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Altera_Forum
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14 years ago

PCIe Memory Write Transaction

Hi, I am facing an issue while performing memory write transaction with payload more than 128Bytes from root to endpoint. Write transaction with less than 128Bytes are completed easily. I have ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Finally i picked out what was wrong.....

I haven't programmed the device control register. There is a field that indicates the maximum payload transfer in a single TLP and the default value was 3'b000 (i.e. 128Bytes) changing it to 2KB(3'b100) solved my problem.

Thanks to all of you