Stratix V Avalon-ST Interface for PCIe Solutions: User Guide

ID 683093
Date 5/03/2019
Public
Document Table of Contents

10.1.3. Error Signaling Messages

Table 70.  Error Signaling Messages

Message

Root Port

Endpoint

Generated by

Comments

App Layer

Core

Core (with App Layer input)

ERR_COR

RX

TX

No

Yes

No

In addition to detecting errors, a Root Port also gathers and manages errors sent by downstream components through the ERR_COR, ERR_NONFATAL, AND ERR_FATAL Error Messages. In Root Port mode, there are two mechanisms to report an error event to the Application Layer:

  • serr_out output signal. When set, indicates to the Application Layer that an error has been logged in the AER capability structure
  • aer_msi_num input signal. When the Implement advanced error reporting option is turned on, you can set aer_msi_num to indicate which MSI is being sent to the root complex when an error is logged in the AER Capability structure.

ERR_NONFATAL

RX

TX

No

Yes

No

ERR_FATAL

RX

TX

No

Yes

No