Arria V Avalon-ST Interface for PCIe Solutions User Guide

ID 683733
Date 6/03/2020
Public

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9.1.3. Error Signaling Messages

Table 71.  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