Visible to Intel only — GUID: msg1698164147493
Ixiasoft
Visible to Intel only — GUID: msg1698164147493
Ixiasoft
3.11.1. Debugging Link Training Issues
The Physical Layer automatically performs link training and initialization without software intervention. This is a well-defined process to configure and initialize the device's physical layer and link so that PCIe packets can be transmitted. Some examples of link training issues include:
- Link fails to negotiate to expected link speed
- Link fails to negotiate to the expected link width
- LTSSM fails to reach/stay stable at L0
The following flow chart identifies the potential cause of the issue seen during link training when using the AXI Streaming Intel® FPGA IP for PCI Express* .
You may use the following debug tools for debugging link training issues observed on the PCI Express link when using the AXI Streaming Intel® FPGA IP for PCI Express* .