3.3.2. Register Settings for the TLP Bypass Mode
When TLP Bypass mode is enabled, some error detection is still performed in the Physical and Link Layers inside the Hard IP. Per PCIe specification, the Hard IP must report these errors on the configuration space registers (in the AER Capability Structure). The P-tile IP for PCIe includes two registers called TLPBYPASS_ERR_EN and TLPBYPASS_ERR_STATUS to report errors detected while in TLP Bypass mode.
TLPBYPASS_ERR_EN and TLPBYPASS_ERR_STATUS are part of the configuration and status register.