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IP-488

1. 22 GND 47 5V 23 GND 48 5V 24 GND 49 5V 25 N S 50 5V Figure 6 IP 488 VO Pin Assignment Construction and Reliability IndustryPacks were conceived and engineered for rugged industrial environments The IP 488 is constructed out of 0 062 inch thick FR4 material The four copper layers consist of two signal layers on the top and bottom and two internal layers for power distribution All components on the IP are surface mount components except for the two 50 pin connectors and the two test points which are through hole Surface mounting of components allows for high reliability and low cost The IndustryPack connectors are keyed shrouded and gold plated on both contacts and receptacles They are rated at 1 Amp per pin 200 insertion cycles minimum These connectors make consistent correct insertion easy and reliable The IP is secured to the carrier with four metric M2 stainless steel screws The heads of the screws are countersunk into the IP The four screws provide significant protection against shock vibration and incomplete insertion For most applications they are not required The IndustryPack provides a low temperature coefficient of 0 89 W C for uniform heat This is based on the temperature coefficient of the base FR4 material of 31 W m C and taking into account the thickness and area of the IP This coefficient means that if 0 89 Watts is applied uniformly on the component side that the temperature difference be
2. SBS Technologies IP 488 IEEE 488 GPIB Instrumentation Bus IndustryPack User Manual SBS Technologies Inc Subject to change without notice Hardware Revision D Part 89002057 Rev 1 1 20050505 IP 488 IEEE 488 GPIB Instrumentation Bus IndustryPack SBS Technologies Inc 1284 Corporate Center Drive St Paul MN 55121 Tel 651 905 4700 FAX 651 905 4701 Email support commercial sbs com http www sbs com 1999 2005 SBS Technologies Inc IndustryPack is a registered trademark of SBS Technologies Inc QuickPack SDpacK and Unilin are trademarks SBS Technologies Inc PCeMIP is a trademark of SBS Technologies Inc and MEN Mikro GmbH SBS Technologies Inc acknowledges the trademarks of other organizations for their respective products mentioned in this document All rights are reserved No one is permitted to reproduce or duplicate in any form the whole or part of this document without the express consent of SBS Technologies Inc This document is meant solely for the purpose in which it was delivered SBS Technologies Inc reserves the right to make any changes in the devices or device specifications contained herein at any time and without notice Customers are advised to verify all information contained in this document The electronic equipment described herein generates uses and may radiate radio frequency energy which can cause radio interference SBS Technologies Inc assum
3. bus time out error 1 800 by 3 900 by 0 340 inches maximum Operating temperature 0 to 70 C Humidity 5 to 95 non condensing Storage 10 to 85 C
4. e AR Ge Ge Re AR Ge Ge GR ee Re 13 Product Description IP 488 is part of the Industry Pack family of modular I O components It provides talker listener and controller access to the IEEE 488 instrumentation bus GPIB IP 488 is compatible with IEEE 488 1 and IEE 488 2 IP 488 is a straight forward implementation of National Instruments NAT9914A The NAT9914A is pin for pin compatible with Texas Instruments popular TMS9914A with enhanced capabilities i e IEEE488 2 Users will find both programming and applications easier if they have reference to the Texas Instruments TMS9914A General Purpose Interface Bus GPIB Controller Data Manual the TMS9914A GPIB Controller User s Guide document no SPPU013 and National Instruments NAT9914A IEEE488 2 data sheet These documents are available from Texas Instruments and National Instruments The interface from the 9914A to the IP carrier is conventional using 8 bits only on odd bytes The base address of the chip is the same as the base address assigned to the IP slot on the IP carrier board Two additional addresses are implemented outside the chip to read the 6 bit address switch and access the interrupt vector register These addresses are shown in the address maps shown in the next sections The LSB of the vector register also serves as a control line for the System Controller function SC The interface from the 9914A to the instrumentation bus is implemented with two Texas Instrumen
5. e ID PROM on the IP 488 is shown in Figure 5 below For more information on IP ID PROMs refer to the IndustryPack Logic Interface Specification The location of the ID PROM in the host s address space is dependent on which carrier is used Normally for VMEbus carriers the ID PROM space is directly above the IP s I O space or at IP base 80 Macintosh drivers use the ID PROM automatically RM1260 address may be derived from Figure 5 below by multiplying the addresses given by two then subtracting one RM1270 addresses may be derived by multiplying the addresses given by two then adding one available for user 19 reserved 00 OF Manufacturer ID SBS ASCII C ASCII A ASCII P an 01 ASCII I 49 Figure 5 ID PROM Data hex VO Pin Wiring This section gives the pin assignments for IP 488 The pin numbers given below correspond to numbers on the 50 pin IndustryPack I O connector and to the wires on a 50 pin flat cable plugged into a standard IP carrier board 1 OUTD1 26 N C 2 OUT D5 27 N C 3 OUT D2 28 N C 4 OUT D6 29 N C 5 OUT D3 30 N C 6 OUT D7 31 N C 7 OUT D4 32 N C 8 OUT D8 33 N C 9 OUT EO1 34 N C 10 OUT REN 35 N C 11 OUT DEV 36 N C 12 GND 37 N C 13 OUT NFRD 38 GND 14 GND 39 OUT PE 15 OUT NDAC 40 GND 16 GND 41 OUT TE 17 OUT IFC 42 GND 18 GND 43 OUT DC 19 OUT SPQ 44 GND 20 GND 45 OUT SC 21 OUT ATN 46 GND
6. es no liability for any damages caused by such interference SBS Technologies Inc s products are not authorized for use as critical components in medical applications such as life support equipment without the express consent of the general manager of SBS Technologies Inc Commercial Group Table of Contents Product DESCIIDUOM ES Ee Re Ee Pe Ge Re se ee 5 UE A EO E Ee 7 NuBus AddressInd ED EE GE ER EG ES GR EG GE E AE Ge GR EE 8 Programming RN 9 User OptiGnS Ee SE EG ES Ee GR EG anne EG GE Ee N Ge DE Ee SEE RE REN ve 10 IEEE A88 BUS OVeIVIGW Re Re Gee atic aiden tate Gee ee Re sich ies Re ll Arden wee 11 IDPROM EER once deities ee RR ER ee dan eR eatin dina se oe Ge ed oe bud contin 12 lelie EE OE OE OE EE ER A 13 Construction and Reliability ee ee ae Ge GR GR AAR Ge GR GR AAR o GR GR RR a GR ninos 14 O eg eed dee ee Ge ves Reede see eed seas ve Ge eed de sd ee Ge Se ee de Ge 15 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 List of Figures Simplified Block Diagram of IP 488 00 ee ee se Re Re Ge GR GR ER Re Ge Ge GR RR ee Ge Ge ee eg 6 VMEbus Register Map is ses ee EN ee Er A se ek See Ee n ee bee ee Gee ee Ge Gee Gee 7 NuBus Register EE OE OE EE OE E E E E EAA 8 IEEE 488 Bus Connector Pin Assignment iese se see ese ee ese ee ee ee ee ee ee Ge ee ee ee 11 IDPROM Data hee atest bak Ee Ee DE die be E Ge Dee ee ee 12 IP 488 VO Pin Assignment ese se se ee Ge Ge GR AR Ge GR R
7. nd listeners No new data is sent until each device addressed to listen has received the previous byte and is ready for the next This method of asynchronous communication ensures that the data rate is suited to the slowest active listener A standard 24 pin connector and cable is used Instruments have female connectors and the cables have two male connectors Cables also have each end of a second female connector This permits stacking of cable connections at the connectors somewhat like Christmas tree light strings Cables are typically six or nine feet each AMP Incorporated as well as many other firms sell prefabricated cables A six foot adapter cable from the IP carrier board to the standard cable is available from SBS SHIELE5RQ NDA AV DIO4 DIO2 24 23 22 21 20 19 18 17 16 15 14 13 GND GND GND GND DIO8 DIO6 Figure 4 IEEE 488 Bus Connector Pin Assignment ID PROM Every IP contains an IP PROM whose size is at least 32 x 8 bits The ID PROM aids in software auto configuration and configuration management The ID PROM on the IP 488 is realized in an Altera 7032 also where all of the IP logic is found The user s software or a supplied driver may verify that the device it expects is actually installed at the location it expects and is nominally functional The ID PROM contains the manufacturing revision level of the IP If a driver requires that a particular revision be present it may check for it directly Standard data in th
8. or all six of the switches is off IEEE 488 Bus Overview Much of the information in this section is adapted from Texas Instruments TMS9914A Data Manual Information concerning IEEE488 2 can be found in the National Instruments NAT9914A data sheet The GPIB is another name for the IEEE 488 Instrumentation Bus The Hewlett Packard company uses the designation HPIB for implementation HP Tektronix the John Fluke Manufacturing Company and others manufacture a wide range of laboratory calibration and production instrumentation that uses the GPIB to communicate Most systems have one or more Controllers typically a general purpose programmable computer with real time capabilities The GPIB permits up to 15 instruments or computers within a localized area to communicate with each other over a common bus Each device has a unique address which is often read from user accessible switches at power on The basic operating modes of GPIB devices are Talker Listener and Controller Many devices can both talk and listen Most controllers also have talker and listener capability Information is transmitted in a byte serial format by one talker to any number of listeners Information consists of either data or commands Eight data lines plus eight control lines and eight ground lines make up the bus The pin assignments of these lines are given in Figure 4 below Three of the control lines operate as a 3 wire handshake between talker or controller a
9. ovides direct access to the eight internal registers of the NAT9914A chip Each register occupies one byte on odd boundaries The base address is determined by the base address of the I O space for the IP position by the IP carrier board These are the first eight entries in Figure 2 In addition the IP 488 provides access to two registers outside the NAT9914A These are the interrupt vector register and the 6 bit switch register These are the last two entries in Figure 2 For NuBus applications refer to the NuBus Addressing section below Address Function base 1 Int Status Mask 0 R W base 3 Int Status Mask 1 R W base 5 Address Status R base 7 Bus Status Aux Command R W base 9 Address W base B Serial Poll W base D Command Pass Parallel Poll R W base F Data In Data Out R W base 11 Address Switch R base 13 Vector Register R W Note The LSB of the Vector Register is System Controller SC which controls REN and IFC direction 1 for Transmit SC O for Receive non SC Figure 2 VMEbus Register Map NuBus Addressing The IP 488 provides direct access to the eight internal registers of the NAT9914A chip Each register occupies one byte on alternate odd boundaries The base address is determined by the base address of the IP carrier board These are the first eight entries in Figure 3 In addition the IP 488 provides access to two registers outside the NAT9914A These are the interrup
10. t vector register and the 6 bit switch register These are the last two entries in Figure 3 For VMEbus applications refer to the VMEbus Addressing section previous RM1260 RM1270 Address Address Function base 1 base 3 Int Status Mask O R W base 5 base 7 Int Status Mask 1 R W base 9 base B Address Status R base D base F Bus Status Aux Command R W base 11 base 13 Address W base 15 base 17 Serial Poll W base 19 base 1B Command Pass Parallel Poll R W base 1D base 1F Data In Data Out R W base 21 base 23 Address Switch R base 25 base 27 Vector Register R W Note The LSB of the Vector Register is System Controller SC which controls REN and IFC direction 1 for Transmit SC 0 for Receive non SC Figure 3 NuBus Register Map Programming Programming the IP 488 is supported under IBF file manager which runs under OS 9 IBF is a comprehensive package that includes 16 shell commands 19 OS 9 system functions and 23 C Language library functions Familiar file constructs such as open read and write are used Some systems integrators may wish to write their own drivers Programming the NAT9914A is similar to programming a conventional serial chip Drivers are available for the NAT9914A under several real time kernels Limited example programs are provided in the TMS9914A manuals which are available from Texas Instruments User Options The only
11. ts octal transceivers designed specifically for this purpose 75ALS160 and 75ALS164 These parts feature direct control by the 9914A except for SC bus terminating resistors glitch free power up and power down and receiver hysteresis The bus interface lines are protected from ESD damage by SBS unique LineSafe protection circuit The same filters attenuate any EMI to help the final system meet FCC CE EMI standards All control circuitry the ID PROM and the interrupt vector register is implemented within an Altera EPM7032 A simple interrupt architecture uses a single programmable vector for all 9914A interrupts Two 8 bit interrupt status mask registers inside the 9914A support powerful and flexible software An adapter cable connects the 50 pin flat ribbon connector on the carrier board to the industry standard IEEE 488 bus connector The IP 488 conforms to the Industry Pack Interface Specification This guarantees compatibility with multiple IP carrier boards Because the IPs may be mounted on different form factors while maintaining plug and software compatibility system prototyping may be done on one carrier board with final system implementation on a different one A block diagram of the IP 488 is shown in Figure 1 on the next page Filter Logic Interface IEEE 488 Controller 8 Control Filter Altera EPM7032 6 SIP SWITCH Figure 1 Simplified Block Diagram of IP 488 VMEbus Addressing The IP 488 pr
12. tween the component and the solder side is one degree Celsius Repair Service Policy Before returning a product for repair verify as well as possible that the suspected unit is at fault Then call the factory fora RETURN MATERIAL AUTHORIZATION RMA number Carefully package the unit in the original shipping carton if this is available and ship prepaid and insured with the RMA number clearly written on the outside of the package Include a return address and the telephone number of a technical contact For out of warranty repairs a purchase order for repair charges must accompany the return SBS will not be responsible for damages due to improper packaging of returned items Specifications Logic Interface IEEE 488 Controller Capabilities Bus Interface Node Address Wait States Interrupt Memory Space Dimensions Environmental Industry Pack Logic Interface NAT9914A Handles all IEEE 488 1975 1978 functions Compatible with IEEE 488 2 Talker Listener Controller LineSafe protection circuitry on all bus interface lines protect the IP from ESD damage The same filters attenuate any EMI to help the final system meet FCC CE EMI standards Settable by software or on board switch Zero on read cycles One on write cycles Eight bit vectored interrupts None There are no features of this IP accessible via the IP memory space Access to the memory space of this IP by the host will typically result in a host
13. user option on the IP 488 is the setting of the six position DIP switch This switch may be read by software Switches are commonly used on GPIB equipment to allow mechanical setting of the bus address Since in all cases the software must read the switch first then program the TMS9914A with the address this capability is a function of software and is not implemented directly on the IP The bus address switch is mounted on the edge of the IP 488 The switch must be set prior to installing the IndustryPack into the carrier board or the carrier board into the backplane The switch may be ignored in some applications for example by interrogating the user through a dialog box or by retrieving this information from a setup file The six separate switches in the DIP switch control what is read from the 6 LSBs of the switch register Bits D6 and D7 should be ignored when reading the switch A switch in the off position i e closest to the edge of the board will cause the corresponding bit to be read as a 0 while a switch in the on position i e away from the edge of the board will cause the corresponding bit to be read as a 1 Pin one of the switch which is indicated by the letters LSB on the silk screen and is located closest to P2 corresponds to DO LSB of the data read Pin six corresponds to D5 and is marked on the silk screen as MSB Note that IEEE 488 valid addresses must be between one and thirty one The factory default setting f

IP-488

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