Agilex™ 7 F-Series and I-Series Known Issue List

ID 683584
Date 9/29/2025
Public
Document Table of Contents

2.1.2.13. R-Tile PCIe* - Intermittent PCIe* Gen4 EQ time out

Description

Intermittent Recovery Equalization timeout might occur under the following conditions when R-Tile is configured as Gen5:

  • Links up with a Gen4 link partner or
  • Links up with a Gen5 link partner with Equalization bypass to highest rate supported bit not set in the 32.0 GT/s Capabilities Register of the Physical Layer 32.0 GT/s Extended Capability (link training goes through Gen3 EQ Gen4 EQ Gen5 EQ)

The root cause is the non-optimal PHY recipe setting of save & restore. The issue is not present when R-Tile is configured as native Gen4 IP.

Impacted modes

  • All PCIe* modes
  • PIPE-Direct mode

Workaround

None.

Status

Table 39.  Device Status Table
Devices Affected Planned Fix
  • AGIx019R18Axxxxxx
  • AGIx023R18Axxxxxx
  • AGIx022R29Axxxxxx
  • AGIx027R29Axxxxxx
  • AGIx022R31Axxxxxx
  • AGIx027R31Axxxxxx
  • AGIx041R29xxxxxx
  • AGIx041R31Exxxxx

Quartus® Prime Pro Edition software version 23.4 Patch 0.07 firmware, Quartus® Prime Pro Edition software version 24.1