HUNT ENGINEERING CPCI9
Contents
1. Arbitrary choice Ch1 PCI connection 17 HUNT ENGINEERING CPCI9 EM2 USER MANUAL Programming of this functionality is straightforward The host resets each of the HECPCI9s and configures each HEART network The modules on each board can communicate with each other via the EM2 connections and can communicate with the Host PC via their PCI interfaces In th2. HECPCI9 Board 1 PCI connection 21 HUNT ENGINEERING CPCI9 EM2 USER MANUAL Programming of this functionality is straightforward but some care must be taken over when each system is started Each host resets its HECPCI9 and configures its HEART network Once running the modules on each board can communicate with each other via the EM2 connections and can communicate with the Host PC via their PCI interfaces In this case each boards will have its own network file and Heartconf or Setver Loadet can configure each of them individually Now it is important to design your system correctly to avoid problems that can arise if data is sent to a system before it is booted The act of booting the second half will mean that data is lost because of the reset and when that system is started you will not know where the data will start Netwotk files for the above system could be BD API Board_type Board Id Device Id 4 Using API BD API HEP9A O DoD MT ML AT M D CC IM E Tx yea TEMP UE Nodes description ND BD nb ND NAME ND Type HERON ID filename s
3. O a re eh ee oe en ep ae c6 0 HERONA ROOT 00000002 board0d out Host interface 0 hostA normal 0x05 HEPC9 inter board modules currently EM1 C or EM2 em2 0 em2A normal 0x06 from slot fifo to slot fifo timeslots DLE EEEL A ED EE PD WE RI HE EE Gas ee EPOD oe ee Create a connection between host fifo 0 and the C x fifo 0 It uses 1 timeslot The precise timeslot is chosen by Server Loader or HeartConf heart hostA 0 heronA 0 1 And create a connection back from the C6x fifo 0 to the host fifo 0 heart heronA 0 hostA 0 1 create the connections from the DSP modules to each other via the EM2 heart heronA 1 em2A 0 1 heart em2A 0 heronA 1 1 And for the second board BD API Board type Board Id Device Id 4 Using API BD API HEP9A 1 0 Nodes description 22 HUNT ENGINEERING CPCI9 EM2 USER MANUAL ND BD nb ND NAME ND Type HERON ID filename 5 c6 1 HERONB ROOT 0x14 boardl out Host interface peif 1 hostB normal 0x15 HEPC9 inter board modules currently EM1 C EM1 or EM2 em2 1 em2B normal 0x16 from slot fifo to slot fifo timeslots d Create a connection between host fifo 0 and the C6x fifo 0 It uses 1 timeslot The precise timeslot is chosen by Server Loader or HeartConf heart hostB 0 her
4. 7 MODULE FEATURES v 8 HEART CONNECTIONS A eto te e e ce Pe 8 M 9 GIGABIT SERTAL CONNECTIONS S 9 GIGABIT SERIAL CABEING 5 teeth EPOR EON URP ND 9 HERON SERIAL BUS eerte RO er 10 rne IRE pee Pei 10 MODULE ID e c M 11 UMT CONNECTIONS Ree TRE EC D CUR ERE TURNO D OTRO eee 11 IBIDEM 11 8 ae vo erroe eaae e 12 HERON MODULE TYPE P RERO 12 HARDWARE RESET eet entire e Fe ee EINE ARIA FUR De FIERE ERST E 12 E 12 PHYSICAL DIMENSIONS OF THE MODULE nein enne nnn 12 POWER REQUIREMENTS OF THE CPCI9 EM2 13 Calculating Latency when using the 13 Serial char cteristics ce e lette terret ien eee Aen 14 FITTING THE CPCI9 EM2 TO YOUR COMPUTER ecce eee eee enne oe eee ene 15 ACHIEVABLE SYSTEM THROUGHPUT eee eeeeeeee ee esee esteso seen soo 16 EXAMPLE 8 1 440 ee esee teen snos 17 Examplel two or more boards in the same host PC booted as one system method A 17 Ex
5. Reset The reset signal from the carrier board is driven into the CPCI9 EM2 to initialise internal logic Additionally transitions of the reset signal are detected and codes for these transitions are sent to other CPCI9 EM2s that may be connected via the gigabit serial connections This allows a system wide reset to be selected if required and this signal is then encoded on the same cable connection as the data Gigabit Serial Connections Each connection provides a differential PECL transmit pair and a differential receive pair These may connect directly to another CPCI9 EM2 with cables provided by HUNT ENGINEERING The serial data rate of each channel is 1 25Gbits per second This equates to 125Mbytes per second These serial connections are mainly used to provide point to point connections between two more HECPCI9s By appropriate programming of control registers of the carrier board and the CPCI9 EM2s data may be routed between HERON modules that are on different HECPCI9s in much the same way as if they were on the same HECPCI9 It should be noted that the data bandwidth available for a serial channel is 125Mbytes per second while it is possible for inter node communications on the same carrier to exceed this figure Therefore the system topology should be chosen so that any datapaths where the sustained data rate may exceed 125Mbytes sec are constrained to be on the same carrier board Data to be transmitted is routed fro
6. TERI 1 Gigabit serial connectors 3 4 Bw Gigabit serial transceivers HUNT ENGINEERING CPCI9 EM2 USER MANUAL Getting Started The CPCI9 EM2 is a module that plugs into a Reat panel I O slot of a CompactPCI host computer for connection to the HECPCI9 HERON Module Carrier in the corresponding Peripheral slot The CPCI9 EM2 should be fitted to the host computer along with any other carriers and their modules that your system has and their retaining nuts fitted see a later section of this manual for details The connections provided by the CPCI9 EM2 are point to point and appear as FIFOs in the HEART system Where you fit the cables is what determines the boards that are connected and the FIFO numbers that will be used Each cable can make a connection in both directions Because the connection can be programmed to propagate the hardware reset it is possible to boot the remote or slave boards in the system over the CPCI9 EM2 connection when using the Server Loader program Because the connections ate also able to carry the HSB connections it is also possible to configure FPGAs over this connection In that case the Server Loader will properly start the system If however you choose to boot the systems at the different ends of the CPCI9 EM2 connection separately the CPCI9 EM2 should not propagate the reset and HSB between the systems In that case the connection can be used to send and receive data but careful
7. ZAP Heart register Additionally bit 6 of each register is used to program the blocking mode of the transmit channels By default this bit is set to 0 which means that data is blocked in the heart system on any timeslot that is sending to this channel when the transmit FIFO becomes full For certain applications this bit may be programmed to 1 which allows data to continue flowing in those timeslots even when the transmit FIFO is full In this mode data may be lost but soon as the FIFO can accept more data the new data from the timeslots is more recent Address 6 Tx channelO Timeslot Register 6 0 Address 7 Tx channell Timeslot Register 6 0 Address 8 Tx channel2 Timeslot Register 6 0 Addtess 9 Tx channel3 Timeslot Register 6 0 Address 10 Tx channe4l Timeslot Register 6 0 Address 11 Tx channel5 Timeslot Register 6 0 29 HUNT ENGINEERING CPCI9 EM2 USER MANUAL Receive channel reset with UMI registers Each of the six receive channels may have their data FIFOs reset flushed by an active low assertion of any of the 4 UMI signals Uncommitted Module Interconnects This feature may be useful when the non blocking mode of the transmit channel is used Only the least significant 4 bits are used Bit 0 is set to make UMIO reset the FIFO bit 1 for bit 2 for UMI2 and bit 3 for UMI3 Multiple bits may be set so that more than one UMI signal may reset the FIFO This register is
8. as soon as work on those features are completed 20 HUNT ENGINEERING CPCI9 EM2 USER MANUAL Example2 two or more boards in the same host PC booted separately This example is a quite simple extension of the example above The two HECPCI9s are in different host machines and are each booted and their HEART connections configured separately There is no need for reset or HSB propagation Arbitrary choice HECPCI9 Board 0 PCI connection Arbitrary choice Ch1
9. be required between a pair of HECPCI9s In other applications where multiple data paths exist between HECPCI9s multiple serial links may be used In addition to the internode data the CPCI9 EM2 also transmits the state of the HECPCI9 s reset signal over any connected serial links to other CPCI9 EM2s These other remote EM2 s may be programmed over the HSB to propagate the state of the received reset onto the UDPRESET of the remote HECPCI9 thus providing the function of remote resetting The CPCI9 EM2 may also be programmed again over the HSB to propagate HSB messages over the serial links It is therefore possible to perform all HSB functions on a remote HECPCI9 such as heart configuration module queries and any other arbitrary HSB messaging The CPCI9 EM2 module connects to the HECPCI9 through several standard interfaces e The first is directly into the Heart architecture The FIFO input and output interfaces ate embedded into the CPCI9 EM2 itself This is used for the main inter node communications e The second is the HERON Serial Bus used for configuration messages The last is the general control such as reset power etc 5 HUNT ENGINEERING CPCI9 EM2 USER MANUAL 3 POWER SUPPLY LEDs Location of Items on the CPCI9 EM2 Heart Connecto a 5 d oO E T Power circuit Power circuit FPGA DONE LED JTAG connector For Power Hunt use only circuit Channels d
10. cleared at reset Address 12 Channel 0 Receive FIFO reset with UMI 3 0 Address 13 Channel 1 Receive FIFO reset with UMI 3 0 Address 14 Channel 2 Receive FIFO reset with UMI Address 15 Channel 3 Receive FIFO reset with UMI 3 Address 16 Channel 4 Receive FIFO reset with UMI Address 17 Channel 5 Receive FIFO reset with UMI Transmit channel reset with UMI registers Each of the six transmit channels may have their data FIFOs reset flushed by an active low assertion of any of the 4 UMI signals Uncommitted Module Interconnects This feature may be useful when the non blocking mode of the transmit channel is used Only the least significant 4 bits are used Bit 0 is set to make UMIO reset the FIFO bit 1 for bit 2 for UMI2 and bit 3 for UMI3 Multiple bits may be set so that more than one UMI signal may reset the FIFO This register is cleared at reset Address 18 Channel 0 Transmit FIFO reset with U MI Address 19 Channel 1 Transmit FIFO reset with U MI Address 20 Channel 2 Transmit FIFO reset with UMI Address 21 Channel 3 Transmit FIFO reset with U MI Address 22 Channel 4 Transmit FIFO reset with U MI Address 23 Channel 5 Transmit FIFO reset with U MI ZAP Heart Register This register is used as an easy means of clearing all timeslot bits that may be programmed in the Transmit channel timeslot registers and Receive channel timeslot registers No data bits are used a write access alone clears all
11. data rate were sustained the FIFOs inside the CPCI9 EM2 would eventually fill In this scenario the EM2 may be programmed to either block the incoming data from being put onto the heart system or to simply lose data when the internal FIFO is full 16 HUNT ENGINEERING CPCI9 EM2 USER MANUAL Example configurations Example1 two or more boards in the same host PC booted as system method A This example shows the simplest use of the CPCI9 EM2 where there are two HECPCI9s in the same host machine These two boards can be booted separately routing their own connections to theit EM2 modules There is no need for reset or HSB propagation HECPCI9 Board 0 PCI connection
12. for any particular purpose In event shall HUNT ENGINEERING S liability related to the product exceed the purchase fee actually paid by you for the product Neither HUNT ENGINEERING nor its suppliers shall in any event be liable for any indirect consequential or financial damages caused by the delivery use or performance of this product Because some states do not allow the exclusion or limitation of incidental or consequential damages or limitation on how long an implied warranty lasts the above limitations may not apply to you TECHNICAL SUPPORT Technical support for HUNT ENGINEERING products should first be obtained from the comprehensive Support section http www hunteng co uk support index htm on the HUNT ENGINEERING web site This includes FAQs latest product software and documentation updates etc Or contact your local supplier if you are unsure of details please refer to http www hunteng co uk for the list of current re sellers HUNT ENGINEERING technical support can contacted by emailing support hunteng co uk calling the direct support telephone number 44 0 1278 760775 ot by calling the general number 44 0 1278 760188 and choosing the technical support option 2 HUNT ENGINEERING CPCI9 EM2 USER MANUAL TABLE OF CONTENTS INTRODUCTION estere eo T 5 LOCATION OF ITEMS ON THE 19 2 2 1 1 1 07 41 4 4 1 1 6 GETTING STARTED 5eieeiee ra
13. 12 registers Address 24 Zap Heart Control Reset propagation register This six bit register to determine which receive channels propagate a received reset condition from a remote carrier onto the UDP Reset of the carrier that the CPCI9 EM2 is 30 HUNT ENGINEERING CPCI9 EM2 USER MANUAL plugged into which will reset the whole carrier board This function will only normally be used on a slave or remote carrier that is NOT being reset by a host process and this register will therefore normally be programmed from the master cartier over one of the serial links Only the least significant 6 bits are used Setting bitO allows a reset to propagate from channel 0 up to bit 5 to allow a reset to propagate from channel 5 Naturally these bits are NOT cleared at reset They are just initialised to 0 at power up Address 25 Reset propagation 5 0 HSB propagation registers These 1 bit registers are used to control whether or not a transmit channel will send HSB messages over its serial link to another CPCI9 EM2 Only bit 0 is used setting bit 0 will allow HSB propagation These bits are NOT cleared at reset They are just initialised to 0 at power up Additionally all six registers may be cleared using the Zap HSB Propagation Control Address 26 Transmit channel 0 HSB propagation Address 27 Transmit channel 1 HSB propagation Address 28 Transmit channel 2 HSB propagation Address 29 Transmit channel 3
14. ERING CPCI9 EM2 USER MANUAL The standard cable supplied with CPCI9 EM2 For connections outside of the PC more substantial cabling is necessary The cabling used must be specifically optimised for Gbit serial transmission in both directions line cables normally intended for Fibre Channel applications which despite its name is actually copper cable connections HUNT ENGINEERING can manufacture cables that take the EM2 connections to a 9 way D type connector that can be fitted to the backplate of your PC Then standard Fibre Channel cables which can be purchased from HUNT ENGINEERING or your local HUNT ENGINEERING supplier can be fitted directly to those 9 way D types Heron Serial Bus The Heron Serial Bus connects to the CPCI9 EM2 not only so that its internal registers may be programmed with it but also so that HSB messages may be sent between HECPCI9s via the gigabit serial connections This bridging of the HSB is achieved by use of some of the spare 10 bit codes to transmit the various states of the local Heron Serial Bus to the remote CPCI9 EM2 which in turn masters the remote HSB with identical bus behaviour The propagation of HSB messages is programmable for each channel This programming is made using the Heartconf software utilty The propagation of HSB across multiple boards is optional but if selected this connection is then encoded on the same cable connection as the data The CPCI9 EM2 also responds to HSB Modul
15. HSB propagation Address 30 Transmit channel 4 HSB propagation Address 31 Transmit channel 5 HSB propagation ZAP HSB propagation control This register is used as an easy means of clearing all six HSB Propagation Registers No data bits are used a write access alone clears all 6 registers Addtess32 Zap HSB Propagation Control 31 HUNT ENGINEERING 9 2 USER MANUAL Appendix 3 Gigabit serial Connector pinout The serial I O connectors ate pinned out so that the corresponding rx and tx pairs for one channel are housed in the same connector shell The figure below shows the view looking onto the right hand edge of the CPCI9 EM2 5585556 800000 000000 000000 00900009 000000 The pinout for each serial channel is as follows Pin number Function 1 Tx Tx Polarising pin 2 3 4 GND 5 6 Rx Rx 32 HUNT ENGINEERING CPCI9 EM2 USER MANUAL
16. HUNT ENGINEERING Neste Chestnut Court Burton Row treme AI r Brent Knoll Somerset TA9 4BP UK Tel 44 0 1278 760188 Fax 44 0 1278 760199 Email sales hunteng co uk http www hunteng co uk http www hunt dsp com HUNT ENGINEERING 9 2 Inter board module USER MANUAL Hardware Rev B Document Rev D M Siggins 24 7 03 COPYRIGHT This documentation and the product it is supplied with are Copyright HUNT ENGINEERING 2002 All rights reserved HUNT ENGINEERING maintains a policy of continual product development and hence reserves the right to change product specification without prior warning WARRANTIES LIABILITY and INDEMNITIES HUNT ENGINEERING warrants the hardware to be free from defects in the material and workmanship for 12 months from the date of purchase Product returned under the terms of the warranty must be returned carriage paid to the main offices of HUNT ENGINEERING situated at BRENT KNOLL Somerset UK the product will be repaired ot replaced at the discretion of HUNT ENGINEERING Exclusions If HUNT ENGINEERING decides that there is any evidence of electrical or mechanical abuse to the hardware then the customer shall have no recourse to HUNT ENGINEERING its agents In such circumstances HUNT ENGINEERING may at its discretion offer to repair the hardware and charge for that repair Limitations of Liability HUNT ENGINEERING makes no warranty as to the fitness of the product
17. TE 30 3 HUNT ENGINEERING CPCI9 EM2 USER MANUAL RESET PROPAGATION REGISTER HSB PROPAGATION REGISTERS ect ee retired ive rte eire Petre o E Pe e parre eee 31 ZAP HSB PROPAGATION 2 2 1202000000000000000000000000000100000 31 APPENDIX 3 GIGABIT SERIAL I O CONNECTOR PINOUT 32 4 HUNT ENGINEERING CPCI9 EM2 USER MANUAL Introduction The CPCI9 EM2 is a module designed specifically for use with Hunt Engineering HECPCI9 Heron Module Carriers to provide point to point communication between HECPCI9s and HEPC9s The CPCI9 EM2 plugs into a Rear panel I O slot of a CompactPCI host computer such that it connects to the rear panel I O connections of an HECPCI9 that is plugged into the corresponding Peripheral Slot The J4 connector of the HECPCI9 is designed for external modules to connect to the Heart architecture of the HECPCI9 so that connections of the inter node data may be made from one HECPCI9 to another The J4 connections are simply bypassed when there is no CPCI9 EM2 fitted to it The interboard connectivity is achieved with up to six 1 25 Gigabit bi directional links over which the inter node fifo data may be passed The serial link connections between HECPCI9s may be made according to the connectivity requirements of the end system For example it is possible that only one serial link may
18. ages 28 HUNT ENGINEERING CPCI9 EM2 USER MANUAL Appendix 2 Internal Register Description The internal registers of the CPCI9 EM2 are programmed via the Heron Serial Bus HSB Receive channel timeslot registers Each of the six receive channels of the CPCI9 EM2 may be individually programmed to output received data into any timeslot of the local Heart system Only the least significant six bit are used bit 0 is set to use timeslot 0 bit 1 for timeslot 1 up to bit 5 for timeslot 5 The use of multiple timeslots is allowed although the use of more than two timeslots has no benefit as the serial transceivers cannot receive data fast enough to fully utilise the bandwidth of two timeslots These bits are cleared at reset and by an access to the ZAP Heart register Address 0 Rx channelO Timeslot Register 5 0 Address 1 Rx 1 Timeslot Register 5 0 Address 2 Rx channel2 Timeslot Register 5 0 Address 3 Rx channel3 Timeslot Register 5 0 Address 4 Rx channel4 Timeslot Register 5 0 Address 5 Rx channel5 Timeslot Register 5 0 Transmit channel timeslot registers Each of the six transmit channels of the CPCI9 EM2 may be individually programmed to read data from any timeslot of the local Heart system for transmission Only the least significant six bit are used bit 0 is set to use timeslot 0 bit 1 for timeslot 1 up to bit 5 for timeslot 5 These bits are cleared at reset and by an access to the
19. al slot that you wish to connect to This slot should also have sufficient space around it for any cables that you have If you do not have a backplane fitted to your rack you can use the supplied connectors to directly connect the CPCI9 EM2 to the HECPCI9 board Push the CPCI9 EM2 into the chosen slot ensuring that it locates in the top and bottom guides Push the CPCI9 EM2 fully home DO NOT use excessive force on either the CPCI9 EMZ or the rack Switch the power on and it should boot normally If it doesn t then re check that the CPCI9 EM2 is pushed fully home in the host computer 15 HUNT ENGINEERING CPCI9 EM2 USER MANUAL Achievable System Throughput In a HERON system there are many factors that can affect the achievable system throughput It must be remembered at all times that the part of the system that has the lowest limit on bandwidth will govern the throughput of the system The CPCI9 EM2 can access its internal Heart FIFOs in 32 bit mode while the serial channels can access the same FIFOs at 125Mbytes sec For example if a particular CPCI9 EM2 channel is programmed to read data from one timeslot a heart system that is running at 100MHz it will be taking data from the heart architecture at 66 6Mbytes sec The serial channel will be running at just over half capacity If however a channel is programmed to use two timeslots it is possible for data to be read from the heart system at 133 3Mbytes sec If this
20. amplela two or more boards in the same host PC booted as one system method B 20 Example2 two or more boards in the same host PC booted separately sss 21 Example3 two or more boards in different host PCs booted 23 Example4 two or more boards in different host PCs booted as one 23 Example5 more than two boards in a system booted separately see 24 TROUBLESHOOTING eese esee oso ee ee ER vo eoi eo nor Eoo 25 vip i 25 SOFTWARE ceret RR OO T CIERRE DER CT RO EOD E Cre 25 CE MARKING aida QS Lee Soro 26 TECHNICAL SUPPORCE 27 APPENDIX 1 HERON SERIAL BUS COMMANDS 28 MODULE ADDRESS dk oe tere Pese rodea Roe Ae EA ena ean 28 MODULE QUERY ent ae ER Eton AU teet bentes tas 28 INTERNAL REGISTER PROGRAM etii desereret ede 28 APPENDIX 2 INTERNAL REGISTER DESCRIPTION eee ee eee 2 29 RECEIVE CHANNEL TIMESLOT REGISTERS 29 TRANSMIT CHANNEL TIMESLOT 8 5 29 RECEIVE CHANNEL RESET WITH UMI REGISTERS nennen 30 TRANSMIT CHANNEL RESET WITH UMI REGISTERS 30 ZAP HEART REGISTERS 42 or aro iron aro T Op RT
21. as it is a component in a system but as long as the following recommendations are followed a system containing the CPCI9 EM2 could be CE marked The immense flexibility of the HUNT ENGINEERING product range means that individual systems should be marked in accordance with the directives after assembly 1 The host computer or housing in which the CPCI9 EM2 is installed is properly assembled with EMC and LVD in mind and ideally should itself carry the CE mark 2 Any cabling between boards or peripherals is either entirely inside the case of the host computer or has been assembled and tested in accordance with the directives The CPCI9 EM2 serial I Os ARE protected against Static discharge so if the cabling does exit the case there is suitable protection already fitted HUNT ENGINEERING are able to perform system integration in accordance with these directives if you are unsure of how to achieve compliance yourself 26 HUNT ENGINEERING CPCI9 EM2 USER MANUAL Technical Support Technical support for HUNT ENGINEERING products should first be obtained from the comprehensive Support section http www hunteng co uk support index htm on the HUNT ENGINEERING web site This includes FAQs latest product software and documentation updates etc Or contact your local supplier if you are unsure of details please refer to http www hunteng co uk for the list of current re sellers HUNT ENGINEERING technical support can contacted by emai
22. consideration must be given to the synchronisation of those two systems If for example the first system booted immediately starts to send data on a connection it is probable that the other system will not yet be configured to receive When that second system is booted it will be reset and its connections configured before it will be ready to send and or receive data During that reset and configuration phase data will probably be lost from the system It is important that your application software correctly handles this situation There is a setvet loader example on the HUNT ENGINEERING CD that demonstrates one possible way of handling this Of course different applications will need to find different solutions The Gbit connection is designed to be totally reliable However if the cable is routed outside of your PC it could be disturbed by noise or movement of the cable In that case the connection should recover and work properly afterwards but data could be lost gained corrupted during the disturbance If your system is intended to run for long periods of time then you should build something into your application programs that can detect and recover from such a disturbance The connections to and from the CPCI9 EM2 are programmed using the standard Heartconf tool at the same time as your other HEART connections You can refer to the separate user manual for Heartconf and the Network File syntax to find the full details but there ate some
23. e Query commands UDPReset Changes in the state of the reset signal are transmitted by a CPCI9 EM2 using spare 10 bit codes The UDPReset signal is output from the receiving CPCI9 EM2 onto its HECPCIO The UDPReset is asserted low by the CPCI9 EM2 when a serial channel receives an active reset condition AND that channel is programmed to propagate the reset locally This feature may be used where one HECPCI9 may be remote and or host less so that it may be reset by its UDPReset in this way 10 HUNT ENGINEERING CPCI9 EM2 USER MANUAL Module ID The HERON specification assigns pins on the HERON module that give a HERON module access to the carrier ID of the carrier that it is plugged into and a unique HERON slot identifier The External Module slot of the HECPCI9 also has its unique module ID so that an external module such as the 19 2 is addressed on Heron Serial Bus HSB using this information UMI connections The CPCI9 EM2 connects to the UMI Uncommitted Module Interconnect signals of the HECPCI9 so that they may be used to flush a FIFO when it is used in the non blocking mode This feature is sometimes useful in applications where it is not necessary to receive all data that is sent For example if live video data is being transmitted through the architecture and a particular module s requirement is to occasionally receive the next frame of video In this scenario the CPCI9 EM2 could be programmed to flush the rel
24. evant FIFOs when a particular UMI signal is asserted low to get rid of old data Each transmit and each receive FIFO may be individually programmed to be reset by any UMI signal Multiple UMI signals may be used to reset a FIFO Done LED There is a Done LED labelled DONE It is illuminated if the FPGA is not configured The DONE led should illuminate briefly at power on and then go out showing that the FPGA is correctly configured 11 HUNT ENGINEERING 9 2 USER MANUAL Hardware Details HERON Module Type The CPCI9 EM2 module is of type Expansion module The CPCI9 EM2 does not have a processor so does not assert the Module has processor pin as defined in the HERON specification The CPCI9 EM2 does not support JTAG so does not assert the Module has JTAG pin as defined in the HERON specification The CPCI9 EM2 has a serial bus so asserts the Module has serial bus pin as defined in the HERON specification Hardware Reset Before CPCI9 EM2 can be used it must be reset This reset initialises the Heron Serial Bus circuitry into a state where it can be used Depending on how this and any other CPCI9 EMGs in the system have been programmed this local reset may also reset other CPCI9 EMGs and their module carriers and similarly a reset on a remote carrier may cause a reset to be propagated locally This signal is driven by the HECPCI9 Config The CPCI9 EM2 does not connect to t
25. examples later in this manual that show the typical uses 7 HUNT ENGINEERING CPCI9 EM2 USER MANUAL Module Features This section describes the features of the CPCI9 EM2 and why they are provided Power Gigabit Serial Cable Connections Supply Ccts Serial Serial Serial Serial Serial Serial HERON Transceiver Transceiver Transceiver Transceiver Transceiver Transceiver Serial Bus Module ID Reset UDPReset UMI 2 X gt E3 Tx Fifo 1 Rx Fifo 1 Tx Fifo 2 Rx Fifo 2 Tx Fifo 3 Rx Fifo 3 Tx Fifo 4 Rx Fifo 4 Tx Fifo 5 Rx Fifo 5 HEART CONNECTIONS Heart Connections The External Ring Module slot on a HECPCI9 is bypassed when there is no CPCI9 EM2 module fitted into its I O slot All external modules break into the heart architecture and become part of it when they are plugged in and the module itself provides the Heart functionality for this slot This feature is transparent to the user as the number of registers on the HEART ring is the same with and without the CPCI9 EM2 Programming of data paths between the Heart architecture and the CPCI9 EM2 is exactly the same as for other module slots on the carrier board No further detail is supplied here as the heartconf software tool provided by HUNT ENGINEERING will be used For reference only the full description and addresses of the timeslot registers is detailed in the Appendix HUNT ENGINEERING CPCI9 EM2 USER MANUAL
26. he ADDITIONAL latency in using an EM2 in the data path will be 386nS to 436nS 21 M 10nS 22 8nS Where M 0 to 5 So for modules on different carrier boards minimum latency is achieved with fastest FIFO clocks the sending module in the slot immediately upstream of the sending EM2 AND the receiving module in the slot immediately downstream of the receiving EM2 The times will be 646nS to 746nS 6 x 10nS 41 M 10nS 22 x 8nS where M 0 to 10 The maximum latency will occur with the slowest FIFO clocks the sending module in the slot immediately DOWNstream of the sending EM2 AND the receiving module in the slot immediately UPstream of the receiving EM2 The times will be 1086nS to 1186nS 6 x 16 6nS 41 M x 10nS 4 x 10 x 10nS 22 x 8nS where M 0 to 10 Serial I O characteristics The serial I O is compatible with the differential PECL standard but is intended only for connection to another EM2 module 14 HUNT ENGINEERING CPCI9 EM2 USER MANUAL Fitting the CPCI9 EM2 to your computer Fitting a CPCI9 EM2 module to your Compact PCI machine is very simple Ensure that the computer does NOT have power applied when fitting modules or carrier boards and normal anti static precautions should be followed at all times The CPCI9 EM2 is supplied with a standard front panel and ejector handles The use of these is optional Choose the reat panel I O slot that corresponds with the HECPCI9 peripher
27. he config signal Physical Dimensions of the Module The CPCI9 EM2 module is 80mm by 233 35mm overall The 3 12mm limit on component height under the module is not violated by the CPCI9 EM2 The maximum height of the CPCI9 EM2 above the module including mating connectors and cables is 14 5mm This means that the 13 71mm limit on component height IS violated and also that the assembly of a HECPCI9 module carrier and the CPCI9 EM2 is MORE than the 20mm single slot spacing of CompactPCI 12 HUNT ENGINEERING CPCI9 EM2 USER MANUAL The arrangement of cabling with the CPCI9 EM2 The Gbit connectors of the CPCI9 EM2 finish level with where the edge of the board would be and are therefore inside the panel that may be fitted The mating connectors however will occupy the space outside of the panel Power Requirements of the CPCI9 EM2 The CPCI9 ENZ only uses power from the 5V HECPCIO9 supply The 3 3V and 1 5V for the FPGA and the 2 5V for the serial transceivers are generated on board from this 5V The power demands of the CPCI9 EM2 are governed by the amount of data flowing into and out of the serial channels and also the amount of data flowing around the local Heart architecture The maximum current for worst case test patterns is approximately 1 5A on the 5V input Calculating Latency when using the EM2 One feature of HEART is that the latency of a communication is controlled within limits that can be calculated The way
28. ion between host fifo 0 and the C6x fifo 0 It uses 1 timeslot The precise timeslot is chosen by Server Loader or HeartConf heart hostA 0 heronA 0 1 heart hostB 0 heronB 0 1 And create a connection back from the C6x fifo 0 to the host fifo 0 heart heronA 0 hostA 0 1 18 HUNT ENGINEERING CPCI9 EM2 USER MANUAL heart heronB 0 hostB 0 1 create the connections from the DSP modules to each other via the EM2 heart heronA 1 em2A 0 1 heart em2A 0 heronA 1 1 heart heronB 1 em2B 1 1 heart em2B 1 heronB 1 1 For full details of the syntax refer to the network file description document but notice the correct connection to FIFOO on the first EM2 module and FIFO1 on the second This must reflect where the cable is plugged Notice also that the cable carries data in both directions The system is now ready for use by the application A Virtual FIFO exists in each direction between the two boards and can be used in the same way that a virtual FIFO connection 15 used between modules on the same board 19 HUNT ENGINEERING CPCI9 EM2 USER MANUAL 1 two or more boards in the same host PC booted as one system method B The hardware supports connecting the reset and HSB across multiple boards Using this technique it is possible to boot and configure a multi board system as if it were one board Currently Jan 2003 the Server Loader and Heartconf does not support this technique but it will be possible
29. is case both boards can appear in the same network file and Heartconf or Server Loader can configure both of them at the same time Using the Server Loader is the safest way to configure such a system as it will follow this sequence Reset Both boards Configure FPGA modules on both boards if any defined in the network file Reset both boards to ensure any FPGA modules are initialised Make HEART connections for booting DSPs Boot DSPs on both boards Re configure both HEART networks to match the network file Use HSB to inform DSPs on both boards that they can start This sequence is important as if one board were to be initialised and allowed to run before the other board was configured then any data sent could be lost and the results after configuring the second board are undefined A network file for the above system could be BD API Board type Board Id Device Id 4 Using API BD API HEP9A 0 0 BD API HEP9A 1 0 Dr a we Pe iat me EAE Nodes description ND BD nb ND NAME ND Type HERON ID filename s EN CS c6 0 HERONA ROOT 00000002 board0d out c6 1 HERONB ROOT 0x13 boardl out Host interface pcif 0 hostA normal 0x05 pcif 1 hostB normal 0x15 HEPC9 inter board modules currently EM1 C EM1 or EM2 em2 0 em2A normal 0x06 em2 1 em2B normal 0x16 from slot fifo to slot fifo timeslots Fe shee ce N EE ME Md LEE Ee eee ce d Create a connect
30. ling support hunteng co uk calling the direct support telephone number 44 0 1278 760775 ot by calling the general number 44 0 1278 760188 and choosing the technical support option 27 HUNT ENGINEERING CPCI9 EM2 USER MANUAL Appendix 1 HERON Serial Bus Commands Module address The CPCI9 EM2 is configured to respond to Heron Serial Bus HSB commands addressed to it using the combination of the Board number and slot number that the module is fitted to In this way all modules can be uniquely addressed in the same system The HSB address is a 7 bit address that is formed by the bottom three bits of the slot number with the 4 bits from the board number switch forming the top 4 bits of the seven e g on board number 1 slot 6 the address would be board number lt lt 3 slot 2 0 which is OxOE The CPCI9 EM2 can respond to two different types of serial bus commands Module Query The CPCI9 EM2 can receive a message requesting its module type Master to EM2 module module type query 01 gt address of requestor It will then send a reply as follows EM2 module to original master module query response 02 gt module address from gt module type 05 gt family number 02 gt option Internal Register Program The Configuration transaction will be Master to EM2 module Register write 07 gt address of register gt data gt address of tegister2 gt data2 There is no reply to register program mess
31. m the heart architecture and split into 8 bit bytes These bytes are then converted into 10 bit codes which are then serialised and transmitted At the receive end the data stream is de serialised into 10 bit codes converted back into 8 bit data bytes then 32 bit words and then fed into the heart architecture The 10 bit encoding is done for two reasons firstly so that the serial data stream is edge rich to make clock recovery practical and secondly to maintain the DC level of the serial signal as close to zero as possible There is also the advantage that some of the spare 10 bit codes may be used for other functions for example reset and HSB propagation See Heron Serial Bus section and UDPReset section for more detail on reset and HSB propagation The reset and HSB propagation takes priority over data transfer but the loss of data bandwidth is insignificant and immeasurable Gigabit Serial Cabling The CPCI9 EM2 is supplied with a single 15cm serial cable that has been specially manufactured for HUNT ENGINEERING HUNT ENGINEERING also have 50cm cables made These are suitable for making connections within the same PC Additional cables can be purchased from HUNT ENGINEERING or your local HUNT ENGINEERING supplier These cables are polarised with a blanking plug to prevent incorrect insertion The correct insertion is so that the metal side of the cable connector mates with the metal at the side of the PCB connector 9 HUNT ENGINE
32. nd Heartconf do not support this technique but it will be possible as soon as work on those features is completed 23 HUNT ENGINEERING CPCI9 EM2 USER MANUAL 5 more than two boards in a system booted separately This example is simply an extension of examples 2 or 3 Now the synchronisation built into your application must arrange that the system boots correctly across all of the boards 24 HUNT ENGINEERING 9 2 USER MANUAL Troubleshooting The following sections attempt to cover all likely problems Please check through this section before contacting technical support Hardware If the Hardware has been installed according to the Instructions there is very little that can be wrong Has the DONE LED gone out Are the serial cables connected in the way that the network topology expects Are the board numbers correctly selected on each module carrier Are all board carriers powered up Software As long as the software has been installed using the installation program supplied on the HUNT ENGINEERING CD there should be little problem with the software installation If you have problems then return to one of the example programs supplied with the system 25 HUNT ENGINEERING CPCI9 EM2 USER MANUAL CE Marking HUNT ENGINEERING has performed testing on its products to ensure that it is possible to comply with the European CE marking directives The CPCI9 EM2 cannot be CE marked
33. onB 0 1 And create a connection back from the C6x fifo 0 to the host fifo 0 heart heronB 0 hostB 0 1 create the connections from the DSP modules to each other via the EM2 heart heronB 1 em2B 1 1 heart em2B 1 heronB 1 1 For full details of the syntax refer to the network file description document but notice the correct connection to FIFOO on the first EM2 module and FIFO1 on the second This must reflect where the cable is plugged Notice also that the cable carries data in both directions The system is now ready for use by the application A Virtual FIFO exists in each direction between the two boatds and can be used in the same way that a virtual FIFO connection 1s used between modules on the same boatd For the synchronisation problem there are many solutions all of which need to be made part of your application software One way could be that one end does not start until it receives a particular pattern and that end is booted first Then the other end when booted last sends that pattern to start the system Example3 two or more boards in different host PCs booted separately This example is the same in every respect as example 2 Example4 two or more boards in different host PCs booted as system The hardware supports connecting the reset and HSB across multiple boards Using this technique it is possible to boot and configure a multi board system as if it were one board Currently the Server Loader a
34. that the connections of HEART are pre connected means that there are no arbitration delays It is also not possible that a connection will fail to connect it is already connected before the data is sent The use of FIFOs means that the latency varies depending on how you use them For example if you use a block flag to determine when to write that write may be delayed until there is space If we start with data to be transmitted from the EM2 being available at the HEART system 1 Data that is valid on the ring is clocked into the transmit FIFO on the next 100MHz cycle 13 HUNT ENGINEERING CPCI9 EM2 USER MANUAL 2 Data will flow through the transmit FIFO in 6 cycles of the 100MHz 3 Data is read from the transmit FIFO in bytes converted to 10 bit codes serialised and transmitted from the TX outputs in 12 of the 125MHz clocks 4 At the receiving end the RX inputs are de serialised decoded and written into the receive FIFO in 10 of the 125MHz clocks 5 The data will be available to the HEART system in 13 cycles of the 100MHz 6 The time slots travel around the HEART ring constantly so the longest wait for a slot will be five 100MHz clocks the data will be placed onto the ring in the sixth clock at the latest 7 The data goes out onto the HEART system in the next 100MHz cycle Items 1 2 5 6 and 7 add up to 21 up to 5 of the 100MHz cycles Items 3 and 4 add up to 22 of the 125MHz cycles Therefore t
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