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Altera_Forum
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17 years ago

PCI Express:Max_payload_size and lane width

i have design a X4 pcie endpoint device based on Quartus pci express ip V7.2. when i plug the device to the x16 pice slot of my dell optiplex 620 host, the device can only be recognized as an ...
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Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Piyush,

Thanks for the information. It was Dell motherboard(360) chipset issue which supports x1 lane only on x16 connector. We also tested the same board on HP machine and all x8 lanes are detected. Throughput was around 8Gbps with payload size of 128Bytes. Not sure how to change payload size to 256Bytes.

Thanks.