Malformed TLP - 2.9 English

AXI Memory Mapped to PCI Express (PCIe) Gen2 v2.9 LogiCORE IP Product Guide (PG055)

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2.9 English

The integrated block for PCI Express detects a malformed TLP. For the IP configured as an Endpoint core, a malformed TLP results in a fatal error message being sent upstream if error reporting is enabled in the Device Control Register.

For the IP configured as a Root Port, when a malformed TLP is received from the Endpoint, this can fall under one of several types of violations as per the PCIe specification. For example, if a Received TLP has the Error Poison bit set, this is discarded by the MM/S master bridge, and the MEP (Master Error Poison) bit is set in the Interrupt Decode register.