE BACKING STORE Controls whether a graphic window image is saved when covered by another window or iconified MGC ERI HOSTS Lets an ERI client workstation search a specified list of remote hosts for the required ERI separate process server MGC HOME Sets the location of the MGC tools directory MGC IC QUERY ON MERGE Controls whether nets are merged without querying the user in CE mode MGC KBD Specifies the type of keyboard attached to your workstation MGC LOCATION MAP Defines the pathname of your location map MGC NO DASHED WIDE LINES Controls whether dashed wide lines are displayed on Sun workstations Mentor Graphics Glossary B 1 M 7
85. d of the simulator SimView A user interface technology designed to provide consistent graphical access to Mentor Graphics simulation products Site The location of a gadget or group of gadgets within the dialog box A site can contain other sites or gadgets Sizing Changing the size of window or a graphic object in the workspace See also Resize and Grow S 10 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Sizing Operation Sizing operations either oversize or undersize the polygons that are on either an original or a derived polygon layer in order to generate a derived polygon layer Skew Edge Skew edges are edges that have an orientation that is neither orthogonal nor at a slope of 1 or 1 SLD Names Structured Logic Design SLD names which are unique identifiers for each instance pin and net in a design By default the Symbol Editor and the Schematic Editor assign SLD names as you build a design however you can specify your own names with the INST PIN and NET properties Examples of default SLD names include I 4 and N 23 which are sometimes called handles Slider 1 One of the graphic components of a scroll bar The slider is the object you drag along the scroll area to change the area displayed in the window 2 A dialog box gadget that uses a slider to traverse a scale of numbers SNF Server Normal Format one of several non portable binary formats common
86. d the system s surrounding environment The Context Diagram contains a single system symbol that represents the whole system This is connected to externals by input and output flows The Context Diagram can also contain junctions and annotation blocks Continuum QuickHDL A coupled kernel simulator that includes a VHDL compiler and separate graphical user interface from standard Continuum SimView provides the graphical interface for schematic design and for AccuSim II related data The AccuSim II kernel operates on the analog partition and the QuickSim II kernel operates on the digital partition of the design FlexSim synchronizes the calculations between the kernels Control Architect The System Architect session window that supports the animatable State Transition Matrix and Control Panel editors See also System Architect Control Flow A flow that transfers control information on a Context Diagram or Data Flow Diagram There is no semantic difference between a control flow and a data flow A control flow typically represents a signal that controls the behavior of its destination transform See also Connector C 16 Mentor Graphics Glossary B 1 QIRISITIU Y 27 Control Key Sequence A keystroke combination Ctrl in combination with another key used as a shorthand way to specify commands To enter a control key sequence hold Ctrl down while pressing another key Control Panel 1 A
87. d within a type definition package source view Type Definition Package A set of type definitions Type definition package TDP is a general term for both the Type Definition Package Component and the type definition package source view Type Definition Package Component A component directory that contains a type definition package source view and can also contain a compiled VHDL package header created by compiling this source view Package Components can be contained within either library directories or System Components Mentor Graphics Glossary B 1 T 11 J KILIMN OP QIRISITIU Y 27 Type Definition Package List The list of Type Definition Packages that are available for use by a Context Diagram or Data Flow Diagram Type Definition Package Source View A VHDL source file used to define types for use in System Architect The file should only contain a package header containing TYPE and SUBTYPE declarations type definitions Type Registry A type registry is a file that contains type definitions for design objects and tool viewpoints used in the Design Manager See also Type Registrar and Registration Typeface See Face T 12 Mentor Graphics Glossary B 1 J KL MN OP 5 Y Z Glossary The following terms are described in this section UIMS Universe Universal Comment Unregister A Library Server User Account User Informatio
88. dentifies the type of recognition logic that Device Recognition uses to find groups of polygons that are a particular type of device Element Property A property telling AccuSim II what kind of analog component an instance represents that is whether the component is a resistor a capacitor a transistor and so forth For example the value of the Element property for the BJT 2n2222 which uses the component MGC_APLIB npn is Q Q represents transistor Because every System Modeling Block is a subcircuit the Element property on every modeling block symbol is X which is the property value for a subcircuit defined element Mentor Graphics Glossary B 1 E 3 J KILIMN OP QIRISITIU Y 7 Encapsulation The process of integrating design tools or design data into the Design Manager Encapsulation controls how applications and data are used within the Design Manager without affecting the application or data This is also referred to as tool registration See also Design Manager and Design Object Engineering Change Order An engineering change order is a process that describes a change or changes made within a large system such as the logic that drives an IC layout See also ECO Entry Box An area in which you enter text numbers DSS or AMPLE expressions Typically an entry box is part of a dialog box or prompt bar Entry Node A symbol on a child State Transition Diagram that connects to t
89. directory each application executes it automatically when you invoke the application or the session Startup files allow you to modify your Mentor Graphics application environment State A resting mode of a system See also Composite State Simple State Start State State Machine Transition and Condition State Diagram See State Transition Diagram State Machine A view of a system or transform that defines the behavior of this system or transform in terms of a finite State Machine This is a mathematical model of a system The system is represented by a finite number of states with a finite number of associated transitions between pairs of states The State Machine is represented by a State Transition Diagram in the STD editor and by a State Transition Matrix in the STM edit animate window of Control Architect A State Machine can also be exercised by a Control Panel See also Mealy State Machine and Moore State Machine State Matrix See State Transition Matrix State Transition Diagram A graphical representation of a State Machine A State Transition Diagram STD consists of a number of states transition nodes and links connected by transitions The diagram can also contain annotation blocks and a default actions block Also known as a State Diagram S 14 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 7 State Transition Matrix A tabular representation of a State Machine A Stat
90. diting context in the IC Session The IC Environment stores all cell databases as a set of similarly named files on disk The top level cell s template attribute file references all cells that are included in the hierarchy of the top level cell The top level cell can reference any number of subcells Topology 1 The physical interconnection of AccuSim II primitives to form a macromodel 2 The layout of systems that are connected to networks and of networks that are connected to each other Network topology can be represented through both physical and logical diagrams Torque A vector quantity defined for rotational systems Torque is a measure of force applied at a distance from a reference point In the rotational electromechanical analogy for behavioral System Modeling Blocks current represents torque The units are such that one ampere represents one Newton meter N m Torsion A measure of the pliability of a rotational element Torsion refers to the amount of twisting or stiffness a rotational body experiences when a torque is applied Touchpad 1 An input device that converts graphics and pictorial data into numbers It generates graphic data when touched by a finger or stylus 2 A touch sensitive surface built into the right side of the HP Apollo type 1 keyboards See also Graphic Input Device T 8 Mentor Graphics Glossary B 1 QIRISITIU Y 27 Transcript A record
91. ds upon another computer on the network its boot host for access to software and the file system In looser usage this term sometimes refers to any hardware device that runs the X server in order to act as a display for some application that executes on another computer This manual avoids this loose usage of the term Mentor Graphics Glossary B 1 X 1 J KILIMN OP QIRISITIU Y 7 X Windows Font Path An ordered list of directories maintained by the X server which it uses to search for fonts to display text X 2 Mentor Graphics Glossary B 1 MN OP S TIUIVIWIX Y 7 Glossary Y No entries Mentor Graphics Glossary B 1 Y 1 QIRISITIU Y 27 Y 2 Mentor Graphics Glossary B 1 S Y 7 Glossary Z Zoom The act of reducing or magnifying an image in a window Mentor Graphics Glossary B 1 Z 1 QIRISITIU Y 27 2 2 Mentor Graphics Glossary 1
92. e Transition Matrix STM contains a row for each state and a column for each condition If the STM contains Moore states state actions are displayed in a State Actions column Static Timing Analysis An analysis of circuit timing without test vectors Status Code A status code is an integer that corresponds to an error message The status code is returned to the status code stack after a function executes The status code typically refers to the number at the top of the status code stack A status code of 0 means no error occurred See also Status Code Stack and Status Message Status Code Stack A status code stack 1s a list of status codes See also Status Code and Status Message Status Message A status message is a vector of strings that correspond to the status codes on the status code stack See also Status Code and Status Code Stack STC The acronym for Start Conversion It is an input voltage signaling the beginning of an analog to digital conversion When an event occurs on the STC pin the A to D Converter begins a conversion An event in this context is a rising or falling edge In this manual this term applies only to Analog to Digital Converters STD The acronym for State Transition Diagram Stop A Server To terminate a library server resource server or network server process in an orderly fashion This involves shutting down all active NCS interfaces and informing associated servers of that server s termination
93. e need to write a software description of a complex device such as a microprocessor This equipment is obsolete HOME Your home directory which is used by your user level startup file H 4 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 7 Home Directory The directory in which you are placed after you log in your initial working directory Your home directory is specified in the account database Typically your home directory name is the same as your user account name Homogeneous Network A network composed strictly of systems workstations from a single vendor that use the same type of processor and operating system such as HP Apollo workstations For example a network that contains an HP Apollo DN4500 DN5500 and Model 425t is a homogenous network Hop The passage of a packet through a router or gateway The number of hops between the origin and destination indicates how many routers or gateways a packet must pass through Host A computer attached to a network Hot Key A hotkey is an alphanumeric keyboard key that has an IC Station command attached to it You execute the command by pressing the keyboard key IC Station commands can be attached to any of the 62 alphanumeric keys Hotspot 1 The region in a menu item in which a specific action causes an associated cascading menu to pop up 2 The point on the visible mouse cursor that is the action point Hourglass A m
94. e upper right corner of a window These buttons provide a short cut way for minimizing and maximizing the window Window Decoration The window control buttons and frame that surrounds a window Window Frame The area surrounding a window A window frame can consist of a resize border window menu button a title area and window control buttons Window Menu A pulldown menu that displays when you press the window menu button on a window frame This menu enables you to control the size shape and location of the window to close the window and to hide or show the window s scroll bars Window Menu Button The push button on the upper left corner of a window that contains a pulldown window menu that manipulates the window Window based Application An application that uses a window environment to allow user interaction Word See Digital Word Working Directory The default directory in which a process creates or searches for objects Mentor Graphics Glossary B 1 W 3 J KILIMN OP QIRISITIU Y 27 Workstation A network computer Each workstation can use the data programs and devices of other network workstations Each workstation contains main memory and either has its own disk or shares one with another workstation In the UNIX computing environment a standalone computer probably on an Ethernet network Each workstation a networked environment can use the data programs and devices of other n
95. edural language that supports dynamic linking with C libraries and modules AMPLE replaces the pre V8 HI macro language Mentor Graphics Glossary B 1 A 3 J KILIMN OP QIRISITIU Y 27 AMPLE PATH Lets you define alternate locations where the system looks for userware Analog Modelfile A netlistfile Annotation Block A block of text containing commentary information on a Context Diagram Data Flow Diagram or State Transition Diagram Apollo Token Ring Network The proprietary token passing ring network that serves as the standard interconnection method for HP Apollo workstations Also called the Domain ring network Application A Mentor Graphics program that enables the user to produce useful work in a specific domain such as IC design digital simulation or PCB layout See also DSS Application Application Variable Application variables provide defaults for function arguments that you do not supply Application Window A window wholly contained within the session window You use this window for most of your communication with an application Windows can have specific functions For example the transcript window records function calls See also Session Window Architectural Analysis This is the process by which the structure of a design is evaluated Principle factors that can be considered during architectural analysis are reliability performance maintainability understandability
96. eight also has 300 dpi so a one inch square contains 90 000 dots that can be turned on or off Red Green Blue Red green blue The three colors used in color displays Reference A reference is a pointer from one design object to another Design tools use references to associate design objects References contain the object ID name type and sequence version of the referenced object Both applications and users create references from within the Design Manager You can define a reference to an explicit version of a design object or to the current version Properties can be added to references to store information about the reference For example in IC when you place an instance of a cell in your design ICgraph maintains a pointer to where the instance came from on disk called a reference See also Reference Handle Reference Network and Reference Property Reference Handle A reference handle is an integer that uniquely identifies the reference See also Reference Reference Network and Reference Property R 2 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Reference Help A form of detailed online help that users can request from within a Mentor Graphics application Reference help is available for menu items and dialog boxes When users request reference help the BOLD Browser accesses the appropriate information from an online library This help is a follow up to quick help a
97. el The implementation model of a system is derived from the System Model It creates a cost effective solution to the system functional requirements using the available technology See also System Model ImPRESS A language that communicates with certain Imagen printers The laser print server outputs data in either PostScript or imPRESS language In place A hierarchical control that tells AutoLogic to optimize the block while maintaining its hierarchical boundaries within the design Inactive Window A window that does not have the input focus Include Statement Statements that include other Rules Files within a Rules File Incremental Change The ability to update a change to a portion of the design in simulation or DVE memory without having to re load the entire design Inetd The daemon that manages TCP IP services INFORM The Mentor Graphics online documentation and help library which can be viewed using the BOLD Browser INFORM is a collection of information on CD ROM that provides to the network a complete set of Mentor Graphics documentation and online help A tool for viewing administering and printing Mentor Graphics online documentation 1 4 Mentor Graphics Glossary 1 QIRISITIU Y 27 Initialize 1 Toestablish an initial condition or starting point 2 To set counters switches and addresses to zero or other starting values at the beginning of or at prescri
98. enerally use flat layout for smaller chip designs defining functional blocks and creating library cells for automated layout Flatten 1 A hierarchical control that tells AutoLogic to flatten all levels of hierarchy beneath a particular hierarchical block Instances marked with a flatten hierarchy control have all hierarchical boundaries removed within that block and the block contents incorporated into the parent block 2 An algorithm that attempts to express a design in two level form FlexTest FlexTest is a high performance sequential Automatic Test Pattern Generation ATPG system that allows you to create a set of test patterns that achieves a high accurately measured test coverage for your cycle based circuits Floating License Floating licenses are available through a network license broker and can authorize a particular workstation to run the application or specific functionality within the application Floorplan A floorplan is a topological structure comprised of rows and shapes used as guides for placing cells in a design Floorplanning Floorplanning is the process of estimating the chip area that will be used for each standard cell or block in the design F 4 Mentor Graphics Glossary B 1 J KILIMN OP 5 Y 7 Floorplan Shape Floorplan shapes are closed polygons that exist on a single layer They are used in top down hierarchical design to plan the shape and size of
99. ent types e Analog switches Comparators Operational amplifiers e Power FETs e PWMs e Temperature compensated Zeners e Transient suppressors Voltage references e Voltage regulators Macromodel Model Parameter The mathematical variables whose values when properly selected match the model s characteristics to those of the physical component and its specifications Macromodel model parameters include numerical values and the model parameter values for the AccuSim II primitives and appear in the SSUBCKT netlist for a macromodel Mentor Graphics Glossary B 1 M 3 jJ KILIMN OP QIRISITIU Y 27 Macromodel Template A generic subcircuit that Mentor Graphics uses to create specific models for a class of analog integrated circuits such as operational amplifiers comparators or voltage references A macromodel template includes the equations and or optimization techniques used to calculate the values of the subcircuit model parameters for a specific commercial component See also Model Template Magnification Factor An integer from 1 to 16 inclusive With these factors you can magnify a bitmaps to fill at most one page width print at true scale at most one page print at actual size or print at the magnification specified by the value for example 2 is 2x Manual Connectivity Extraction Connectivity information is not actively maintained in the GE mode You can execute Connectivity E
100. entation of a component a design Parts include a part name a part type a netlist a graphic symbol spec values and datasheet values Partial Condition Any condition arriving at or leaving a transition node on a State Machine Partial Transition Any transition arriving at or leaving a transition node on a State Machine Part Library A library of Mentor Graphics supplied parts such as gen lib Such components are usually customized at your site See also Commercial Component Library Part Model See Simulation Model Part Number The alphanumeric identifier that semiconductor manufacturers assign to the components they create and sell The part number identifying a physical component also identifies the simulation model for that component Part numbers 4 Mentor Graphics Glossary 1 J KILIMN OP QIRISITIU Y 7 for models typically use lowercase letters For example Mentor Graphics labels the AccuParts model for component 2n2222a as 2 2222 When necessary to avoid confusion this manual uses model part number when referring to an AccuParts model to differentiate between the manufacturer s part number and the simulation model s part number Partition In the UNIX environment a discrete portion of the hard disk You can partition a hard disk during operating system installation or at other times In the Continuum environment a representation of design connectivity for a
101. eplace Remote Host Remote Network Remote Procedure Call Daemon Repeating Entry Box Requirement List Requirement Traceability Requirement View Requirement View Element Mentor Graphics Glossary B 1 Resident Menu Resize Resize Border Resizing Pointer Resolution Resource Server Restore Restructuring Nets Retargetable Entry Revert Rexd RGB Rise Fall delay Rlogind Root Route set Routed Route Point Router Routing Row RPCD Rubberband Box RuleCheck Comment RuleCheck Group RuleCheck Statement Rule File Rule File Comment Rule File Operation Rule File Statement R 1 J KILIMN OP QIRISITIU Y 27 Radio Button A graphic control that simulates a button on a car radio Each button represents a mutually exclusive selection Radio buttons are typically used for setting a state and appear in a dialog box The application usually displays check buttons as small diamond shaped buttons Range A cell address encompassing more than one cell A cell range can be all in one row A1 D1 all in one column A1 A4 or two dimensional A1 C3 Raster Device A device that represents graphical data as a set of dots on a grid A line is represented by turning on several dots in a single path The closeness spacing of the dots determines the resolution of a raster device A typical output device can have 300 dots side by side in a one inch width this is a 300 dpi device Note that the h
102. er demotion to the GE mode but it might be invalidated by editing operations You can also extract connectivity data from the design and you can create correspondence data with ICtrace The GE mode is typically used for handcrafting polygon level layout See also Connectivity Editing and Correct By Construction G 2 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 7 GFL A Mentor Graphics netlist format used by AutoLogic and other tools Ghost Image A rectangle representing the outer boundaries of an object When you move an object a window for example a rectangle moves with the mouse pointer while the object remains stationary When you release the mouse button the object moves to the location where you placed the ghost image See also Dynamic Rectangle GLBD See Global Location Broker Daemon Global Userware common to all applications Also a variable or command available to all programs or parts of a program See also Local Global Location Broker Daemon A data replication manager based daemon that maintains global information about objects on a network or internet The glbd is part of NCS Global Net 1 Nets that span multiple schematic sheets 2 Nets connected to special instances such as VCC and GROUND that contain the Class property with a value of G Global nets contain the Global property and those that have the same Global property value are assumed to be connected
103. ers IC Station compiles the rules when you load a Rule File into an IC Station Session Rule File Comment A comment is a line of text that can be used to document either the Rule File or the Layout Verification Results Rule File comments are composed of text that the Layout Verification tools use to document your Rule File and the results in the DRC Results Database Text that follows either a double slash or an at sign on a single line is interpreted as a comment by IC Station R 10 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 7 Rule File Operation An operation is the basic directive unit within a Rule File It directs the activities of design rule checking connectivity extraction device recognition layout versus schematic comparison and parasitic extraction Rule File Statement Defines derived layers variables and design rule checks and can include other Rule Files Rule File statements either describe actions that are to be performed by IC Station or define Layout Verification variables Mentor Graphics Glossary B 1 R 11 QIRISITIU Y 27 R 12 Mentor Graphics Glossary B 1 J KILIMN OP 5 Y 7 Glossary S The following terms are described in this section Sans serif Save Scale Factor Scan Chains Scan Insertion SCF Schematic Model Schematic Netli
104. es having different names Bundling A technique used by Schematic Generator to group together nets of a common name like NET X or NET X or those nets defined to be part of a bundle Bus A group of related signal lines combined in a schematic or in a simulator They are combined in the Schematic Editor or in the simulator with the Define Bus command However in MISL a bus is a bi directional pin Button 1 A key on a mouse graphic input device 2 A graphic control on a window frame in a dialog box or other graphic tool If you press a button when the mouse pointer is over it it performs an action Button Binding Association of a mouse button operation with a window manager or application function Mentor Graphics Glossary B 1 B 7 QIRISITIU Y 27 8 Mentor Graphics Glossary 1 J KILIMN OP QIRISITIU Y 7 Glossary The following terms are described in this section Cache CAD CAE CalComp Plotter Callable Cancel Capacitance Limit Capacitance Load Card Catalog Entry Carriage Control Character Cascade Arrow Cascading Menu Category CBC CD ROM Caddy CD ROM Drive CD ROM CDE CE Cell Cell Library Cell Reference Cell Reservation Cell View CGM Character Character Set Character String Characters Per Inch Characters Per Line Check Box Mentor Graphics Glossary B 1 Check Button CheckPlot
105. es recognizes both original layers and layer sets by their name number or alias Layout Netlist Contains device identification names and node names that correspond to the layout s component names and to node connection information Layout Verification Layout verification is the process of interpreting the physical layout data to determine whether it conforms to the physical design rules electrical design rules L 2 Mentor Graphics Glossary B 1 J KILIMN OP 5 Y 27 and to the source schematic as well as extracting parasitic information that you can use with simulators to determine if the design will perform according to specifications Leaf Name A leaf name is the portion of a pathname after the last For example the leaf of pathname usr tmp ginko doc mgc is doc mgc LED The acronym for light emitting diode Letter Quality Presentation quality of print on a page Usually this mode of printing is slower than draft mode Letterform The shape of a character Library 1 collection of related components for example Is lib which contains the 74 series low power Schottky component models and is provided by Mentor Graphics See also Online Library 2 Acontainer for System Components in System Architect Any directory containing System Components is considered to be a library by System Architect and must have an entry in the location map Library Category
106. etwork workstations Wtype This property specifies the value of the wire type defined in the wiring type Process variable W 4 Mentor Graphics Glossary B 1 S TIUIVIWIX Y 7 Glossary X X Client Any program usually considered an application that requests display services from the X server X Display A system that runs the X server program and displays the graphics for an X client In the context of this manual you are seated in front of an X display to interact with a Mentor Graphics application X Host A computer system that runs the X client program which in this manual is a Mentor Graphics application X Server The the X Window System program that governs the display of graphics An application makes requests of the X server to display information and the X server interacts with the hardware display device to grant the request The X server also receives and sends information through the computer network By merging these two capabilities the X Window System enables the application to run on one machine and display its user interface on another machine effectively separating these functions and delegating them to different computers on the same network X Terminal A specialized system whose hardware was designed specifically to run the X server fast It is roughly like a diskless workstation except that it usually has less RAM and lacks I O expansion options It depen
107. f the printing These weights are frequently classified as bold medium and light Wide Area Network A network that consists of two or more local area networks connected together over an unlimited distance through a medium such as telephone lines or a satellite link Because of the geographic distance and the medium used communication between remote systems is much slower than if the systems are part of the same local area network Wide Pin A connection point on a symbol to which a bus can be connected Window 1 A rectangular area of the screen that provides two way communication between you and the application 2 A window wholly contained within the session window You use this window for most of your interaction with an application Windows can have specific functions For example the transcript window records function calls See also Session Window 3 A defined area of the screen that contains a specific class of information For example the Menu window contains command menus the Chart window contains graphs or charts of selected waveforms W 2 Mentor Graphics Glossary B 1 QIRISITIU Y 27 4 Foroutput devices physical or logical drawing extents Window Border 1 The resize border around a window including a session window 2 The border around the client area or interior of a window excluding a session window Window Control Button Push buttons in th
108. filter the navigator s display to show only design objects of particular types Digital Modelfile Contains QuickSim II initialization information for RAMs and ROMs Digital Word A set of bits collectively defining some higher level quantity In this manual this term applies only to Analog to Digital and Digital to Analog Converters Dimensional Check Operation Dimensional check operations measure the separation of edges on one or two input layers You can modify dimensional check operations by using a wide variety of secondary keywords Dimensional Check Rules File Operation Generates derived error layers derived edge layers or derived polygon layers by measuring the separation of edges on one or two input layers Dimmed Menu Item A menu item that is not available because of the current menu state Typically the unavailable menu item displays in a gray color that appears dimmer than other available selections D 12 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 7 Dimmed Selection A selection that is not available because of the current operation Typically the unavailable item displays in a gray color that appears dimmer than other available selections DIP See Dual Inline Package Direct Connectivity Extraction Extracts connectivity from the layout geometries to recognize electrically connected nets Direct Connectivity Extraction is the IC Station connectivity backbone tha
109. g the graphical or textual data to print Print Queue 1 The list of print jobs ready to be printed 2 A directory where files to be printed reside Print Server Software that executes on the host computer and translates graphical and or textual data into a format that the printer can understand The print server processes print jobs in the order and priority in which they were spooled The translated output from a print server can be sent directly to the printer or written to a file which can be sent to a printer at another time or place See also Spool P 12 Mentor Graphics Glossary B 1 5 Y 7 Print Weight See Weight Printable Area A rectangular area that defines the limits into which print data be drawn This area can be the physical limits of the device or can be redefined logically Printer The hardware associated with a print server This hardware includes the print head the paper handler hardware and the interface hardware Although the terms printer and plotter are used interchangeably a printer is generally associated with textual data while a plotter is associated with graphical data See also Plotter Printing Option A system defined and maintained internal variable whose value you can change by passing a new value to a function Prio This property specifies the priority of a net for routing Process 1 In IC you must describe the p
110. he parent composite state in the parent STD See also Transition Node Environment Variable Usually associated with your login id or an application The operating system shell maintains these character strings of the form name value where name can be any character string that does not include the dollar sign and does not have embedded white space and value can be any character string including spaces The shell remembers the name and value Notice that the convention is to name environment variables in uppercase characters but this is not required EOC The acronym for End Of Conversion It is an output voltage signaling the completion of an analog to digital conversion When EOC equals one volt conversion is complete when EOC equals zero volts conversion is in progress In this manual this term applies only to Analog to Digital Converters E 4 Mentor Graphics Glossary B 1 QIRISITIU Y 27 ERI External Rendering Interface Software for the generation of renderings of data objects by reference ERI allows applications to obtain graphical views of designs from Mentor Graphics EDA tools and other third party data formats for inclusion in documents viewing printing and plotting in the V8 0 environment The ic eri shell command is used to create a non graphical interface between IC Station graphics and other applications such as print servers and the design manager ERI Server
111. hen this happens each system detects the conflict stops transmitting and waits a specified amount of time before monitoring the network and attempting to rebroadcast Both the transmitter and receiver provide collision detection circuitry to sense when more than one packet has been transmitted on the network at the same time Command 1 An instruction that you give a program or an application See also Function 2 form of AMPLE function syntactically simplified for ease of use Command Argument See Argument Mentor Graphics Glossary 1 C 9 J KILIMN OP QIRISITIU Y 7 Command File An ASCII file containing Schematic Generator functions and or commands This file can be executed at batch mode invocation or at any time during an interactive session The functions and or commands in this file are executed sequentially Command Line See Popup Command Line Command Registration The process of assigning a command text string and a minimum abbreviation as a synonym for a function A command is registered in the user interface using the AMPLE language Commercial Component Library A set of graphic symbols and simulation models of parts or components that semiconductor vendors manufacture A commercial component library also includes associated parametric data taken from manufacturing specifications Simulation models can be grouped according to some file hierarchy according to some select
112. hysical characteristics of the technology or manufacturing process that you will use to implement your IC design The description of your technology is referred to as the Process You can use the IC Station default Process or you can define your own 2 Auniquely identified CPU task that can run concurrently with other processes on the node Each process runs tasks independently of other shell processes while sharing the same Central Processor Unit CPU Process Data Process data describes the technology design rules and other information about your design Information shared among different cells in one design for example the routing level definitions is also contained in the Process Mentor Graphics Glossary B 1 P 13 J KILIMN OP QIRISITIU Y 27 Process Variable Process variables are reserved AMPLE variables that specify a predefined Process parameter Product Development Process The set of activities tools methods and procedures by which customer expectations are translated into a product This process involves translating customer expectations into system requirements transforming those requirements into a design implementing and testing the design and then transferring the design data to production Product Life Cycle The entire process of product development from product definition through development production enhancement and finally disposal Program 1 set of instr
113. ible You can change the view by dragging the slider in the scroll region by clicking the Select mouse button on one of the stepper arrows or by clicking in the scroll region If you use the vertical scroll bar the view scrolls up or down in the window adjacent to the scroll bar If you use the horizontal scroll bar the view scrolls to the left or right Secondary Entry A secondary entry is an entry that the Design Manager adds to a configuration during a build Secondary entries are added based on the build rules of the primary entries You can set the build rules of primary entries to either include or exclude secondary entries from a configuration See also Build Rules Configuration Entry Primary Entry and Reference State Secondary Parameter Secondary parameters modify or extend the default behavior of the dimensional check operations To modify the behavior of dimensional check operations you include secondary parameters in the operation descriptions Seed This property specifies a relative position within a cell where you can preplace an instance Mentor Graphics Glossary 1 S 5 J KILIMN OP QIRISITIU Y 27 Seed Layer Identifies the seed or device layer that Device Recognition uses to begin its search for instances of the device Device Recognition first searches for a particular shape on the seed layer called a seed shape If the shape is found Device Recognition compares the polygo
114. ile identifiers To mark the string as a single object you must enclose character strings with embedded string delimiters or spaces in quotes Characters Per Inch See Pitch Characters Per Line This is used to specify the line width of the printer With a default pitch of 10 an 80 cpl width corresponds to an 8 inch line Check Box A group of one or more toggle buttons that can be set in any combination Check buttons can appear in a dialog box or in an application window The application usually displays check buttons as small square buttons The visual cue to its selection is a highlighted button C 6 Mentor Graphics Glossary B 1 J KILIMN OP 5 Y 27 Check Button A group of one or more toggle buttons that can be set in any combination Check buttons can appear in a dialog box or in an application s window The application usually displays check buttons as small square buttons The visual cue to its selection is a filled in and or pushed button CheckPlot The combination of printer hardware and print server software that comprise the CheckPlot product CheckPlot Print Server The software that formats renders and outputs text and graphic print jobs to the CheckPlot printer Checkpointing The process of writing a temporary database to disk without giving up your edit reservation and without creating a new version Child A subcomponent of a Transform Component immediatel
115. imarily for scientific and engineering applications F 6 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 1 Anobject that contains names of variables or functions and their values in a specific scope Multiple frames can be linked together to form a frame chain This capability allows the overloading of the same function or variable name in different scopes It also allows some functions to be restricted to certain frames 2 The interior portion of the resize border Framework A collection of software facilities or a set of extensible services that are the foundation for an integrated electronic design automation system The key facilities provided by a framework include common design data management product data management process management and a common user interface Freeze This action copies an object s current sequence version The frozen copy is placed in the same directory and has the same ID as the original but has a new name No new sequence versions can be created for the frozen copy A frozen object is a read only copy that can only be accessed through a frozen reference Freeze Design See Design Latching Freeze File A freeze file is a frozen version file that is temporarily added to a design object s fileset when you freeze a version The file is removed when the version is unfrozen See also Frozen Version Fringe Capacitance Fringe capacitance is
116. ion kernel Also it can contain control statements This file contained within Design Manager also lets you specify where the analog simulator can find the corresponding MODEL and SUBCKT statements that define the semiconductor models and subcircuits These netlist files conform exactly to SPICE syntax except that they can contain parameterized expressions for any of the values Netlistfiles are converted to uppercase and transmitted verbatim to the AccuSim II kernel Network Two or more workstations that share information over a physical interface There are many types of networks Mentor Graphics Glossary B 1 N 3 jJ KILIMN OP QIRISITIU Y 27 Network Computing System The Apollo Network Computing System NCS provides a standard language set of utilities that allow processes to communicate with each other across a network For detailed information about NCS refer to Managing the NCS Location Broker and Network Computing System NCS Reference Network File System A collection of programs that allows users on different systems to share files over the network NFS is both a communications protocol and a collection of software using that protocol NFS lets you treat files on other systems as though they were on your own local disk Network Information System Network Information System A distributed name service that maintains certain files with information about the systems on the network and
117. ion mechanism This manual uses library and commercial component library interchangeably Common User Interface The common and global set of commands keys menus and windows The rules methods and conventions used by all Mentor Graphics applications to communicate with the person using the application Compaction Compaction is the process of minimizing the size of a completed layout Compiled Rules Guide the actions of the Layout Verification system components The Compiled Rules is the in memory version of the Rules File that the IC Environment creates when you load a Rules File from disk into the IC Station Session C 10 Mentor Graphics Glossary B 1 J KILIMN OP 5 Y 7 Complete Transition Path The sequence of one or more transitions involved in going from one state to itself or to another state in a State Machine The conditions in the transition path are the collection of all the conditions on the individual transitions The actions in the transition path are the collection of all the actions on the individual transitions plus the actions of the origin state When tracing the transition path links are resolved to the start state state or transition node to which they refer Component l A container design object comprised of a schematic model a VHDL model and or a symbol model which can represent anything from a simple logical function to a full blown integrated circu
118. ion occurs in a State Machine Actions are statements that modify output flows See also State Transition Condition and Default Actions Block Active Area The active area 1s the area within a session window or the session window itself that receives command input On monochrome monitors the active area is highlighted with a heavier outline around its border On color monitors the color of the border and title bar indicates the active area Active Context Cell The active context cell is the cell that is the editing context for the active window Active Process The active Process is the Process associated with the active context Whenever the active window changes the active Process is reset to the Process of the active context Active Window The window to which all logical user actions are directed That is equivalent to the window in which all the functions and commands through the popup command line menus or dialog boxes are executed Only one window can be active at a time The active window s frame and title if visible are highlighted Actual Flow Net A signal flow net that is connected to a formal flow net using one or more connected formal points See also Flow Net AIX The operating system for RS6000 workstations It is System V based Alarm Window An operating system window that displays messages AMPLE The Mentor Graphics programming language for customizing the user interface AMPLE is a structured proc
119. ircuitry of the component represented by the symbol input and output 3 In IC a property that specifies a name for a logical pin on both an ICgraph cell and its corresponding schematic symbol A pin which can have a name is a logical object that belongs to an instance Objects that make up the pin are defined by the port members in the underlying cell You use pins to make connections to an instance at the same level of the hierarchy When a cell is placed as an instance in another cell all shapes and paths that are part of a port become a single pin in the parent cell A pin is viewed at the symbolic level a port is viewed at the mask level Pin Layer Identifies all of the layers that pins will be located on and the number of pins that Device Recognition will attempt to find for each device instance Pin Name Specifies the name of pins that Device Recognition assigns to recognized device instances Pitch The number of characters per inch cpi Ten pitch Courier prints ten characters per inch Hence ten pitch is wider than twelve pitch type because only ten characters fill a horizontal inch rather than twelve Pixel 1 The smallest element of a display surface that can be independently addressed A pixel is the phosphor dot on the screen of a display Screen size is often given as the number of pixels for example a 1024 x 1024 screen 2 A 400 dpi plotting device has 400 pixels dots in one inch width P 8 Mentor Graphi
120. it The term cell is synonymous with component The graphic symbol and property information depicting a modeling block Property information includes specific information about the modeling block including model name and parameter values A physical commercially packaged semiconductor integrated circuit or discrete semiconductor that performs some electrical function and is used in a printed circuit board or equipment assembly Components can also be called devices An example of a component is the BJT with a part number of 2n2222a Within the context of AccuParts storage concepts a component is a collection of similar part numbers referencing models grouped under a part design object Within the context of System Architect a collection of data objects that together represent an electronic system or part of a system System Architect supports four types of component System Components Transform Components Logic Components and Type Definition Package Components Mentor Graphics Glossary B 1 C 11 J KILIMN OP QIRISITIU Y 27 Component Interface A mechanism for associating model information with a component component interface contains the following e A pin list which includes pin names and associated properties A body property list which includes a list of property names and values owned by the symbol body A model table which includes model names and associated labels o
121. ke a tool within the Design Manager before the tool s actual executable code runs The qualification script gathers and evaluates tool arguments validates tool invocation and enforces workflow policies or procedures if desired See also Termination Script and Tool Viewpoint Quality The degree to which a system component or process meets specified requirements or meets customer expectations Question Box A blocking dialog box that you must respond to by pressing a button before you can continue your work Queue See Print Queue Queue Site A workstation associated with the printer or plotter containing the sys print directory that data is sent to It contains the directory where files to be printed reside Quick Help Provides a brief description about an object such as a menu window or function or describes a particular feature of the application Quick help can appear first when you ask for help from within an application Most quick help message windows have a button that when activated will bring up reference help QuickFault The Mentor Graphics fault simulator QuickGrade The Mentor Graphics fault grader QuickPart Schematic A sheet based model that provides the functionality to the QuickPart compiler Once the QuickPart is compiled the sheet based model in no longer required Q 2 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 QuickPart Table A list of ti
122. l A Mentor Graphics tool that configures component models for simulation Regular Expression Symbolic notation that describes patterns in text Relative Pathname A relative pathname is a pathname that is relative to the MGC working directory The MGC working directory is the value returned by the Design Manager toolkit function get working directory See also Hard Pathname and Soft Pathname Relative Time A time interval such as five minutes 23 seconds See also Absolute Time Release 1 This action makes a complete hierarchical copy of all components references of the latest sequence version of the design object being released The copy includes copies of included design objects the fileset contained in the object and all objects referenced in its attribute file The released copy is placed in a target directory and has the same ID as the Mentor Graphics Glossary B 1 R 5 J KILIMN OP QIRISITIU Y 27 original but has new name You cannot create new sequence versions for the released copy although you can copy it If you want to open and to evolve these design objects you must copy the released configuration to another directory See also Configuration and Configuration Object 2 Tolet up on a mouse button you have pressed Sometimes it is the press that initiates an action at other times it is the release upstroke that initiates the action See also Drag and Press
123. lar set of functionality These symbolic representations are called instances This concept is similar to using symbols on a schematic Your design is separated into functional blocks that can range from a gate to an entire CPU subsystem Symbols are created for each block such as an inverter or register The symbols contain connection points called pins that you connect together with nets Hierarchical Repartitioning ICplan supports hierarchical repartitioning which lets you interactively rearrange your design s hierarchy so that it is more suitable for the layout without having to modify your source schematic Highlight A graphic technique used to show the current selection or the current location of the input focus by making the item stand out on the screen Highlighting is frequently done by reversing the video of the selection or by drawing a red highlight box around the gadget Hit An occurrence of a search request in an online document Hitachi A four key graphic input device that can be moved on its own tablet Hitachi 5 A five key graphic input device that can be moved on its own tablet HML The Hardware Modeling Library HML was a special purpose network server hardware and software system that provided designers with a quick and reliable method of including actual LSI and VLSI components in logic and fault simulation programs of larger circuit designs By using real IC devices as simulation primitives you could avoid th
124. le system navigation tool invocation and design data configuration management For example the Design Manager permits you to copy or move designs keeping references intact You can also specify version levels freeze versions create design configurations release or archive designs among other Design Manager functionality See also Registrar and Design Object Design Object 1 Anobject oriented database object consisting of data and methods to operate on that data Design objects also contain the information that applications need to understand that data This allows applications to be invoked on a design object 2 Inadesign it is an instance net or pin 3 set of files and directories that represents one aspect of a design In the Design Manager these files and directories appear as a single object with a D 8 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 unique icon to represent the object s type When you perform operations on a design object you need not remember which files and directories compose the object The Design Manager treats them as a single object 4 Anencapsulation of the various aspects of a design For example a Design Architect design object can consist of schematics sheets and parts Using the Design Manager a design object provides a single consistent entity that you can copy move and release See also Fileset Type Version Graphics Object
125. lications Data Flow A flow that transfers data on a Context Diagram or Data Flow Diagram There is no semantic difference between a data flow and a control flow A data flow typically represents a signal that transfers data between component nodes See Connector Data Flow Diagram A type of block diagram It is a graphic view of a system or transform that defines the behavior of this system or transform in terms of lower level transforms A Data Flow Diagram DFD consists of a number of connectable elements connected by flows The diagram can also contain annotation blocks The Data Flow Diagram at the top of the hierarchy in the System Component is known as the Top Level Data Flow Diagram Data Model An internal representation of a collection of data used and maintained by an application Data Point An individual measurement that comprises a data set measured data Data Set A collection of similar data points that correspond to the same measurement condition or setup measured data Datasheet A datasheet contains information describing the characteristics of analog components or component models There are two types of datasheets Mentor Graphics Glossary B 1 D 3 J KILIMN OP QIRISITIU Y 27 Model datasheets detail the simulation performance characteristics in AccuSim II of the models of components that Mentor Graphics develops e Manufacturers datasheets detail the electrical ch
126. llowing command at the UNIX shell command line 5 man uuid gen Mentor Graphics Glossary 1 U 3 QIRISITIU Y 27 U 4 Mentor Graphics Glossary B 1 MN OP S TIUIVIWIX Y IZ Glossary V The following terms are described in this section VDD Metafile VREF Vector Device Vtype Vector Element Velocity Verification Verify Two Servers Versatec Plotter Version Version Branch Version Depth Version Depth Mechanism Version Property Version Pruning Versioned Design Object Vertex Verilog Verilog Module Verilog Specification VHDL VHDL Architecture Body VHDL Architecture Station VHDL Entity Declaration VHDL Model VHDL Specification VHSIC Via Instance Via Object View Viewpoint VLSI Mentor Graphics Glossary B 1 V 1 J KILIMN OP QIRISITIU Y 7 VDD Metafile A type of spooled data file The format of this file is based on the VDD rendering model provided in the Falcon Framework See also Spooled Data Vector Device A device that represents graphical data as a set of connected points A line is represented by a series of commands that control pen motion For example the following set of commands draws a line from 100 50 to 0 50 pen up move to 100 50 down move to 0 50 Vector devices such as penplotters generally have visible pens that move Vector Element
127. lossary B 1 G 1 J KILIMN OP QIRISITIU Y 7 Gadget A graphic control that elicits simulation of an action such as pushing a button or moving a slider This small interactive area displays a value or solicits input from the user See also Dialog Box Control and Slider Gate level Model A simulation model that is either a primitive logic gate or composed of primitive logic gates Gateway A device that provides protocol translation in order to let two networks that use different protocols communicate with each another A gateway can provide translation and checking through all seven layers of the ISO model to establish reliable communication among the networks In the Mentor Graphics environment you can configure an HP Apollo workstation as a gateway to allow communication between the systems on a Domain ring network and the systems on an Ethernet See also Bridge and Router GE See Geometry Editing Generated Devices See Device Generator GENIE A Mentor Graphics language used to customize AutoLogic and other tools and allow direct interaction with the synthesis engine Geometry Editing The Geometry Editing GE mode lets you do unrestricted polygon editing doesn t use or maintain the connectivity information and doesn t prevent connectivity or physical design rule errors If you demote a cell to the GE mode from the CE or CBC modes connectivity and correspondence data will be present aft
128. lving design to verify that the design functions according to specification Function Header The first line or lines in a function definition It declares the function name function arguments and data types and consists of six components the function type the function name the function s arguments function argument default values an optional transcript modifier an optional quick help specification and an optional reference help specification It also checks function arguments and ensures that the value declared fails within a specified range Function Key Keys that can be defined by the user or an application See also Key Identifier Mentor Graphics Glossary B 1 F 9 QIRISITIU Y 27 10 Mentor Graphics Glossary 1 J KL MNOP 5 Y Z Glossary The following terms are described in this section Gadget Group seed Gate level Model Grouped Box Gateway Grow GE Guaranteed Specifications Generated Devices GENIE Geometry Editing GFL Ghost Image GLBD Global Global Location Broker Daemon Global Net GMF GN Gothic Font GPR Graphic Input Device Graphic mode Printing Graphical Interface Graphical User Interface Graphics Cursor Graphics Insertion Cursor Graphics MetaFile Graphics Object Graphics PRimitive Grayed Selection Group Group abut Group place Group prio Mentor Graphics G
129. ly used for the X Window System fonts by X11R4 X servers While this format is logically consistent in design across various systems its binary implementation can differ This format is supported in X11R5 Soft Pathname A soft pathname is a pathname that begins with a soft prefix Because a soft pathname must begin with a soft prefix it follows that the initial characters of a soft pathname must be a dollar sign A soft pathname is not in and of itself interoperable See also Absolute Pathname Hard Pathname Soft Pathname and Soft Prefix Soft Prefix A soft prefix is a string that begins with a dollar sign contains one or more capital letters digits or underscore characters A soft prefix precedes all other characters in a pathname and is followed by a slash A soft prefix has an Mentor Graphics Glossary B 1 S 11 J KILIMN OP QIRISITIU Y 27 associated value which can be substituted in its place to produce hard pathname See also Absolute Pathname Hard Pathname and Soft Pathname Softkey A softkey is the textual description of a function key on your keyboard Solaris The newest UNIX based operating system for Sun workstations It is a SysV based operating system Solver A time domain based simulation program Source Document A source document is the file containing the compiled or edited source data of a connectivity model You use this form to view a design The sour
130. ly serves other client workstations A links within a Master tree typically resolve to software physically located within that tree Maximize To enlarge a window to its maximum size which is the size of its parent window or the size of the display Maximize Button A window control button on the upper right corner of the window used to enlarge a window to its maximum size or to restore a maximized window to its previous size See also Window Control Button Mealy State Machine A State Machine that is defined as a sequential network whose output is a function of both the present state and the input condition to the network The state graph for a Mealy State Machine has the output actions associated with the transition between states Memory Caching To store data that has been accessed from an online library in memory on the workstation on which the resource server is running Memory caching speeds up repeat access to library data however it is done at the expense of memory space Mentor Graphics Tree The software tree that contains Mentor Graphics software Menu A list of options that allows you to select the course of action you want to take such as print a report or bring up an application Menu Accelerator Key In the popup and pulldown menus some characters are underlined The underlined character identifies a menu accelerator key Menu accelerator keys Mentor Graphics Glossary B 1 M 5
131. maintained function that lets you change the value of an internal variable by passing one or more arguments for the new value The internal variable cannot be manipulated by the AMPLE assignment operator Internet A worldwide area network that uses the TCP IP protocol The Internet was originally sponsored by the Defense Advanced Research Project Agency DARPA Currently the Network Information Center NIC at the Stanford Research Center distributes and tracks unique IP addresses for Internet sites Internet Protocol A protocol that allows host to host datagram delivery Mentor Graphics Glossary B 1 1 7 J KILIMN OP 5 Y 27 Internetwork Two or more connected networks that might or might not use the same communication protocol For example an HP Apollo ring network and a Sun network connected together with a network gateway form an internetwork Internetwork is also often abbreviated as internet Interoperable Pathname An interoperable pathname is a pathname that leads you to the same or equivalent object within a given context regardless of the workstation you start from on your network Additionally if the pathname leads you to a given object at a given time it will lead you to the same object again at any later time See also Absolute Pathname Hard Pathname Relative Pathname Soft Pathname Soft Prefix and Symbolic Link Intrinsic Capacitance Intrinsic capacitance is the
132. ming constraints that apply to the sheet based model This list provides timing delays setup and hold times and pulse widths for the QuickPart model QuickParts A Mentor Graphics modeling technique that transforms a sheet based component into a component with similar functionality but with pin to pin timing provided by a timing file QuickPath A Mentor Graphics critical path analysis application QuickSim The Mentor Graphics family of simulators which includes the QuickSim II logic simulator the QuickGrade fault grader the QuickFault fault simulator and the SimUI remote simulator interface QuickSim Il The Mentor Graphics digital logic simulator that can simulate and test a design that is referenced by a Design Viewpoint QuickSim II can use the active back annotation object to accurately simulate the layout Mentor Graphics Glossary B 1 Q 3 QIRISITIU Y 27 Q 4 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Glossary R The following terms are described in this section Radio Button Range Raster Device Red Green Blue Reference Reference Handle Reference Help Reference Mode Reference Network Reference Property Reference State Reference Voltage Reference Window Referenced Cell Register A Library Registrar Registration Regular Expression Relative Pathname Relative Time Release Relevel Merge Relevel R
133. mmands Mentor Graphics Glossary B 1 1 5 J KILIMN OP QIRISITIU Y 7 Inst Property A property that lets you assign a unique name to a particular instance of a component model Install An Domain OS program used to install software from an authorized area onto other workstations in the network Instance A copy of a symbol on a schematic sheet An instance is an active reflection of a unique version of a symbol model in the design database A schematic might have several instances of a particular model for example eight 1K resistors or one instance each of many different models An instance references the symbol model of a component for its graphical representation and a functional model of the component for its implementation A schematic might have several instances of a particular component A cell is a named object in the database hierarchy When a cell is added to another cell it becomes a cell instance An instance can be placed or unplaced Each cell has a name but only an instance of the cell has a handle Instance by reference An instance of a previously defined model Multiple EDDMs can be required to fully model the next level of hierarchy if the model is a set of schematic sheets Instance in place An instance whose next level of hierarchy is contained within the instance Instance in place can be used only where there is no model selection and no re use of the component
134. n Within the contexts of System Architect a description of a component from a particular viewpoint Examples are a Context Diagram in a System Component a State Machine in a Transform Component or a type definition package source view in a Type Definition Package Component Viewpoint A design object that contains rules for looking at particular aspects of a design See also Design Viewpoint VLSI Very Large Scale Integration VREF See Reference Voltage Vtype This property specifies the value of the via type defined in the signal_via_cell Process variable V 6 Mentor Graphics Glossary B 1 MN OP S TIUIVIWIX Y 7 Glossary W The following terms are described in this section WAN Waveform Database Weight Wide Area Network Wide Pin Window Window Border Window Control Button Window Decoration Window Frame Window Menu Window Menu Button Window based Application Word Working Directory Workstation Wtype Mentor Graphics Glossary B 1 W 1 J KILIMN OP QIRISITIU Y 27 WAN See Wide Area Network Waveform Database A design object that records simulation data in a compact form for later replay or to be used as stimulus in future analysis Each waveform in a database represents a stream or series of simulation events and calculations WDB See Waveform Database Weight The degree of print density or darkness o
135. n which means that text mode printing is potentially more than 200 times faster than graphic mode printing TFNF A netlist format containing component net and property definitions Threshold A boundary defining the point at which some change in the output occurs when the input crosses this boundary The output behaves differently depending on which side of the boundary the input falls TimeBase The Mentor Graphics timing equation calculator Times A proportionally spaced serif typeface that can be printed on a laser printer Timing Constraints A set of constraints that govern how AutoLogic optimizes the circuit for timing Mentor Graphics Glossary B 1 T 5 J KILIMN OP QIRISITIU Y 7 Timing Model Vendor supplied information that describes the timing and functionality of the technology primitives Timing Optimization The process of altering a design s structure to improve performance in order to meet specific timing requirements Title An element within a diagram that displays the name of the in which this diagram view is contained Title Area The bar across the top of a window that displays the window s title Title Bar The bar across the top of a window that displays the window s title Toggle To switch back and forth between two states Toggle Button See Check Button Tool A tool is software created for a specific task An example of a Mentor Graphics tool is
136. n Management System User Interface User Time Unit User Tree User Unit Userware Utility UUCP UUID File Mentor Graphics Glossary B 1 U 1 J KILIMN OP QIRISITIU Y 7 UIMS See User Information Management System Universe The total area available for a diagram This can also be referred to as graphic universe Universal Comment A universal comment is comprised of text that follows a double slash in a Rules File You can write universal comments anywhere in a Rules File Unregister A Library Server To remove information about a particular online library from the network server database Library servers are the only servers that are registered or unregistered User Account A personal account defined by the system administrator One user account usually exists for each person or persona authorized to use the system User Information Management System The common and global set of commands keys menus and windows Also the environment that allows seamless modification to the user interface User Interface See Common User Interface User Time Unit Units of measure chosen by the user of an analysis tool A user defined period of time on which all time related digital simulator commands are based except where noted otherwise The default user time unit is 1 nanosecond The Set User Scale Time command sets the value of a user time unit User Tree A User tree is a Mentor Graphi
137. n User Interface software action Exit Link A symbol on a child State Transition Diagram that connects to the parent composite state in the parent STD See also Transition Node EXPAND Mentor Graphics 8 application that processes hierarchical information from the design database and creates a design file with a erel extension The design file is a binary netlist that describes component interconnections of a circuit and also contains other information required by the application for which the netlist is created Explicit Clock A flow on a Data Flow Diagram that is used as a clock signal by a VHDL process See also Clocking Schemes Expression A mathematical or Boolean statement that must be evaluated before its value is known The use of expressions allows parameters to be changed easily Extent Box An extent box is a transparent graphical image that the mouse draws The extent box is displayed as a dynamic rectangle that represents the outer boundaries of an object When you move an object a window for example a rectangle moves with the mouse pointer while the object remains stationary When you release the mouse button the object moves to the location where you placed the dynamic rectangle E 6 Mentor Graphics Glossary B 1 jJ KILIMN OP QIRISITIU Y 7 Extent Generation Operation Extent generation operations create a derived polygon layer consisting of rectangles that repre
138. nal path node or wire that connects two or more pins Also known as a signal network or signal net Analogous to a wire or trace in a physical circuit At a higher level a net is a logical representation of a set of device ports and pins that are all physically connected in the layout by paths Net Parameter The extracted mask mode parasitic values are called net parameters which are stored by Mask PEX in the Mask Results Database Net Segment A straight uninterrupted portion of a net with a vertex at each end N 2 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Net This property specifies the name of port style when placing ports attached to particular net Net comp count This property specifies the number of discrete port locations for a net in a cell Net comp place This property specifies one or more relative locations for preplacement of ports on a given net Netlist An ASCII representation of a circuit that lists of all the parts in a design and shows how they are interconnected Generally used as input to simulators or wire router programs Netlister A program that produces a file netlist that describes a design In IC the Netlister is a set of functionality that can create either an LSIM or an HSPICE netlist from within either Direct or Mask PEX Netlistfile Same as modelfile except that it is appended verbatim to the netlist sent to the simulat
139. nctionality including data and actions that is common across applications For example the functions and builtins that comprise the printing routines are in a printing toolkit Tools Window The tools window is a bounded area bordered by a rectangular box within which are displayed as icons all the tools that can be invoked from the Design Manager session See also Toolbox Tool Invocation and Tool Viewpoint Top Checking Mode In the TOP checking mode ICrules DRC analyzes all objects that have an internal aspect in the top level cell and all objects that have an external aspect from cells that are instantiated in the top level cell Top down Design The process of designing a system by identifying its major components decomposing them into lower level components and repeating the process until the desired level of detail is achieved typically using a hardware description language such as VHDL In Mentor Graphics this definition is specifically applied to the top down design of ASIC FPGA and CPLD circuits Mentor Graphics Glossary B 1 T 7 J KILIMN OP QIRISITIU Y 27 Top level Cell Database Contains the cell layout connectivity LVS results and DRC results The IC Environment stores the Design Rule Checking DRC results that you generate for any cell in the hierarchy of the top level cell only in the top level cell database You can only edit the cell database when the cell is in the active e
140. nd VHDL generation Cursor See Mouse Pointer and Insertion Cursor Curve fitting The process of matching the curves from a simulated model to measured data points Mentor Graphics uses optimization techniques to extract the model parameters that produce the best fit of curves to measured data Custom Clock A user defined set of clocks C 20 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Glossary D The following terms are described in this section Daemon Data Data Flow Data Flow Diagram Data Model Data Point Data Set Datasheet Datasheet Value Data System Data Transform Data Type DCOP DDMS DDP Decomposition Default Default Actions Block Default Build Rules Default printer name Delete Demand Loading Demoting Cells Derived Edge Layer Derived Error Layer Derived Polygon Layer Descender Design Design Architect Design Configuration Rules Design Cycle Mentor Graphics Glossary B 1 Design Data Configuration Management Design Database Design Dataport Design Decomposition Design Entity Design Evaluation Design Flattening Design Hierarchy Design Instance Design Latching Design Manager Design Object Design Root Design Traverser Design Unit Design Viewpoint Design Rule Checking Design Viewpoint Editor Destination Destination Technology Device Device Driver Device Generator Device Recognition Device Recognition Template DFA
141. nd provides more information Reference Mode When the references of a design object are displayed in a navigator window the navigator window is in reference mode You are only in reference mode after you have explored the references of a design object by using the Explore References command When you are in reference mode the navigator title bar displays the absolute pathname of the design object whose references are displayed in the navigator window followed by a indicating reference navigation See also Contents Mode Reference Network A reference network is the set of design objects that are related through references The reference network of a design object includes the design object itself and all other design objects that can be reached by traversing references A reference network is analogous to the design object s containment hierarchy Using the Design Manager navigator you can traverse the reference network one path at a time When building configurations the Design Manager can traverse the entire reference network of a design object in one operation See also Reference Reference Handle and Reference Property Reference Property A reference property is a name value pair that contains information about the reference The creating tool property identifies the tool that owns the reference Reference properties propagate with the reference from the current version to later versions until they are explicitly changed or
142. nformation about the design object version Version properties do not propagate from the current Mentor Graphics Glossary B 1 V 3 QIRISITIU Y 27 version forward See also Object Property Property Reference Property and Version Version Pruning Version pruning is the deletion of a design object s previous versions based on the specified version depth Version pruning occurs when a new version is created and old versions exist that exceed the version depth See also Version Version Depth and Version Property Versioned Design Object A versioned design object is a design object that can have multiple versions See also Version Version Depth and Version Property Vertex A beginning point ending point turn or junction in a net segment VHDL VHDL stands for VHSIC Very High Speed Integrated Circuit Hardware Description Language VHDL is a design and modeling language compliant with the IEEE standards 1076 1987 and 1076 1993 which was specifically created to describe in machine and human readable form the organization and function of digital hardware systems circuit boards and components See also HDL and Verilog VHDL Architecture Body Declares the items available inside a design entity and specifies the relationships between inputs and outputs An architecture body describes the organization and operations performed inside the design entity Within System Architect
143. ng of application data from and to various persistent media D 4 Mentor Graphics Glossary B 1 J KILIMN OP 5 Y 7 The DDMS is a set of classes and their member functions supporting tool and data encapsulation data model definition and storage and design data management The fundamental concepts supported by these functions include persistence typed objects object identification versioning configurations transparent referencing of persistent objects and concurrency control DDP See Design Dataport Decomposition The process of substituting generic netlists for each technology specific primitive Default A value assigned to the function argument by an application when the user does not supply a specific choice Default Actions Block The default actions performed by a synchronous State Machine when there is a transition from one state to another Default Build Rules The default build rules are the rules used to build a configuration if you do not specify build rules for a primary entry The default build rules include all design objects in both the containment hierarchy and reference network See also Build Rules Default printer name An environment variable that is the printer name Delete To remove Notepad text from the text window and discard it Deleted text can be recovered with Undo Demand Loading The process of postponing creation of a user interface object s
144. ns that are either nearby or overlapping the seed shape on other layers in order to find a complete match to the device template Select Filter The select filter in ICgraph establishes the criteria for object selection Select Mouse Button The mouse button used to make a selection By default the select button is the left mouse button on a three or two button mouse Selected Text Highlighted text that can be manipulated as a unit Selection Identification of certain elements or design objects for subsequent operations Selection Cursor See Location Cursor SEPARATE Specifies whether a new shell is created when you invoke an application Separate Process Server An External Rendering Interface server that is not directly bound to a specific application but can be accessed from across the network by applications that use this server type Sequence Version A non decreasing integer associated with a design object Sequence versions are used to detect when design objects have changed Serif A font name that means literally points A decorative line or tail is on the ends of the lines forming a letter Usually on the lower half of a letter serifs small projections at their extremities have been called feet or curlicues S 6 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Server 1 A background process that services client processes The BOLD online information sys
145. ntaining only connectivity not graphical data You can simulate or optimize a simple connectivity model This object is sometimes called an EDDM netlist Mentor Graphics Glossary 1 6 9 J KILIMN OP QIRISITIU Y 27 Simple Copy A clone copy of a document window Unlike a HyperDriver clone there is no relationship between the original document and a simple copy of it Simple State A symbol on a State Transition Diagram that represents a state that has no child state machine See also Composite State Simulation Model A set of model parameters or an equivalent circuit that when simulated describes the performance characteristics for a physical component Mentor Graphics implements analog simulation models as AccuSim II MODEL primitive statements SUBCKT statements in ASCII format The term simulation model generically refers to both primitives and macromodels AccuSim II extracts ASCII analog simulation models from the AccuParts library database when you initiate a simulation run or when you select the Design Architect gt Libraries gt MGC Analog Libraries gt Utilities gt View Edit Model AccuSim gt File gt AccuParts gt View Edit Model menu items Simulator A simulation kernel such as QuickSim II or AccuSim II combined with a graphical user interface environment such as SimView The kernel s act as the back end of the simulator while SimView acts as the front en
146. ntrol Panel Proximity Search An advanced full text searching operation proximity search allows users to search for String A within a specified number of characters of String B P 16 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Pruning is automatic deletion of design object versions that exist beyond the current version depth See also Version Version Depth and Version Depth Mechanism Ptxt Text in a standard Notepad window Pulldown Menu A menu not normally visible until you access it by pointing to an item on the menu bar and pulling down the menu with the Select mouse button Pulldown menus are associated with menu bars or in some cases certain buttons See also Popup Menu and Palette Mentor Graphics Glossary B 1 P 17 QIRISITIU Y 27 18 Mentor Graphics Glossary 1 S Y 7 Glossary Q The following terms are described in this section Qualification Script Quality Question Box Queue Queue Site Quick Help QuickFault QuickGrade QuickPart Schematic QuickPart Table QuickParts QuickPath QuickSim QuickSim II Mentor Graphics Glossary B 1 Q 1 J KILIMN OP QIRISITIU Y 27 Qualification Script A qualification script is a required AMPLE script that runs when you invo
147. o known as an exclusive lock because only one application can write lock a design object and when a design object is write locked no other application can lock it Logical Event Artificial events generated by the Common User Interface These are typically AMPLE functions or builtins Logical Information The logical information consists of connectivity data and device or cell placement information Logical Key Name A key name that maps to actual key names on different workstations For example MenuBar maps to F0 on HP Apollo workstations and F10 on Sun workstations Logical Page Number The number that appears on the page In INFORM documents examples of logical page numbers include iii 3 8 and Index 2 L 6 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Logical Transcript A transcript of logical events such as AMPLE function calls See also Physical Transcript Logic Component The Logic Component contains generated VHDL that defines an instantiated logic function It can also optionally contain an optimized EDDM netlist and a Design Architect schematic symbol See Logic Instance Logic Instance A component node on a Data Flow Diagram that instantiates an AutoLogic LogicLib function See Transform Instance System Instance and Logic Component LSB The acronym for least significant bit When using this term with Analog to Digital and Digital to Analog Converters one LS
148. objects Mentor Graphics Glossary B 1 P 9 J KILIMN OP QIRISITIU Y 7 Polygon Containment Determines whether dimensional check operations will either use polygon containment criteria or modify the criteria to include coincident edges in the dimensional measurements Polygon Measurement Operation Polygon measurement operations select polygons that meet specified measurement requirements Polygon Topological Operation Polygon Topological operations analyze the input polygons of two different layers to locate portions of polygons that have specific relations to each other Pop The act of shuffling the order of overlapping windows For example a hidden or partially hidden window can be popped to the top of the stack of windows for viewing Popup Command Line A one line area that appears when you press the CMD key or start typing text in an area not designed for text entry A popup command line indicates that the application is ready to accept your function call or command Popup Menu A menu that provides no visual cue to its presence but pops up when you press the Menu mouse button Popup menus are associated with a particular area of the workspace such as an application window Port A connection point to a pin and a symbol The port serves as a place holder to inter hierarchy connection Used to mark a net as making a connection external to the schematic and corresponds to the pins on the sym
149. odel templates Modelfile 1 A text file containing statements required by the AccuSim II server in AccuSim The modelfile contains parameters or subcircuits needed to define component simulation models and active components and can also contain various control statements This file is searched for MODEL and SUBCKT definitions only M 10 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 2 Modelfile property specifies one or more pathnames to text files containing PLD programmable logic device memory or analog device information More specifically e State of a memory device Format of the state descriptions varies with the vendor of the software model e Fuse map of a PLD JEDEC file format e Data Initialization File of a Memory Table Model The Data Initialization File is an ASCII file that defines the contents of the memory array associated with a Memory Table model Modeling The process of describing the behavior of a component generally accomplished by combining primitives as with a sheet based component or by using a behavioral modeling language as with BLMs Modeling Block A high level abstraction of a system function ranging from basic arithmetic frequency domain time domain and logic functions Modeling blocks comprise the System Modeling Blocks library Model View A user editable or source view of a System Architect component that specifies a
150. of the product life cycle Requirement View A structured document produced by the System Architect Requirement View editor The document that defines in some fashion the customer requirements Each system can have one Requirement View See also Requirement List Requirement View Element The elements used to identify requirements in the Requirement View Resident Menu A static menu that remains visible for the life of the window unless you choose to hide it Menu bars and palettes are resident menus Resize To change the height or width of a window or graphic object See also Grow Resize Border The portion of the frame that surrounds an application window and is used to change the height or width of the window Resizing Pointer A mouse pointer shape indicating the direction in which the window is changing size Resolution For a given raster device the number of dots or pixels in a specified width A typical monochrome screen display has 100 pixels per inch so its resolution is 100 dpi A typical laser printer has 300 pixels per inch so it has a resolution of 300 dpi In this example because the laser printer has more pixels in the same area it has a higher resolution See also Pixel Resource Server A resource server is a BOLD server that manages traffic to and from the physical device on which the online libraries reside If your libraries are on CD ROM discs the resource server manages the CD ROM disk drive If your libra
151. ogic also serves as a technology mapping tool by giving you the ability to map a netlist from one technology to another AutoLogic VHDL An option to AutoLogic and the System 1076 Compiler that accepts the IEEE 1076 standard Very High Speed Integrated Circuit Hardware Description Language VHDL as a primary input and synthesizes logic designs at the register transfer level of abstraction AutoLogic VHDL is technology independent which allows you to capture simulate and synthesize the entire design before performing any technology mapping When your design work is complete you can realize your logic in any combination of ASIC PLD and FPGA implementations by using AutoLogic for technology dependent optimization and implementation Mentor Graphics Glossary B 1 7 QIRISITIU Y 7 Automated Layout The process of creating an IC by placing standard cells into a layout and performing automatic routing between the blocks or cells to generate an IC layout from schematics or from netlist information Automounter A daemon that automatically and transparently mounts an NFS file system as needed The daemon monitors attempts to access directories that are associated with an automount map along with any directories or files that reside under those directories Auxiliary Layer Identifies a layer that contains the shapes that form an important part of a device instance Auxiliary Operation
152. omprised See also Fileset and Design Object File Transfer Protocol A protocol for copying files between hosts FTP uses TCP IP as underlying protocols Fileset A fileset is the combination of files and directories that compose that object The files hold either design data or metadata which is data that describes the design object The directory can contain other files or design objects The Design Manager treats the entire fileset as a single object When you use the Design Manager to move copy or delete a design object that object s entire fileset is moved copied or deleted See also Design Object Fill Page The graphics object scales or magnifies to fill at most one page width Filter Removes edge pairs based on orientation projection connectivity polygon membership and non intersection criteria from the edges that are analyzed First Cut Panel A Control Panel which has been created from a State Machine description which has been not been modified or changed in any way Also referred to as initial panel Mentor Graphics Glossary B 1 F 3 J KILIMN OP QIRISITIU Y 7 Flat Checking Mode In the FLAT checking mode ICrules DRC analyzes your entire design from the top level cell to the bottom of the cell hierarchy Flat Design A design evaluated down to its primitive level with all intermediate hierarchy removed Flat Layout Flat layout contains only mask layout data You g
153. onent that acts as a unit to perform a specific function Example of devices are printers hard disk drives cartridge tape drives and CD ROM drives Device Driver A program that controls the flow of information to and from a hardware device D 10 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Device Generator Device Generators are AMPLE userware programs written by the customer that allow the user to create and place layout devices such as transistors resistors capacitors paths gates and more complex cells Device Generators allow you to build nearly alike repeated devices where each placement can have unique parameters For example you can have a generic transistor Device Generator but place each occurrence with unique width and length values Generated Devices are similar to traditional cells in most ways however traditional cells maintain a graphical template that s used to produce each instance of the cell All instances of a cell are identical to each other and edits to the cell template are automatically reflected in all instances of the cell Devices do not maintain a graphical template Device Recognition Device Recognition analyzes your design s layout geometries to recognize and classify device instances It compares the layout geometries to device templates that are stored in the Rules File When it finds a group of polygons that matches a device template it notes
154. ont Library See Font Family Font Path See Falcon Font Path and X Windows Font Path Mentor Graphics Glossary B 1 F 5 J KILIMN OP QIRISITIU Y 27 Font Size See Point Size Footer Text that repeats at the bottom of each page of a multi page document Foreign Instance A component node on a Data Flow Diagram that instantiates a model that was not created by System Architect and is therefore not within an SDS component for example user written VHDL or Verilog models gate level VHDL models created by synthesis or DSP Station generated VHDL A port interface entity must exist for the referenced model as a VHDL entity or Verilog Module See also Transform Instance System Instance and Logic Instance Form See Dialog Box Formal Flow A control or data flow associated with a System Instance Logic Instance or Foreign Instance A formal flow connects a system or logic instance to a formal flow which can be connected to other control or data flows on a Data Flow Diagram Formal Point An element on a Data Flow Diagram that represents a connection to the formal flows associated with a Logic Instance System Instance or Foreign Instance Format A code that goes into a cell affecting how the cell is displayed Formats can include cell contents justification currency formats date and time formats and so on FORTRAN A high level programming language developed during the 1960s and used pr
155. ossary B 1 Font Size Footer Foreign Instance Form Formal Flow Formal Point Format FORTRAN Frame Framework Freeze Freeze Design Freeze File Fringe Capacitance Front End Front End Design Frozen Reference Frozen Version Fsck FTP Ftxt Full Custom Layout Full Text Search Index Function Functional Decomposition Functional Model Functional Primitive Functional Test Function Header Function Key J KILIMN OP QIRISITIU Y 27 Face A specific weight or slant of a font family which shares the basic style of that family and includes a variety of sizes See also Bold Italic and Standard Falcon Font Path A path whose leading elements locate a directory and whose leaf gives the file prefix for a Falcon font When you add a file suffix such as bdf or snf to the prefix you get the name of a font file Falcon Framework Mentor Graphics framework of an object oriented core technology linking together in dynamic relationships a Motif compliant Common User Interface a design database management system a design management environment a decision support system online documentation and an advanced multi purpose programming language This framework is the foundation for bringing design application tools together into an advanced architecture with the powers of concurrent multiple viewpoints acting on a common database plus powerful programming capabilities for organizing and con
156. ouse pointer shape that symbolizes the passage of time and indicates that the application is busy performing an operation You cannot interact with an application while the mouse pointer remains in the shape of an hourglass HP Penplotter A penplotter manufactured by Hewlett Packard Inc HP penplotters range in size from desktop A B size models to standup models that accept E size paper and plot Mentor Graphics Glossary B 1 H 5 J KILIMN OP QIRISITIU Y 7 with up to 8 different colored pens Mentor Graphics supports a very specific subset of HP penplotters HP UX The Hewlett Packard UNIX based operating system that runs on the HP Series 700 and 800 workstations It is System V based Human Interface A common screen layout and menu structure used in all pre V8 Mentor Graphics applications that makes them easy to learn and remember HI also included a set of commands common to all Pre V8 Mentor Graphics applications Hyperbutton A defined area in an online document that performs an action when activated by a BOLD Browser user Hyperdestination The destination of a hypertext link hyperdestination is a defined location in online document If BOLD Browser users activate a hypersource they are taken to its associated hyperdestination HyperDriver Copy A clone copy of a document window that can serve as a navigational control window Users can click on a hypertext link in the HyperDriver
157. p file format output by HP Apollo monochrome nodes to support screen images Graphics Object A term for a group of data A single graphics object can be a single file such as a text file or it can be many files that reside in a single directory such as a design that includes schematic sheets symbols attribute files version history design G 4 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 viewpoints and other design objects In the printing environment a graphics object is any file or group of files that make up a single printable entity Graphics PRimitive The standard bitmap file format that is output by HP Apollo color displays to support screen images Grayed Selection See Dimmed Selection Group 1 A control that tells AutoLogic to create a parent hierarchical block and include objects with that group name in it 2 A collection of objects Making and operating on groups can speed tasks that process a large number of similar objects Group abut This property prohibits the Placer from leaving gaps between adjacent cells for routing feedthrus it also prohibits the Sautoplace standard cells function from changing the placement of abutting cells Group place This property specifies a relative position within a cell where you can preplace an instance group Group prio This property specifies the routing priority given to the nets attached to the instances in an ins
158. page document Help Key A special purpose key on some keyboards used to display context sensitive help Help Mode A term used to describe a BOLD Browser that has been started with the as help switch A BOLD Browser running in help mode services a user s requests for reference help Helvetica Font A proportionally spaced sans serif font family that can be printed on a laser printer Heterogeneous Network A network comprised of more than one type of system workstation with each system manufactured by a different company using a different type of processor and or operating system For example a network that contains HP Apollo Sun SPARC and HP Series 700 and 800 systems is a heterogeneous network HI HI was the V7 x human interface language See Human Interface Hierarchical Block A component or section of the design that can include instances of primitives or other hierarchical blocks Hierarchical Decomposition A method of designing a system by breaking it down into its components through a series of top down refinements Also known as Functional Decomposition Hierarchical Design A design that contains different levels of abstraction that is a design that contains components that in turn contain other components Mentor Graphics Glossary B 1 H 3 J KILIMN OP QIRISITIU Y 7 Hierarchical Layout Hierarchical layout contains symbolic representations of mask data for a particu
159. performs the action whether performed by a part developer or QA 2 Sometimes test and verification are combined in one step 3 Test and check have similar meanings but test is preferred to distinguish it from other uses of check as in DA 4 the engineers Ken would like test rather than check used in our UI such as menu selections as well as documentation Test Vector Generation Test vector generation is the process of creating test vectors which are the electronic signals that you use to verify the operation of a design after it has been manufactured T 4 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Text Entry See Entry Box Text Insertion Cursor See Insertion Cursor Text Support Subsystem A file format output by Mentor Graphics workstations in support of the Write Document or Print commands in DOC scanned images produced by ScanED or PicED files containing bitmap text Text Window The area of the screen within which Notepad can manipulate text You can recognize when you are within a Notepad window by the shape of the graphic pointer Text mode Printing In this print mode the information is sent to the printer as a string of bytes Each byte of information is interpreted as one of 256 extended ASCII characters and printed as that character Each text mode character can be equivalent to as many as 216 bytes of graphic mode print informatio
160. proportional to the perimeter of the path conduction geometry Front End A user interface that provides a graphical environment in which the user controls the setup running and viewing of electronic design data In the case of the Continuum simulator SimView provides the front end for a simulation The term front end presupposes there is a which refers to a simulation kernel Mentor Graphics Glossary B 1 F 7 J KILIMN OP QIRISITIU Y 27 Together the front end in the form of the graphical user interface and the back end in the form of a simulation kernel constitute a mixed signal simulator Front End Design Front end design is the process of creating the logic source for your design The logic source can be as simple as a paper copy of the design or it can originate from many different electronic sources Frozen Reference A read only reference that refers to a frozen copy of the referenced object Frozen Version A frozen version is a version of a design object that cannot be deleted by the version depth mechanism You use frozen versions to save a particular version See also Version and Version Depth Mechanism Fsck A UNIX utility that verifies and fixes problems found on a file system Only the system manager should run fsck as root FTP See File Transfer Protocol Ftxt Text in an enhanced Notepad window Full Custom Layout Full custom or handcrafte
161. pt is an optional AMPLE script that runs in the Design Manager session after the design tool has terminated This script performs cleanup functions required by the design tool See also Qualification Script and Tool Viewpoint Test When you test you obtain some type of output that is test results from the object under test Mentor Graphics Glossary B 1 T 3 J KILIMN OP QIRISITIU Y 27 When you verify you compare these results with a known good set of data This comparison can be manual or automated The known good data can be in the form of a data book a set of golden results and so forth Example 1 testing a simulation model A component can be tested on a schematic by running a simulation program such as QuickSim with a stimulus file Simulation results might be generated The verification can consist of running a script that compares the simulation results with a set of golden test results Example 2 testing hardware An IC can be tested by running a set of stimulus files against the hardware on Automated Test Equipment ATE or simulator equipment The ATE can have a set of golden results The verification might consist of looking at the results to see if output of the simulator matches the device Additional notes 1 The distinction between test and verify is not related to methodology where it occurs in the development process This distinction is also not related who
162. que name of a modeling block that identifies the subtype of the schematic component and defines a set of data either SUBCKT or MODEL You can refer to this data by making the SPICE element point to it via the Model property This data can be in a file by itself or in a file containing other similar data Model Parameter Numerical values you supply to AccuSim II through the values for parameter specific properties on a System Modeling Block Model parameters define the numerical behavior of a modeling block within the boundary of that block s functionality See also Discrete Model Parameter and Macromodel Model Parameter Model Property A property conveying the model name of the modeling block This model name points to a corresponding SUBCKT MODEL name in the netlist A modelfile ASCII text contains the contents of the subcircuit or model Modelfiles can be either user defined or precharacterized as in the case of AccuParts and System Modeling Blocks and stored in a database An example of the value of the Model property on a four input Digital to Analog Converter is DTOA4 Model Registration A method of associating functional and non functional models with a component Model Template A generic model and the method or heuristics to generate from datasheet or measurement information the model parameter values for a specific commercial component There are two types of model templates AccuSim II primitive templates and macrom
163. r A model table that includes one entry per model net mappings and multiple labels per entry Component Interface Browser The Mentor Graphics Component Interface Browser CIB is an application for viewing and editing a component interface Component Modeling The process of generating through modeling techniques simulation models of semiconductor components for board level simulation These modeling techniques can involve the process of extracting model parameters from semiconductor manufacturers published datasheets or from the measured electrical characteristics of a particular component type Component Node A transform instance system instance logic instance or foreign instance on a Data Flow Diagram or a system symbol on a Context Diagram A connectable element that represents a component See also System Component Transform Component Logic Component and Node Component Sample A physical device from a specific semiconductor manufacturer Mentor Graphics measures component samples to obtain data for the model development process C 12 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Component Symbol A design object that contains the graphical and electrical representation s of the component A symbol consists of a graphical symbol body symbol pins symbol pin properties and symbol body properties Symbols are created by SYMED Composite State A symbol on a State Tr
164. r library and that can also contain other cell libraries Cell Reference A cell address within a formula or as an argument to a function In the formula A1 Al isa cell reference indicating that the cell containing that formula will derive its value from cell A1 Cell Reservation To edit a cell you must reserve the cell for edit which coordinates access to cells in the database by multiple users When you reserve a cell others have only read access to it Mentor Graphics Glossary 1 C 5 QIRISITIU Y 7 Cell View cell view is the term used to describe the set of BOLD server environments cells currently accessible from your workstation CGM See Computer Graphics Metafile Character A symbol or mark constituting one element of a font For example the letter A is a character Character Set A collection of symbols The symbols contained in character sets are used for various printing applications Typically character sets are composed of the alphabet the numbers zero through nine and an assortment of other symbols such as the dollar sign and the ampersand Character String A set of alphanumeric or other characters that form an object name word or group of words String delimiters include the space character to separate commands and command arguments the semicolon to concatenate commands and the slash to break or concatenate strings of directory and f
165. raphics Glossary B 1 J KL MN OP 5 Y Z Glossary The following terms are described in this section Object Object Property Oblique Offpage Connector Offset One layer Boolean Online Library Online Retrieval Opamp Open Open Software Foundation OpenDoor Program Operating System Optimization Options Box Options Dialog Box Orientation Origin Original Layer OS OSF Output Capacitance Output Setup Overflow Mentor Graphics Glossary 1 O 1 J KILIMN OP QIRISITIU Y 7 Object ICgraph objects are either physical or logical A physical object is a set of geometric layout shapes A logical object consists of a group of descriptive information that is not directly represented in the physical layout You can create or change logical objects by importing either schematic or netlist data into your IC Station design See also Graphics Object Object Property An object property is a name and value pair that stores user or tool defined information about the design object Object properties are versioned to reflect differences as the design object evolves but they propagate forward from the current version to later versions until they are explicitly changed or deleted in the current version See also Property Reference Property and Version Property Oblique See Italic Offpage Connector A component placed on the end of a ne
166. rder to print it Trash Window The tools window is a bounded area bordered by a rectangular box within which are displayed design objects that have been dragged to the trash can When the trash is emptied this window becomes empty indicating that the objects have been permanently deleted Travel Log A list of previously viewed pages BOLD Browser users can use the travel log to return to previously viewed pages A travel log is kept for each document window open in the BOLD Browser T 10 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 True Scale The actual size of the illustration or graphic A graphic plotted at true scale is plotted at 1x TSS See Text Support Subsystem TWM See Tab Window Manager Two layer Boolean Two layer Boolean operations perform simple Boolean logic operations on both original and derived layers in order to generate a derived polygon layer Two phase Clock A single set of two related clocks of the same frequency Type A description of the attributes of a design object or tool viewpoint as the attributes exist in the Design Manager Type information includes the filename extensions for the design object s fileset and the icon that the Design Manager uses to display the object See also Design Object Type Definition A VHDL type definition This defines the structure and possible values of a type with a specified name Type definitions are containe
167. ries Mentor Graphics Glossary B 1 R 7 J KILIMN OP QIRISITIU Y 27 reside on a hard disk the resource server manages the individual file that contains the library Restore 1 Toreturn an icon or minimized window to its original state 2 The action of taking data off backup media and placing it on a workstation s hard drive Restructuring Nets Restructuring nets is the process of attempting to connect together all objects associated with a net either through other objects or through overflows Retargetable Entry A retargetable entry is a configuration entry that can be released or copied to a separate location other than the location specified for the release or copy operation An entry is retargetable if its parent container is not part of the configuration See also Configuration Entry Revert Reverting is the process of making the previous version of a design object current by deleting the current version See also Version Versioned Design Object and Version Depth Mechanism Rexd The remote execution daemon that controls remote processes RGB See Red Green Blue Rise Fall delay A property of a simulation model that determines the delay between an input change and the corresponding output transition The rise low to high voltage transition or fall high to low voltage transition time can be specified independently This method more closely approximates the actual timing p
168. ronize Two Network Servers To force a network server database to be identical with another network server database Synonym Names or actions that are equivalent to each other For example an instance with the pathname I 2 1 I 2 MP might also be recognized by the synonym Q1 Also a stroke a particular motion on a touchpad mouse or graphic tablet that can be defined to represent a command can be given several synonyms slight variations on the basic stroke so that the command works for different users Syntax The rules governing the structure of a language and its expressions Syntax is the way in which you must type the function or command on the popup command line in order for it to correctly call the underlying function This structure allows S 18 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 verification of the relationships between symbols identifiers and references within statements Synthesis The automatic generation of ASIC FPGA or PLD designs circuits from VHDL descriptions text System Something that performs a specific function or set of functions with defined inputs and outputs Typically for System Architect a self contained electronic subsystem See Control System and Data System System 1076 The Mentor Graphics design and simulation application for IEEE Standard 1076 VHDL models System Architect The Mentor Graphics design capture application for Top
169. routing Each routing layer has a corresponding blockage layer Blockages prohibit routing in the horizontal and or vertical direction and can prohibit the placement of vias in the region covered by the blockage shape A blockage layer can be a routing layer with an external aspect when the blockage is a lower level cell in the hierarchy Blocking Dialog Box A dialog box to which you must respond before you can do other work dialog boxes do not support mid command freedom and that prompts you for function arguments See also Question Box and Message Box Body Capacitance Body capacitance is proportional to the area of the path conduction geometry Bold A heavier weight of characters that appear darker than standard characters B 4 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 BOLD A tool for building viewing annotating and printing online documentation Beginning with V8 x all Mentor Graphics product documentation is available online and accessed through the BOLD product See also BOLD Browser BOLD Administrator The BOLD Administrator is the online information tool used to make online libraries available to BOLD Browser users BOLD Browser The Mentor Graphics application that lets you view documentation online In terms of the BOLD Administrator the BOLD Browser initiates a Client Process BOLD Daemon A process that must be running on a workstation before a BOLD server
170. s a broad range of plotting devices including electrostatic plotters Mentor Graphics supports a very specific subset of the Versatec product line Version A single saved state of a design object When you change a design object s data and save it to disk you create a new version of the design object See also Version Depth Versioned Design Object Version Depth Mechanism and Version Property Version Branch Version branching refers to the version model which allows multiple versions to be derived from a single version In version models that do not allow version branching every version except for the initial version derives from exactly one version See also Version Depth Versioned Design Object Version Depth Mechanism and Version Property Version Depth The number of versions that a design object keeps of itself You can the set version depth from one to infinity See also Version Versioned Design Object and Version Depth Mechanism Version Depth Mechanism The version depth mechanism deletes versions that are beyond the default version depth for a design object For example if the default version depth for a design object is 2 the version depth mechanism allows for only two versions to be kept As the design object evolves versions beyond 2 are deleted except for those that are frozen See also Version Version Depth and Versioned Design Object Version Property A version property is a name and value pair that stores i
171. s design evaluation is the design viewpoint Design evaluation occurs as needed by downstream applications Design Flattening The process of looking down through hierarchical components to the bottom primitive level of the design and removing all hierarchical information Some downstream tools require this flattened view of the design Mentor Graphics Glossary B 1 D 7 J KILIMN OP QIRISITIU Y 7 Design Hierarchy A means of representing increasing levels of detail in a design For example the top level of a design hierarchy could be a block diagram the next level could be the logic gates that implement the block diagram and the bottom level could be the transistors that implement the logic gates Design Instance A design instance is created when a design is evaluated The pre V8 erel files created with EXPAND contain design instances Design Latching A means of freezing the design in its current state so that the design can be released for simulation or layout It lets work continue on the design without affecting the simulation or layout Latching a design locks the current version of objects referenced by the design viewpoint and prevents them from being edited or deleted Design Manager A graphical interface to and management facilities for design data such as schematic PC board and IC layout designs and for managing applications The Design Manager supports three primary tasks fi
172. s that you have a CD ROM drive available on your network To load Mentor Graphics software stored on CD ROM onto your network you use the install program To view documentation stored on CD ROM you use the BOLD Browser application C 4 Mentor Graphics Glossary B 1 QIRISITIU Y 27 Concurrent Design Environment A set of compatible Mentor Graphics design automation software tools with a framework of object oriented technology The Concurrent Design Environment provides concurrent viewpoints of a command database through multiple tools and supervisory applications to create model analyze synthesize monitor and control electronic mechanical and embedded software designs and processes CE See Connectivity Editing Cell 1 BOLD A cell is an independent BOLD server environment that is local to one or more workstations on the network The network can contain multiple cells and each workstation can access one or more cells 2 DSS The area at the intersection of a column and a row The basic storage element of DSS 3 ICgraph A named object in the database hierarchy When a cell is added to another cell it becomes a cell instance An instance can be placed or unplaced Each cell has a name but only an instance of the cell has a handle See Also Component Cell Library A cell library is a design object that you create in IC Station that contains the cells in you
173. s the rules that Mentor Graphics Glossary B 1 D 9 jJ KILIMN OP QIRISITIU Y 27 describe primitive instances A design object can have multiple design viewpoints You use the Design Viewpoint Editor DVE to create a design viewpoint which is a special data object used for design configuration The design viewpoint contains a subset of the schematic s information that is used by a specific tool such as ICgraph A design viewpoint is a special design object that contains both design configuration rules for evaluating the components created by Design Architect and references to related back annotation objects A design viewpoint is required before the design can be used with other downstream EDA tools such as ICblocks Design Rule Checking ICrules DRC checks design rules such as width and spacing of your layout You specify rules in the Rules File that describe the relationship of shapes to one another Design Viewpoint Editor An interactive design configuration editor that you can use to set and change the rules that configure your design check the Design Viewpoint to create edit and view models and to browse the design In addition you can use it to create connect disconnect and prioritize back annotation objects Destination The connectable element at the end of a connector Destination Technology The technology used to implement the design after optimization Device A hardware comp
174. s you temporarily replace the symbolic external view of a cell with the mask layout internal view for a cell Peeked Checking Mode In the PEEKED checking mode ICrules DRC analyzes the top level cell and all of the subcells that are currently peeked including the ports and pins that are in the subcells Performance Characteristics The simulated behavior of an AccuParts model in the AccuSim II analog simulator Performance characteristics can also refer to the behavior of a physical component sample as measured or as the manufacturer s datasheet specifies Performance Optimization See Timing Optimization Permissions 1 A list of users who have access to an object and the specific rights that each user has for accessing that object 2 The access rights to a directory or file for a given user Persistence The ability of an object s representation to survive from one invocation of a process or session to the next The data is saved on disk Personal Thesaurus An external user defined rules file that contains one or more aliases for a search string P 6 Mentor Graphics Glossary B 1 QIRISITIU Y 7 Parasitic Extraction ICextract PEX calculates resistance and capacitance effects that result from routing path placement in the layout Pgtext A Device Generator that you can use to place Pattern Generatable PG text into your design See also Device Generator
175. sent bounding boxes from either an original polygon a derived polygon or derived edge layer External 1 EDIF terminology for a library that already exists at the destination system that is the library is already located on the system where the netlist or design will be created 2 In System Architect a connectable element in a Context Diagram that is a source or destination for data that is outside the boundaries of the system being modeled Sometimes also called terminators External Aspect In ICgraph there are two sets of data associated with a cell internal aspect and external aspect External aspect objects are the interface and abstraction of the cell See also Aspect and Internal Aspect Extraction See Parameter Extraction Mentor Graphics Glossary B 1 E 7 QIRISITIU Y 27 8 Mentor Graphics Glossary 1 J KILIMN OP QIRISITIU Y 7 Glossary F The following terms are described in this section Face Falcon Font Path Falcon Framework FastScan Fault Analysis Feature Field Separator File File Caching File System File System Object File Transfer Protocol Fileset Fill Page Filter First Cut Panel Flat Checking Mode Flat Design Flat Layout Flatten FlexTest Floating License Floorplan Floorplanning Floorplan Shape Flow Flow Net Font Font Family Font Library Font Path Mentor Graphics Gl
176. sheets can make up a schematic model By default each schematic model has one sheet A schematic model is comprised of electrical objects including instances pins nets and frames which are connected to describe the behavior of a circuit Schematic Netlist Contains device identification names and node names that correspond to the component names and net names in the schematic respectively Schematic Sheet A page of a schematic It contain the entire schematic or it can be one of several sheets that represent the schematic model A schematic diagram created with the Schematic Editor Design Dataport or synthesis tools Many schematic sheets can make up a schematic or schematic drawing S 4 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 An object that points to the domain of AMPLE functions and external variables In the common user interface a scope is typically associated with objects such as areas toolkits and applications See also Frame SCR The acronym for Silicon Controlled Rectifier Screen See Display Screen Copy A picture of the screen It can be sent to a printer or saved in a file See also Bitmap and Hardcopy Scroll Bar A graphic gadget used to change the viewing area within a window A scroll bar consists of a slider scroll region and stepper arrows The size of the slider represents the relative portion of the data that is currently vis
177. st Schematic Sheet Scope SCR Screen Screen Copy Scroll Bar Secondary Entry Secondary Parameter Seed Seed Layer Select Filter Select Mouse Button Selected Text Selection Selection Cursor SEPARATE Separate Process Server Sequence Version Serif Server Server Configuration File Server Icon Server Process Manager Mentor Graphics Glossary B 1 Serverless Mode Session Area Session Clipboard Session Process Session Window Setting Shape Shared Blocks Sheet Sheet Resistance Sheet based Model Sheet based Part Shell Shell Script Signal Signal Path Signature Synthesis Simple Clock Simple Connectivity Model Simple Copy Simple State Simulation Model Simulator SimView Site Sizing Sizing Operation Skew Edge SLD Names Slider SNF J KILIMN OP 5 Y 7 Soft Pathname Soft Prefix Softkey Solaris Solver Source Document Source Object Source Technology Spacing Spec Entry Specification Document Specification Statement Splice SPM Spool Spooled Data Spooler Node Standard Start Server Start State Startup File State State Diagram State Machine State Matrix State Transition Diagram State Transition Matrix Static Timing Analysis Status Code Status Code Stack Status Message SIC Stop A Server String Stroke 5 2 Stroke Weight Sub cell Sub cell Database Subcircuit Submenu Subnetting Subsystem Subtree
178. stem or product These requirements are documented in the Requirement View System Symbol A component node on a Context Diagram that represents a control or data system See Control System and Data System Mentor Graphics Glossary B 1 S 21 QIRISITIU Y 27 5 22 Mentor Graphics Glossary 1 J KILIMN OP QIRISITIU Y 27 Glossary The following terms are described in this section Tab Window Manager Target Path Target Technology TCP IP TCP IP Administrative Files Technology Environment Telnet Termination Script Test Test Vector Generation Text Entry Box Text Insertion Cursor Text Support Subsystem Text Window Text mode Printing Threshold TimeBase Times Timing Constraints Timing Model Timing Optimization Title Title Area Title Bar Toggle Toggle Button Tool Tool Invocation Tool Registration Tool Viewpoint Mentor Graphics Glossary B 1 Toolbox Toolbox Search Path Toolkit Tools Window Top Checking Mode Top down Design Top level Cell Database Topology Torque Torsion Touchpad Transcript Transcript Pad Transcript Window Transduction Transfer Function Transform Transform Component Transform Instance Transition Transition Node Translation Transparent File Trash Window Travel Log True Scale TSS TWM Two layer Boolean Two phase Clock Type
179. suitability to re use and ease of implementation Archive Archiving creates a sequential file that contains all the information in a complete hierarchical copy of a design In addition the file contains other information 4 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 7 concerning the design object such as the version of tool that created it The sequence file can optionally include archive copies of certain tools The target location is normally a tape Area A rectangular portion of the display screen for graphics display and event handling Area Optimization The process of altering the design structure to reduce the gate count while maintaining functionality Argument That part of a function or command that you supply For example in the function writeln This is an argument the text string encapsulated in quotation marks is an argument you supply Array An array is an object that contains arrayed instances of a cell it contains rows and columns of a cell instance Ascender The portion of lower case letters that extends above the main portion of the letter such as the tops of b d and h ASCII American Standard Code for Information Interchange which is a seven bit code representing alphanumeric and control characters A standard that defines the characters associated with the lower 7 bits of a byte of information the ASCII standard defines only the lower 128
180. t are resolved outside of the component either through the design viewpoint or a timing file Parameters can be properties attached to an instance in the Schematic Editor or specified in a modelfile Parameters are values that must be supplied to variables before the expression s containing those variables can be evaluated See also Discrete Model Parameter Macromodel Model Parameter and Model Parameter Parameter Estimation The process of initially approximating model parameter values for discrete components and analog integrated circuits using calculations from datasheet values or from measured data Parameter estimation employs direct computational techniques Mentor Graphics Glossary B 1 P 3 J KILIMN OP QIRISITIU Y 7 Parameter Extraction The process of deriving model parameter values using calculations from equations or from optimization When Mentor Graphics derives model parameter values from optimization it begins with an estimate of these values Parameterized Device See Device Generator Parasitic Resistance Parasitic resistance is comprised of both sheet resistance and connection resistance Parent The super component of a Transform Component immediately above it in the design hierarchy A child component appears as a transform instance on its parent Data Flow Diagram Part A collection of data that can be either a design building block a primitive or the electronic repres
181. t controls the execution of computer programs and that can provide scheduling debugging input output control accounting compilation storage assignment data management and related services Optimization The process of implementing a design in a target technology so that it meets specific requirements for gate count and performance More specifically the automatic determination through a series of analyses with varying model parameter values of the minimized error between model behavior and measured and or manufacturers datasheet information for a user designated circuit response Optimization involves the use of linear or non linear constrained mathematical search algorithms and techniques Options Box See Options Dialog Box Options Dialog Box A dialog box that appears after clicking on the Options button on a prompt bar Generally you do not need to supply values for its gadgets because they are optional Mentor Graphics Glossary 1 O 3 jJ KILIMN OP QIRISITIU Y 27 Orientation The direction of print on the page Portrait orientation reads from left to right across the narrow dimension of the page This manual is in portrait orientation Landscape orientation also reads from left to right but places the image across the wider dimension of the page This type of printing is commonly used for graphics designs spreadsheets and tables Both terms originated in painting a portrait is
182. t lets you change the editing mode of the cell and maintain the cell s connectivity Direct ICextract Parasitic Extraction Direct ICextract Parasitic Extraction Direct PEX calculates capacitance and resistance values for nets that correspond to paths in an active context cell Direct ICextract PEX Calculates parasitic capacitance and resistance for nets estimates time delays and gives you the ability to back annotate the results to a schematic Direct ICtrace Layout Versus Schematic Direct ICtrace Layout Versus Schematic Direct LVS compares the active context cell s connectivity to the source circuit s connectivity Direct LVS operates on cell instances nets ports and instance pins in the active context cell It creates correlation data by finding matches between the cell instances nets ports and instance pins of the layout circuit to corresponding elements of the source circuit Direct ICtrace LVS Compares electrical connectivity of a cell layout with a source circuit and gives you the capability to perform cross probing between the layout and source Direct PEX Direct PEX reads net information from the cell s Connectivity Database and stores the extracted net parameters as properties of the corresponding net objects back into the Connectivity Database Mentor Graphics Glossary B 1 D 13 J KILIMN OP 5 Y 27 Direct Verification Direct verification takes advantage of the
183. t provides a scrollable list of options from which to choose LLBD See Local Location Broker Daemon LM LICENSE FILE Contains the port number s on the license server s the name s of the server s holding the license data file and the pathname to the license data file Load See Capacitance Load L 4 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Local A variable or command available only to the part of a program that defines it Local Area Network A network that connects systems together by a continuous medium such as a twisted pair coaxial or fiber optic cable A LAN typically covers a small geographic area usually less than a few thousand feet An Ethernet is an example ofaLAN Local Layer Definition Layers operations that define layers within a RuleCheck statement are called local layer definitions Local Location Broker Daemon A server that maintains information about objects and interfaces on the local host The local location broker also forwards requests to the appropriate server on the local host Some Mentor Graphics applications require that an IIbd run on the local workstation Local Network The network that is directly connected to your host See also Hop and Remote Network Location Broker A set of software including the local location broker the global location broker and the location broker client agent The location broker maintains information a
184. t that connects to a net on another sheet Offset The amount the print server moves printable area from its default printable area on the page One layer Boolean One layer Boolean operations perform simple Boolean logic operations on an original layer in order to generate a derived polygon layer Online Library A library of information that is stored on electronic media and can be retrieved and displayed on computer monitors The BOLD Administrator is used to make online libraries available to a network and the BOLD Browser is used to retrieve information from the online libraries Online Retrieval The act of using the BOLD Browser to locate information in an online library and display that information on a computer monitor O 2 Mentor Graphics Glossary B 1 QIRISITIU Y 27 The abbreviation for operational amplifier Open To start an action or begin working with a text data or graphics file Open Software Foundation A consortium of computer hardware and software manufacturers formed to develop industry standards for software production OpenDoor Program A program that allows encapsulation and inclusion of foreign data and applications into Mentor Graphics Falcon Framework Through the Design Manager it also provides a common look and feel between foreign application sessions and sessions running Mentor Graphics applications Operating System Software tha
185. tance group Group seed This property specifies a relative position within a cell where you can preplace an instance group Grouped Box See Field Separator Mentor Graphics Glossary 1 G 5 J KILIMN OP QIRISITIU Y 27 Grow An operation where the size or shape of an object is changed See also Resize Guaranteed Specifications Specifications that AccuParts models meet within a range of 90 to 98 percent G 6 Mentor Graphics Glossary B 1 QIRISITIU Y 7 Glossary The following terms are described in this section Handle Handshake Hard Link Hard Pathname Hardcopy HDL HDL Architect HDL Specification Header Help Key Help Mode Helvetica Font Heterogeneous Network HI Hierarchical Block Hierarchical Decomposition Hierarchical Design Hierarchical Layout Hierarchical Repartitioning Highlight Hit Hitachi Hitachi 5 HML HOME Home Directory Homogeneous Network Hop Host Hot Key Hotspot Mentor Graphics Glossary B 1 Hourglass HP Penplotter HP UX Human Interface Hyperbutton Hyperdestination HyperDriver Copy Hypersource Hypertext Hypertext Link Hysteresis H 1 QIRISITIU Y 27 Handle A handle is a unique integer that identifies a specific object in your design Every object that you create or place in your design has a handle Seealso
186. tation to run an application Nominal Delay The average time a signal takes to propagate through an instance or net The effect of an input change does not occur on the output until after the duration of nominal delay Non functional Model A model that does not provide logic function information but can provide timing layout graphical or other information Non proportional Font See Monospace Font Not dot An object on a vertex that indicates that not all the segments passing through that vertex are connected It is not an electrical object on a schematic sheet Notepad The Mentor Graphics window oriented editor A full featured text editor that you can invoke through the user interface or through AMPLE functions Available features include font selection search and replace auto wrap and file manipulation You can select text for deleting copying clipboard storage and cut and paste operations Mentor Graphics Glossary B 1 N 5 J KILIMN OP QIRISITIU Y 7 Notepad Document Text within a Notepad window Notepad documents become files only when written to the file system Notepad Text Text within a Notepad window Notepad text becomes a file only when written to the file system Notepad Window The area within the screen that contains the text window Notepad windows can be small enough to contain a single line of text or large enough to fill an application session N 6 Mentor G
187. tem uses three types of servers Library Server Resource Server and Network Server Using the BOLD Administrator you can start stop and show the status of BOLD servers 2 A hardware device that is optimized for a specific task such as a file server See also Print Server and Daemon Server Configuration File A file containing directives that control the operation of the print server To set the default behavior of the print server the print server reads the SCF once at startup The SCF settings can be overridden on a job by job basis with a job configuration file JCF Server Icon A server icon is a BOLD Administrator icon that represents a BOLD server Each server icon is labeled to show what type of BOLD server the icon represents Library Server Resource Server or Network Server and where the server is running Server Process Manager A server that allows you to create a process on a workstation from another remote workstation Serverless Mode Serverless mode is the mode of operation of the BOLD online information system in which BOLD Browser applications locate and read data from online libraries directly without the use of the BOLD servers Consequently system management operations performed with the BOLD Administrator application have no affect on BOLD Browsers running in serverless mode See also Client Server Mode Session Area A portion of the BOLD Browser session window that exists beneath the pulldown menu bar
188. the terms for that letter Mentor Graphics Glossary B 1 V About This Manual vi Mentor Graphics Glossary B 1 J KILIMN OP 5 Y 27 Glossary The following terms are described in this section AA Absolute Pathname Absolute Time Access Control List AccuParts Library AccuSim II Primitive AccuSim II Simulator ACL Acquiring A License Action List Active Area Active Context Cell Active Process Active Window Actual Flow Net AIX Alarm Window AMPLE AMPLE PATH Analog Modelfile Annotation Block Apollo Token Ring Network Application Application Variable Application Window Architectural Analysis Archive Area Area Optimization Argument Array Mentor Graphics Glossary B 1 Ascender ASCII ASCII Backannotation File ASCII File ASIC Asim model Property Aspect Aspect Ratio Asynchronous ATR Attribute Attribute File Authorized Area Auto Scale Auto deletion AutoLogic AutoLogic VHDL Automated Layout Automounter Auxiliary Layer Auxiliary Operation Auxiliary Rules File Operation jJ KILIMN OP QIRISITIU Y 27 See Authorized Area Absolute Pathname A pathname that originates at the root directory An absolute pathname begins with either a slash or with a dollar sign and specifies the full pathname for the specified object See also Hard Pathname Relative Pathname and Soft Pathname
189. the instantiation of transforms within Data Flow Diagram views of a system Each transform can only be instantiated on a single Data Flow Diagram Mentor Graphics Glossary B 1 T 9 QIRISITIU Y 7 in a design hierarchy and its interface is defined the input and output flows on the parent diagram See Control Transform and Data Transform Transition A change of state within a State Machine The transition takes place when its associated condition is satisfied A Mealy transition has an associated action list which is executed when the transition takes place A transition is represented by a connector with associated condition and action text in a State Transition Diagram or by a cell in a State Transition Matrix See State Mealy State Machine and Moore State Machine Transition Node A symbol on a State Transition Diagram that enables a set of transitions between states to be replaced by a simpler set of partial transitions between the same states A transition node with no name is treated as a global interrupt from each state in the state machine See also Entry Node Translation The process of using non Mentor Graphics application output as input for Mentor Graphics applications or the reverse Transparent File Files translated into the appropriate page description language PDL or plotter machine language by a print server This object type does not need further processing in o
190. tion Broker Location Broker Client Agent Location Cursor Location Map Lock Logical Event Logical Information Logical Key Name Logical Page Number Logical Transcript Logic Component Logic Instance LSB LSI Lumped Parasitic Extraction LVS Local Area Network Local Layer Definition Local Location Broker Daemon Local Network Mentor Graphics Glossary B 1 L 1 J KILIMN OP QIRISITIU Y 27 L KEY WORDS Provides a method of specifying GDT keywords that might not be included in the current version of lconvt Label The text part of an icon or graphic control LAN See Local Area Network LANG Provides applications with information on the language and the set of characters that are required by the user Latched Design A design that is frozen in its current state so that the it can be released for simulation or layout See also Design Latching Layer Definition Statements that assign a name to a derived polygon layer or a derived edge layer Layer Operation Produce derived layers by performing geometric and topological operations on polygons and edges of a cell and cell hierarchy layout Layer Set A layer set is a logical grouping of layers that typically belong to the same mask level for example metallization or polysilicon The layer set acts as if it were a simple original layer with all of the geometries on the constituent layers overlapped on a single layer ICrul
191. trolling design processes and project management and customizing the user interface FastScan FastScan creates a set of test patterns that achieve a high accurately measured test coverage for scan based designs FastScan performs a static learning analysis of the circuit to determine indirect relationships of gate assignments Fault Analysis Fault analysis is the process that the simulator uses to determine the fault detection coverage of your designs Feature A portion of the license data file that contains the Mentor Graphics software license Features are either composites such as ASIC Tools stations such as Idea station or options such as QuickSim Field Separator A line or rectangle drawn or etched around a set of controls to show that the controls contained within the box are logically related F 2 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 File A type of storage object that contains information in ASCII binary data or relational format See also Directory File Caching To store data that has been accessed from an online library in a file on the hard disk on which the resource server is running File caching speeds up repeat access to library data however it is done at the expense of disk space File System A hierarchical arrangement of directories and files File System Object File system objects are the files and directories of which a design object is c
192. ts Each section of a net is assigned a pair of resistance and capacitance values that represents all parasitic resistance and capacitance values for that section DM See Display Manager DOFile A 8 text file containing a sequence of commands a macro that can be executed using the DO command within an application Document Area The area within the document window that displays the pages of an online document The document area is beneath the document window title bar Document Window A window in which an individual online document can be viewed and manipulated A document window is contained within a BOLD Browser session area window A document window contains the document area and also consists of the window title bar which contains the window menu button window control buttons document title and any BOLD Browser icons and the scroll bar areas hidden by default Domain A collection of systems administered as a logical group In NIS a domain is a group of systems that access the same set of NIS maps Domains are given names and can be nested within one another For example your host along with other hosts can be part of a domain named sys mgt In turn domain sys mgt along with domains engr mktg and desg can be part of a larger domain named wiblets Domain OS The HP Apollo operating system which consists of the Aegis BSD 4 3 and Sys V 3 operating environments and other support software D 16 Mentor Graphics
193. uch as a menu or dialog box until needed The object is created the first time you invoke it Mentor Graphics Glossary B 1 D 5 J KILIMN OP 5 Y 27 Demoting Cells Changing from an editing mode of tighter constraints to an editing mode of fewer constraints is called demoting a cell Derived Edge Layer Derived edge layers are comprised of edges or edge segments Derived Error Layer Derived error layers contain edge clusters resulting from error directed operations Derived Polygon Layer Derived polygon layers are comprised of polygon information and derived edge layers are comprised of edges or edge segments Descender The portion of lower case letters g q and y that extends below the baseline of other characters Design 1 A component and a design viewpoint which together describe the electrical graphical and configuration aspects of a design 2 The contents of a directory initially created by Design Architect The design contains all the data necessary for processing simulation and layout applications See also Design Object Design Architect The Mentor Graphics schematic capture application that includes a Schematic Editor a Symbol Editor and a VHDL Editor You can use it to create and edit logical designs that are used by downstream processes such as IC and layout and analog and digital simulation Design Configuration Rules A set of rules lo
194. uctions describing actions for a computer to perform some task conforming to the rules and conventions of a particular programming language 2 Afile containing coded instructions to the computer compiled program is a file that 1s first created in source code and then transformed by a compiler into object code A shell program or shell script is a text file that does not need to be compiled because it is interpreted by a shell Progressive Disclosure The ability of a dialog box to reformat itself in response to user input either to make more gadgets visible or to hide existing ones Promoting Cells Changing from an editing mode of fewer constraints to an editing mode of tighter constraints is called promoting a cell Prompt 1 A symbol displayed by the system to let you know that it is ready for input For example the default System V Bourne shell prompt is the dollar sign character P 14 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 2 Text displayed in a dialog box or prompt bar to guide your actions Prompt Bar A special dialog box displayed to collect input when you invoke an AMPLE function without supplying all its required values A prompt bar is a one line dialog box that consists of the function name gadgets with labels and Options OK and Cancel buttons Not all prompt bars an Options box Property In the Mentor Graphics environment a means
195. unt of capacitance that exists on a net including the sum of the pin capacitance and the estimated route capacitance Mentor Graphics Glossary 1 C 3 J KILIMN OP QIRISITIU Y 7 Card Catalog Entry Information about a document within an online library Similar to a card catalog entry in a public library a card catalog entry for an online document provides basic information about the document such as the title The BOLD Browser User s Manual the single word document name bold brow user the abstract the copyright notice and the version There is one card catalog entry for each document in an online library Carriage Control Character A character or character sequence that starts a new line or a new page Cascade Arrow An arrow to the right of a menu item that indicates the presence of a cascading menu Cascading Menu A submenu menu within a menu that displays when you highlight a menu item with an arrow after its name Category See Library Category CBC See Correct By Construction CD ROM Caddy A holder for the CD ROM disk that is used to load the CD ROM disk into the CD ROM drive CD ROM Drive The hardware device that provides access to information stored on a CD ROM CD ROM Compact Disc Read Only Memory An optical read only storage medium Mentor Graphics product software and documentation is available on INFORM CD ROM Reading information from CD ROM require
196. used to store text or graphics during cut and paste operations Clocking Schemes Two types of clocking are supported by System Architect to control the timing aspect of the system behavior They are asynchronous and synchronous using explicit clocking Clone A duplicate view of a window In System Architect you can clone the Context Diagram Data Flow Diagram and State Transition Diagram windows Any edits made in one window are also made in the clone However you can display different parts of a diagram in each clone 2 In the BOLD Browser a clone can be a HyperDriver Copy or a Simple Copy C 8 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Close 1 A label given to a button in some dialog boxes that performs the action of closing the dialog box 2 Aselection in window menus that closes the window associated with the menu Clustering A technique used by Schematic Generator to simplify placement and routing by grouping related components into closely placed clusters which are then treated as units when the actual schematic is produced Code Page A mapping of available printer characters to specific values in the printer s memory For example the printer code 182 could specify a Greek character in one code page and a block graphics character in another Collision Detect If two systems on an Ethernet attempt to send data at the same time a collision occurs W
197. usually a vertical view while a landscape is usually a horizontal view Origin 1 The connectable element at the start of a connector 2 In ICgraph location 0 0 in a cell which is used as a reference point when instantiating one cell into another Original Layer An original layer stored in the Cell Layout Database contains original polygon data you can individually display and edit The original layer is the ultimate data source for all ICrules operations OS See Operating System OSF See Open Software Foundation Output Capacitance The expected load at an output port due to devices outside the bounds of the circuit Output Setup The output setup constraint defines the time before the next active edge of the circuit clock at which the output signal must be stable The time at which a signal at the circuit output must be valid This time can be expressed relative to a circuit clock for sequential circuits or as an absolute value for combinational circuits This time is generally due to some external device outside the circuit that requires its data to be stable a certain amount of time before it is clocked in O 4 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Overflow In automated layout an overflow is an unrouted connection between parts of a net that aren t physically connected in the layout Mentor Graphics Glossary 1 5
198. vity or violations of physical design rules Connectivity and physical design rules are checked with each edit and any edits that would cause a violation are not accepted unless you specify the inst unchecked option on certain functions In the CBC mode a rulecheck group named continuous drc is automatically evaluated each time that you modify the layout You must have the continuous drc group in your Rules File The CBC mode is typically used for compaction and cleanup after you do automated layout See also Geometry Editing and Connectivity Editing Correspondence Correspondence is a term that describes the information contained in a crossprobe table This information describes the relationship between an instance in a logic source schematic and the corresponding layout object Correspondence is established by 1 Running LVS 2 Running SDL 3 Using the function called set logical correspondence See also Crossprobe Table C 18 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 27 Count The value of a digital word For example the digital output word 1 0 1 1 hasa count of 11 because 1011 is 11 5 Coupled Simulator A mixed signal simulator consisting of separate analog and digital simulator kernels in which the interface between the analog and digital simulation algorithms is internal to one of the simulators Coupling Capacitance Coupling capacitance is the capacitance
199. xtraction when you want to update the connectivity of the cell however the extracted connectivity is only valid until you make a change to the cell Mapping The process of converting a generic netlist to a technology specific netlist Margin The space surrounding a picture or text Mask Connectivity Extraction Mask Connectivity Extraction is a function that analyzes layout geometries to recognize electrically connected nets Mask Connectivity Extraction extracts the layout s connectivity by using the connectivity operations in the Rules File Recognizes electrically connected net objects of a layout It is only invoked as a subsystem by Mask ICtrace LVS Mask ICextract PEX and ICrulesDRC Mask ICtrace Layout Versus Schematic Comparison Mask ICtrace Layout Versus Schematic Comparison Mask LVS finds the relation between the complete layout hierarchy s connectivity and the source circuit s connectivity It operates on the cell hierarchy which starts with the top level cell that is associated with the currently active IC Environment window M 4 Mentor Graphics Glossary B 1 J KILIMN OP QIRISITIU Y 7 Mask Verification Mask verification develops its own connectivity from the entire design beginning with the top level cell and compares the connectivity of the layout and the source Master Tree A Master tree is the first Mentor Graphics tree you install on a workstation or file server and usual
200. y below it in the design hierarchy A transform instance on a DFD typically has a child view which can be a DFD State Machine or VHDL Specification Choice Stepper A list box you can scroll or step through one item at a time by clicking the up or down arrows This is a common gadget in prompt bars Class Granular divisions within a component type based on different behavior or purpose Class is analogous to a functional subset of a library category Click To press and release a mouse button The term comes from the fact that pressing and releasing the buttons of most mice makes a clicking sound Client Area The interior area of a window where applications run See also Client Border Mentor Graphics Glossary B 1 C 7 jJ KILIMN OP QIRISITIU Y 27 Client Border The border around the client area See also Client Area Client Process The process that attempts to retrieve information from an online library Typically the client process is initiated by someone who uses the BOLD Browser Client Server Mode Client server mode is the mode of operation of the BOLD online information system in which BOLD Browser applications use BOLD servers to locate and read data from online libraries The BOLD Browsers are clients of the BOLD servers In this mode system management operations must be performed with the BOLD Administrator application See also Serverless Mode Clipboard A reserved memory area
201. you grow a window or graphic object a rectangle Mentor Graphics Glossary B 1 R 9 QIRISITIU Y 7 representing the outline of the object tracks with the mouse pointer to indicate the new size or shape See also Dynamic Rectangle RuleCheck Comment A RuleCheck comment is text that follows an at sign in a Rules File You can write RuleCheck comments only within a RuleCheck statement s brackets RuleCheck Group A RuleCheck group is a set of RuleCheck statements and other RuleCheck groups that are referred to by a single name When you evaluate a RuleCheck group you are actually evaluating its constituent RuleCheck statements and RuleCheck groups RuleCheck Statement A RuleCheck statement is a named collection of layer definitions layer operations universal comments and RuleCheck comments that is located in a Rules File Rule File An ASCII text file that contains source information that is used by ICrules ICtrace and ICextract for a particular Process to perform design rule checking connectivity extraction device recognition layout versus schematic comparison and parasitic extraction The Rule File governs the following activities derived layer generation design rule checks connectivity extraction device recognition and parasitic extraction It consists of a set of statements and layer operations Each operation is composed of keywords layer names and other paramet

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