Interface Control Document - National Radio Astronomy Observatory
Contents
1. so that they may quickly substitute for the primary computers in response to remote commands The Correlator System Racks consist of eight racks in each of four quadrants In each correlator quadrant the eight system racks consist of four racks identified as Station Racks and four racks identified as Correlator Racks 12 Scope This ICD covers the electrical interface requirement between the correlator and the CCC and CDP computers The software control function interface is included by reference to other documents 2 Related Documents and Drawings 2 1 References 2 1 1 CAN Protocol Definition Documents CORL 60 02 03 00 001 A PLA Status Draft CAN Protocol Plan Correlator Control Computer lt gt Long Term Accumulator Correlator Control Card CORL 60 01 05 00 001 A PLA Status Draft CAN Protocol Plan Correlator Control Computer lt gt Station Control Card ALMA Project Doc ALMA 60 00 00 00 70 40 00 00 A ICD Date 2005 04 08 Interface Control Document Status Released From 64 Antenna Correlator Draft Pending Approved Released Superceded Obsolete To Computing Correlator Software Page 5 of 15 CORL 60 02 05 00 001 A PLA Status Draft CAN Protocol Plan Correlator Control Computer lt gt Quadrant Control Card CORL 60 02 04 00 001 A PLA Status TBD CAN Protocol Plan Correlator Control Computer lt gt Final Adder Card CORL 60 03 02 00 001 A PLA Status TBD CAN Protocol Plan Correl2. 0 40 00 00 A ICD Date 2005 04 08 Interface Control Document Status Released From 64 Antenna Correlator Draft Pending Approved Released Superceded Obsolete To Computing Correlator Software Page 8 of 15 Pin Signal Cable Terminator 7 CAN H Twisted pair CAT 5 or Line to line as described above 2 CAN L _ equivalent 3 Ground Ground wire in cable 1 4 5 6 8 9 NC Table 4 CAN Bus Connector Pin Assignments The CAN Ground line is passed through the breakout box and included in the CAN cables from the breakout box to each quadrant The CAN buses have 120 ohm 250 mw line to line terminations at the last node on the bus in the correlator system racks 3 1 2 CCC Time Event and RESET Signals 2 cable assemblies Correlator Quadrant 0 sources a Time Event signal to the CCC and Backup CCC computers The CCC computers use the standard TTL parallel port e g LPT1 as the input port for the TE signal The CCC and Backup CCC computers source a RESET control signal to each of the four quadrants The RESET signals provide a hardware reset to the QCC cards The standard TTL parallel port is also used for these output signals CCC LPT Backup CCC Breakout Port LPT Port Box Connector 1 J10 1 J11 Table 5 CCC Parallel Port Cables The standard parallel port connectors on the CCC computers and the connectors on the breakout box are D Type 25 pin female conne
3. Atacama Large Millimeter Array ATACAMA LARGE MILLIMETER ARRAY Interface Control Document From 64 Antenna Correlator To Computing Correlator Software ALMA 60 00 00 00 70 40 00 00 A ICD Version A Status Released 2005 04 08 Prepared By Organization Date C Broadwell J Pisano National Radio 2005 04 08 Astronomy Observatory IPT Leader Approvals Organization Date Brian Glendenning grian ng National Radio Glendenning Astronomy Observatory Gianni Raffi European Southern Observatory J o hn We bbe r DN aK een Arber D or John Webber Dale 20050509154838 National Radio Astronomy Observatory Alain Baudry Observatoire de Bordeaux System Engineering Approvals Organization Date Dick Sramek Richard Sramek National Radio 2005 05 19 14 14 18 06 00 Astronomy Observatory i pome Christoph Haupt Christoph Haupt 2 2008 05 20 European Southern 14 02 00 02 00 Observatory Configuration Control Board Approval Organization Date l ALMA Configuration Christoph Haupt eo Sstoph daut Control Board Secretary 15 06 00 0200 signing for the Control Board JAO Director Release Authorization Organization Date Joint ALMA Office Project Director Massimo Tarenghi ALMA Project Doc ALMA 60 00 00 00 70 40 00 00 A ICD Date 2005 04 08 Interface Control Document Status Released From 64 Antenna Correlator Draft Pending Approved Released Superceded Obs
4. Total Number corr end PF2 RS 232 Async Port 1 Norcomp TBD 4 one per DB9 Station Racks 172 009 211 001 quadrant female PF3 RS 232 Async Port 2 Norcomp TBD 4 one per DB9 Corr Racks 172 009 211 001 quadrant female Table 7 Optional RS 232 Engineering Port Access Cables In each quadrant PF2 and PF3 are located in correlator bin C04 Both provide a three wire RS 232 interface These connectors are configured for straight through wiring to a DTE Data Terminal Equipment device This means CCC appears as a DTE to the correlator transmitting data into the correlator on pin 3 and receiving data from the correlator on pin 2 The Baud Rate on these interfaces is 57 6K Signal Name REF Pin PF2 ana PF3 1 Data to CCC 2 Data from CCC 3 4 Ground 5 6 7 8 9 Table 8 Correlator Engineering Port Connector Pin Assignments ALMA Project Doc ALMA 60 00 00 00 70 40 00 00 A ICD Date 2005 04 08 Interface Control Document Status Released From 64 Antenna Correlator Draft Pending Approved Released Superceded Obsolete To Computing Correlator Software Page 11 of 15 The correlator IPT will provide the set of cables for this interface if and when it is required Category 5 LAN type cabling with D Type 9 pin male connectors on the correlator end will be provided As indicated the connector type on the CCC end is TBD 3 2 Correlator to CDP Da
5. anytime the QCC is reset as part of the QCC initialization the QCC will reset both the Station and Correlator buses The breakout box in the CCC rack converts the TTL signal from the CCC to internal correlator levels for driving the QCC reset input At the TTL output from the CCC parallel port the RESET signals are low TRUE If CCC is disconnected or powered down the pull ups prevent the QCC from being held reset 6 TE Signal Functional Details 6 1 Timing Event to CCC and the Master CDP Computers The TE signals to the CCC and Master CDP parallel ports provides the 48 msec time event signal The duty cycle is 16 msec HIGH 32 msec LOW The positive going transition marks the timing event The phase of these ticks is independently adjustable to any phase in 8 nsec increments with respect to the time event provided to the correlator by the Backend and is synchronous with this signal 6 2 Timing Event to CDP Computers The data interface provides a 32 bit differential LVDS data bus from the correlator to the CDP along with a clock and seven control handshake signals all differential LVDS One of the seven control signals GPIO 5 will provide the time event tick to the CDP GPIO 4 will provide a 16 msec time event for possible use in conjunction with the TE The time event signal is a 48 msec event synchronous to the time event signal provided to the correlator by the Backend The phase can be adjusted to any 8 nsec position with resp
6. ator Control Computer lt gt Data Interface Card 2 1 2 Correlator System Manuals CORL 60 02 03 00 001 A MAN Status Draft Long Term Accumulator Sub System Manual CORL 60 00 00 00 002 A MAN Status Draft C167 Software Projects Manual 2 1 3 Commercial Off The Shelf COTS Documentation User Manual for the PCI64 HPDI32 Card General Standards Corporation www generalstandards com User Manual for the Infineon C167 Microprocessor www infineon com ALMA Project Doc ALMA 60 00 00 00 70 40 00 00 A ICD Date 2005 04 08 Interface Control Document Status Released From 64 Antenna Correlator Draft Pending Approved Released Superceded Obsolete To Computing Correlator Software Page 6 of 15 3 Physical Electronic Interface Details There are three categories of physical interfaces Category Description 1 Direct cable provided by the correlator IPT from connector on computer to connector on correlator backplane 2 Cable from connector on computer to a breakout converter interface box cable and box provided by the correlator IPT installed in computer rack 3 Direct cable provided by the computer IPT from correlator output data interface Data Port Interface installed in computer rack to computer Table 1 Correlator to Computer Physical Interface Categories There are five signal types between the correlator and computer systems Signal Type Descri
7. ceeeeceeeeeceeeeeceeeecseeecnaeeeenaeeeenas 15 2 S fety CCAS essais aE aE E E E E wee 15 Tables Table 1 Correlator to Computer Physical Interface Categories 6 Table 2 Correlator to Computer Signal Types 6 Table 3 CCC to Correlator CAN Cables 7 Table 4 CAN Bus Connector Pin Assignments 8 Table 5 CCC Parallel Port Cables 8 Table 6 CCC Parallel Port Connector Pin Assignments 9 Table 7 Optional RS 232 Engineering Port Access Cables 10 Table 8 Correlator Engineering Port Connector Pin Assignments 10 ALMA Project Doc ALMA 60 00 00 00 70 40 00 00 A ICD Date 2005 04 08 Interface Control Document Status Released From 64 Antenna Correlator Draft Pending Approved Released Superceded Obsolete Page 4of 15 To Computing Correlator Software 1 Description 1 1 Purpose The ALMA correlator processes signals from a total of 64 antennas in four separate correlator quadrants one quadrant for each of the four baseband pairs All four quadrants are controlled and monitored by a single Correlator Control Computer CCC Each individual quadrant produces data to be processed by a cluster of four Correlator Data Processing CDP computers 16 individual CDP computers total for the four correlator quadrants There is one additional Master CDP computer There is one backup CCC and one backup Master CDP computer These computers will normally be in a powered down state but physically connected to all necessary interfaces
8. ctors The breakout box converts the correlator quadrant 0 TE signal from internal correlator levels to TTL and buffers fans out the TTL signals to the two CCC computers The RESET signals from the two CCC computers are routed to a logical OR function in the breakout box that automatically responds to RESET signals from which ever CCC computer is active ALMA Project Doc ALMA 60 00 00 00 70 40 00 00 A ICD Date 2005 04 08 Interface Control Document Status Released From 64 Antenna Correlator Draft Pending Approved Released Superceded Obsolete To Computing Correlator Software Page 9 of 15 The RESET signals are converted from TTL levels to internal correlator levels in order to drive the correlator quadrants The breakout box provides pull up resistors of 4 7K on each RESET input signal The pin assignments on these interfaces are shown in the next table CORRELATOR PIN PCSIGNAL PC SIGNAL SIGNAL NAME DIRECTION NAME 1 RESET QCC QUADO 2 OUT DATAO RESET QCC QUADI 3 OUT DATAI RESET QCC QUAD2 4 OUT DATA2 RESET QCC QUAD3 5 OUT DATA3 6 OUT DATA4 7 OUT DATAS 8 OUT DATA6 9 OUT DATA7 TE 10 IN ACK 11 12 13 14 15 16 17 GROUND 18 25 Table 6 CCC Parallel Port Connector Pin Assignments The correlator IPT will provide the required set of cables for this interface consisting of two cables using mating male connectors and flat ribbo
9. d in section 3 1 2 consisting of two parallel port cables from the breakout box to the Master CDP and Backup Master CDP computers The parallel port DATAO DATA7 outputs are not used on this interface 4 CAN Node Assignments The CCC commands and monitors the correlator using two CAN buses per quadrant plus one CAN bus for the four Quadrant Control Cards Each CAN node is an internal peripheral of an Infineon C167 microprocessor ALMA Project Doc ALMA 60 00 00 00 70 40 00 00 A ICD Date 2005 04 08 Interface Control Document Status Released From 64 Antenna Correlator Draft Pending Approved Released Superceded Obsolete To Computing Correlator Software Page 12 of 15 4 1 CAN Bus Nodes in Station Racks One CAN bus per quadrant connects to the 16 Station Control Cards in a set of Station racks Refer to the referenced CAN Protocol Plan for the Station Control Card for the list of CAN node assignments The SET GET_MY_ANTENNAS protocol specifies the set of four antennas associated with CAN nodes 0 15 decimal on this bus These are the only nodes on this bus 4 2 CAN Bus Nodes in Correlator Racks The second CAN bus per quadrant connects to targets in the Correlator Racks and to the Data Interface Card nodes physically located in the CDP racks Refer to the referenced CAN Protocol Plan for the Long Term Accumulator LTA for the list of CAN node assignments for the LTA nodes CAN nodes 0 15 These assignmen
10. ect to the TE supplied by the Backend The duty cycle is 16 msec HIGH 32 msec LOW The positive going transition marks the timing event ALMA Project Doc ALMA 60 00 00 00 70 40 00 00 A ICD Date 2005 04 08 Interface Control Document Status Released From 64 Antenna Correlator Draft Pending Approved Released Superceded Obsolete To Computing Correlator Software Page 14 of 15 7 Bootstrap Operations TBD Bootstrap operations for the C167 processors on the control cards presently are only controlled by utility software on a PC when a card is first powered up for initial card checkout This provides low level flash based software in each card that may be used for downloading higher level code for normal operation of the card Bootstrap operations controlled by CCC would only be needed to change the low level code in the flash memory used by the C167 processors This should be so rare as to not require support from the CCC but the interface provides the capability Bootstrap sequences will require either that the CCC utilize the optional RS 232 serial interfaces described in Section 3 1 3 or that boot strap operations only be performed from a PC independent of CCC The CCC would only be able to simultaneously bootstrap every node on either the station bus or the correlator bus CCC will not have access to the QCC engineering terminal ports Bootstrap sequences would require that the CCC command the QCC to perfor
11. er is to provide conversion from internal correlator signal levels to TTL levels required by the computers 3 1 1 CCC CAN Buses 9 cable assemblies The CCC and Backup CCC computers each have nine CAN buses that connect together in pairs bus 0 from each computer form one pair etc to control the four correlator quadrants The following table identifies the nine pairs of CAN buses CCC CAN Backup CCC Breakout Control Correlator System Racks Bus CAN Bus Box Quadrant CAN Bus in Connector 0 0 J1 0 Station Racks 1 1 J2 0 Correlator Racks 2 2 J3 1 Station Racks 3 3 J4 1 Correlator Racks 4 4 J5 2 Station Racks 5 5 J6 2 Correlator Racks 6 6 J7 3 Station Racks 7 7 J8 3 Correlator Racks 8 8 J9 0 3 All 4 Quadrant Control Cards QCC on one CAN bus D Type9 D Type 9 pin D Type 9 pin pin male male male Table 3 CCC to Correlator CAN Cables The correlator IPT will provide the required set of cables for this interface This set of cables will consist of nine identical cable assemblies Each cable assembly will daisy chain three D Type 9 pin female connectors spaced to fit the three rack mount units The required 120 ohm 250 mw line to line termination will be installed in the D Type 9 pin connector shell at the CCC end of the cable furthest from the breakout box The pinout of each CAN connector is defined in the following table ALMA Project Doc ALMA 60 00 00 00 7
12. m the hardware level RESET BOOT steps after which CCC would use the asynchronous port to perform the bootstrap operations See the referenced users manual for the Infineon C167 processor for details of the bootstrap operations See the referenced C167 Software Projects Manual for additional details of the Minimon utility used when the bootstrap operations are performed from a PC CCC would need to implement a functional replacement for the windows based Minimon utility in order to perform the bootstrap operation Updates of the C167 code that is actually run following a RESET operation do not require bootstrap operations 8 Mechanical Interface The DPI and Breakout Box modules are standard 19 inch rack mount enclosures 2U high This enclosure is manufactured by Hammond part number RMCV1903BK1 There is one DPI module for each CDP computer four modules in each CDP rack There is single Breakout Box module for the CCC computers and one for the Master CDP computers ALMA Project Doc ALMA 60 00 00 00 70 40 00 00 A ICD Date 2005 04 08 Interface Control Document Status Released From 64 Antenna Correlator Draft Pending Approved Released Superceded Obsolete To Computing Correlator Software Page 15 of 15 9 Electrical Power Interface The DPI module contains a built in AC DC power supply requiring a universal AC input of 85 265 VAC 47 440 Hz In the initial prototype a standard 3 prong 115V 60Hz power co
13. n cable The cable lengths will be matched to the spacing of the three rack mount units 3 1 3 CCC RS 232 Serial Port Signals optional 8 cable assemblies Each correlator quadrant has two multi drop asynchronous serial port buses used for Engineering terminals Normally the CCC computer does not require access to these ports The CCC computer can fully control the correlator via the CAN buses for all operations except a low level bootstrap sequence that may only be performed via these asynchronous serial ports see Section 7 ALMA Project Doc ALMA 60 00 00 00 70 40 00 00 A ICD Date 2005 04 08 Interface Control Document Status Released From 64 Antenna Correlator Draft Pending Approved Released Superceded Obsolete To Computing Correlator Software Page 10 of 15 Optional access is provided for CCC to connect to either or both of these buses in order to provide the capability of performing a correlator bootstrap sequence One bus serves the Station racks and the second bus serves the Correlator racks including the Data Port Interface cards The control of access to these buses is by way of mechanical switches on the QCC cards Switch SW1 controls the Station bus and SW2 controls the Correlator bus These switches determine if the correlator ports are connected to the CCC access connectors defined in the following table or to the local Engineering terminals REF Description PCB Conn Cable Conn
14. olete To Computing Correlator Software Page 2 of 15 Change Record Version Affected ec Request Reason Initiation Remarks 2005 04 08 none First Issue ALMA Project Doc ALMA 60 00 00 00 70 40 00 00 A ICD Date 2005 04 08 Interface Control Document Status Released From 64 Antenna Correlator Draft Pending Approved Released Superceded Obsolete To Computing Correlator Software Page 3 of 15 Table of Contents 1 MCS Cra Uns e205 cae a iasccccieacedadendecdiain teen iciacieshiesealnbicolomciediauiecieineted aa a aT 4 EE Si ig 6c nenei eee en nee ey nee mee eee nen a e re RMT E ee 4 W2 SCOPE nene E E E ete eee ees 4 2 Related Documents and Drawyinies cccasecssncccnsssesedhacsevedeadseiaandasuresnanassassaadeatsnasvacsenssecaeds 4 Del RETErENCESecseeosororarrosonrenensy ieri o a E E E E E EE E a 4 2 1 1 CAN Protocol Definition Documents ssssssssssessseseseetesseessressresseersseressees 4 2 1 2 Correlator System Manuals sseneeeneeeesseeeesseesssessessseessseersseeessressesseesseeesseee 5 2 1 3 Commercial Off The Shelf COTS Documentation ccc cc ccceceeeeeeeeee 5 3 Physical Electronic Interface Details oseeneesseeeeeeeeeeeessresresserererressersrerreeseeseeseresee 6 Sad Correlator to COC Iter aCe s vc sn servanesacsantznvreenruaeduanncaveaanigedsuuneonivesaseanunaatasuraadiesens 6 3 1 1 CCC CAN Buses 9 cable assemblie
15. ption Physical Category CAN Bus CAN bus between computer and correlator 2 TE 48 msec time event from correlator to 2 computer RESET Hardware reset from computer to correlator 2 Engineering Optional RS 232 access for computer to 1 Terminal correlator for bootstrap operations access Correlator High data rate parallel output interfaces from 3 Output Data correlator to computer Table 2 Correlator to Computer Signal Types The signal interfaces consist of four different industry standard electronic signal levels CAN bus logic levels RS 232 single ended levels TTL single ended levels LVDS Low Voltage Differential Signaling levels 3 1 Correlator to CCC Interfaces The CCC and backup CCC computers will be installed in a single computer rack along with a single breakout converter box The 2U high breakout box will be installed either above or below the pair of CCC computers each CCC no more than 4U high which will be installed in adjacent vertical positions ALMA Project Doc ALMA 60 00 00 00 70 40 00 00 A ICD Date 2005 04 08 Interface Control Document Status Released From 64 Antenna Correlator Draft Pending Approved Released Superceded Obsolete To Computing Correlator Software Page 7 of 15 The breakout box to be designed provides two simple functions One function is to breakout multiple signals from internal correlator cables to individual computer connectors The oth
16. rd will be provided with the interface module The power supply is an Astrodyne Model AS 40 5 10 Thermal Interface The data interface module is cooled by an internal fan operated from the internal 5V power supply The fan is a Comair Rotron Model STOS5B3 11 Software Control Function Interface The control function protocols are defined in the referenced CAN Protocol Plan documents 12 Safety Interface The data interface module is subject to the same requirements for fire and earthquake hazard as the correlator as a whole as specified in ALMA 20 01 02 00 60 00 00 00 A ICD
17. s 7 3 1 2 CCC Time Event and RESET Signals 2 cable assemblies 8 3 1 3 CCC RS 232 Serial Port Signals optional 8 cable assemblies 9 3 2 Correlator to CDP Data Interfaces 16 commercial cable assemblies 11 3 3 Correlator to Master CDP Physical Interface 2 cable assemblies 11 A CAN Node Fi Ss CAS eiis n a E aa 11 4 1 CAN Bus Nodes in Station Racks ss ccsscssscssisscessesnsiadssssaiecsanesvensssnsccesasnsiedsanesdenses 12 4 2 CAN Bus Nodes in Correlator Racks siccatassivsancsniiastisandsasviatdcuiacdeadniontbasnisetsnancve 12 4 3 CAN Bus Nodes for Quadrant Control Cards ccccccecssccccececeesessnseceeeeeeeeeenes 12 5 RESET Signal Functional Details lt c descsactaqeasacdiaspivaesctnassenannsateeedvsa eased aausaassnaeeoseaes 13 0 TESignal F ctional Details ia soiececesccecieacenvineciaaredese dl cceetepededansedeuedaaniadameanleagthvetadaens 13 6 1 Timing Event to CCC and the Master CDP Computers 0 00 0 eeeeeeeeeneceeeeeeees 13 6 2 Timing Event to CDP Computers ssseesseereeseseesseseesresstssrestessesetesreeseestesreeseeseee 13 T Bootstrap Op rations TBD esise E A E een eAees 14 Mechanical Interfaces tieien aei E ER ERE E E RS 14 9 Electrical Power Libr ARS oivajseiessanceserentontivastevsacasncatnantenusacssmmaucamuvetossadaactereateusneas 15 10 Thermal Interface enren eer E E E ease G 15 11 Software Control Function Interface 0 eee eescecesece
18. ta Interfaces 16 commercial cable assemblies For each correlator quadrant there are four CDP computers interfaced to four correlator Data Port Interface DPI rack mount modules The four DPI modules are mounted in the same rack as the four CDP computers each DPI adjacent to the CDP to which it connects The CDP end of the data interface uses a commercial High Speed Parallel Digital Interface that installs in the PCI bus in the CDP computer This is a PCI64 HPDI32A PCI card from General Standards Corporation The interface signal levels are LVDS The physical cables between the correlator and the CDP computers are from the same commercial source as the PCI cards The cable is part number CABLE6 SH PCI64 HPDI32AL LVDS a six foot long cable using Robinson Nugent connectors on each end part number PSOE 080 S TG 50 mil twisted pair cable This cable mates with the 80 pin CDP interface connector and with the DPI board mount connectors Robinson Nugent part number PS5OE 080 P1 SR1 TG The cables are provided by the computer IPT See the referenced users manual for the PCI64 HPDI32A interface card for the specific pinout of the 80 pin connector The cable provides a 1 to 1 straight through connection 3 3 Correlator to Master CDP Physical Interface 2 cable assemblies There is only one interface signal between the correlator and the Master CDP computers This is the TE signal The interface is identical to the CCC Time Event interface covere
19. ts are specified in the SET GET_MY_ACCUM_PLANES and SET GET_MY_CONTROL_PLANES protocols for CAN nodes 0 15 decimal The CAN bus in the Correlator racks has six additional nodes CAN NODE dec TARGET 16 Final Adder Card A Final Adders 0 amp 3 17 Final Adder Card B Final Adders 1 amp 2 24 Data Interface 0 25 Data Interface 1 26 Data Interface 2 27 Data Interface 3 4 3 CAN Bus Nodes for Quadrant Control Cards One Can bus from the CCC is dedicated to the four QCC cards one in each quadrant The CAN node assignments are listed in the following table CAN NODE dec TARGET 20 QCC in Quadrant 0 21 QCC in Quadrant 1 22 QCC in Quadrant 2 23 QCC in Quadrant 3 ALMA Project Doc ALMA 60 00 00 00 70 40 00 00 A ICD Date 2005 04 08 Interface Control Document Status Released From 64 Antenna Correlator Draft Pending Approved Released Superceded Obsolete To Computing Correlator Software Page 13 of 15 5 RESET Signal Functional Details The RESET signals are provided to allow the CCC to reset the QCC C167 microprocessors The CCC can directly reset the Quadrant Control Card nodes Reset of either or both of the Station and Correlator rack CAN nodes may be accomplished via CAN protocol commands to be defined in the QCC CAN protocol All CAN nodes on a bus either Station or Correlator are reset globally from the QCC One possible option is that
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