Teledyne LeCroy Summit T3-8 PCIe Multi-lane Protocol Analyzer User Manual - Manual (Page 138)

Teledyne LeCroy Decoding Traffic
126 Summit T3‐8 PCI Express Multi‐Lane Protocol Analyzer User Manual
In fact, there are PCI‐E 3.0 compliant devices that have AER_CAP_VER=1.
Example H/W:
A PCI‐E 3.0 device that supports Multiple Header Recording, but does NOT support TLP
Prefixes. This device is allowed to have AER_CAP_VER=1, and
Multiple_Header_Recording_Capable=1
Therefore, the Teledyne Lecroy software decodes the
Multiple_Header_Recording_Capable field regardless of the value of AER_CAP_VER.
6.13.2 Link
Link level decode is composed of TLP packets matched with a corresponding ACK or
NAK coming from the opposite direction.
6.13.3 Split
Split level decode is composed of two Link transactions, the Request TLP and the
Completion TLP from the other direction.