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SKuma36
Icon for Occasional Contributor rankOccasional Contributor
7 years ago

Arria10 PCIe Hard IP link bring up issue

Hi, We are trying to bring-up PCIe (Gen1 x1) interface using Arria 10 PCIe Hard IP on Intel's Arria10 Signal Integrity development board. The design is found to be working in simulation, but on the...
SKuma36's avatar
SKuma36
Icon for Occasional Contributor rankOccasional Contributor
7 years ago
Hi SK, I tried capturing the PCIe LTSSM state with SignalTap (snapshot attached). The state machine transitions between Detect_quiet (00) and Detect_Active (01) states, doesn’t goes to Polling state. Looks like receiver detection has failed. I tried looping back TX & RX lines, still see the same issue. Also tried probing the internal PIPE signals, but no activity is seen. Pl. suggest if I need to probe any other signals. Rgds, sunil