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dmakow
Visitor
Visitor
2,431 Views
Registered: ‎05-18-2011

QDRII+ and Xilinx Virtex 5

Hello,

I would like to connect QDRII+ Cypress memory (cy7c1545kv18, 200 MHz) to Xilinx Virtex 5 XC5VSX95T FPGA. The MIG for Virtex 5  supports only QDRII memories.

Where can I found some information concerning QDRII+ memories and Virtex 5? I know that MIC for Virtex 6 supports QDRII+ memories. Is it possible to use somehow the code from MIC of Virtex 6 for Virtex 5 FPGA ?

 

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jschmitz
Xilinx Employee
Xilinx Employee
2,424 Views
Registered: ‎10-23-2007

I recommend you modify the Virtex-5 code to accommodate the QDR II+ changes rather than try to back port the Virtex-6 design to Virtex-5.  As I recall (could be wrong), the most significant change is the latency which goes to 2.5 cycles in QDR II+.  Check the datasheets carefully to see the differences.  I suspect this will be the easiest route.

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