SEU Mitigation User Guide: Agilex™ 5 FPGAs and SoCs

ID 813649
Date 9/20/2024
Public

A newer version of this document is available. Customers should click here to go to the newest version.

Document Table of Contents

2.3.1. Internal Scrubbing

The internal scrubbing feature automatically corrects single-bit errors and double adjacent errors. Turn on internal scrubbing to perform the SEU detection.

If you disable the internal scrubbing feature, the device turns off the SEU mitigation feature for a sector after an error occurs in the sector. Subsequently, the device stops detection of correctable or uncorrectable SEU occurrence in the affected sector.

If you enable the internal scrubbing feature, you must still plan your recovery sequence. Although the scrubbing feature can restore the CRAM array to the intended configuration, a latency period exists between detection and correction of the soft error. During this latency period, the Agilex™ 5 device may be operating with errors.

For uncorrectable errors, the SDM periodically inserts an error message to the error message queue. The insertion reasserts the SEU_ERROR pin to alert you about the error.