Agilex™ 5 ES Device Errata and User Guidelines

ID 825514
Date 8/11/2025
Public
Document Table of Contents

2.4.16. Occasional equalization timeout or PCIe link training failure to achieve expected link speed during speed change, hot reset, and link disable

Description

In the GTS AXI Streaming IP for PCIe* , when you perform a speed change (at PCIe* 4.0 and PCIe* 3.0), hot reset, or link disable, in the worst case scenario, an equalization timeout or PCIe* link training failure could occur, preventing the link from achieving the expected speed.

Workaround

We recommend verifying the PCIe* link speed after a speed change, hot reset, or link disable procedure. If the PCIe* link speed does not meet expectations, repeat the speed change, hot reset, or link disable procedure to allow the link to recover at the desired speed.