design advice on connecting FPGAs together
- Status: Closed
- Præmier: £190
- Modtagne indlæg: 3
- Vinder: beandigital
Hi I am looking for help fleshing out an idea I have for a xilinx FPGA system. Unfortunately I don’t have the time to research this information myself.
I need advice on how to connect FPGAs together, The FPGAS are going to be on daughter cards. I need to connect them together with a bidirectional 100 MB/S link.
Consider 2 FPGAs, One is a Virtex vc5vfx30t The other is a vc5vlx50t . I believe I need to use the Rocket IO. The vc5vfx30t has GTX’s but the vc5vlx50t only has GTP’s
1) Can I join GTX’s to GTP’s? How?
2) Can I join the two FPGAs together via a backplane?
3) What sort of connectors can I use on the backplane (the data signal will need to go through two sets of connector) I prefer a plug and socket, Could you please specify part numbers (in stock at either Farnel of Digikey). FYI I will need other signals and power on the connector as well.
4) Can I connect the FPGAs directly or do I need some voltage translation (how)
5) What about clocking
Are there any special considerations for designing the PCBs (backplane & daughter cards)
Can I use coax cable , if so , what circuitry do I need. Is this preferable?
Part 2, In the general, Can you defined an interface that would work between any Xilinx FPGA (that has Rocket IO)
I might replace one FPGA with a Kintex or Virtex 6/7
Part 3 Same basic question but I only need a bidirectional 10 KB/S connection. And might not have any spare RocketIOs.
Many thanks for considering my project