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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 ...
Altera_Forum's avatar
Altera_Forum
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15 years ago

mbsharan, unfortunately there is no solution since its either a restriction imposed by processor chipset or by bios. I have contacted Dell technical support regaridng this matter, but have not received any encouraging response. Only positive news I can offer is that so far I have found it to work on Optiplex 760 (i.e. all 8 lanes working in x16 slot). I would also like to point out that the performance was sub-linear, but I suspect that is due to OS (I am using Windows XP) and system memory issues.

Good luck!

Piyush