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Altera_Forum
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15 years ago

PCIe freezing

Hi, I have strange problem with PCIe IP. I have a custom board with ArriaGX and PCIe instantiated using MegaCore flow with AvalonST interface. The PCIe works (there are some DMAs running, targe...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Hi Matthias,

currently I have disabled lot of my application functionality for debugging of this problem, so I do not handle read requests anyhow - now they are just getting timeouted. As a part of debugging I disconnected the whole AST transmitter side from my application (I tied it to ground) to be sure, that some invalid packet from my application is not a cause of this problem. When I issue a read on the PC side, I receive all FFs. When I track changes in credits with the Signal Tap, the NPH stays the same, they are just decremented by one and then incremented back again. I possibly can send CA - I'll only have to find out how to do it as I did not implemented it before, I handled all request from the PCIe.