AR# 63402

JESD204 v6.0 - Rx Link Error Status auto-clear issue


The JESD204 Link Error Status (Lanes 0 to 7) register should clear all status bits automatically upon reading the register.

For JESD204 v5.2 and v6.0, register behavior is not as expected.

A read cannot clear the register when multiple lanes are implemented.


This has been resolved in JESD204 v6.1, as outlined in (Xilinx Answer 64619) - 2015.1 Vivado IP Release Notes - All IP Change Log Information:

"Fixed issue with Rx Link Error Status Registers (0x01C and 0x03C) not auto clearing after a read for multi-lane designs"

Customers are asked to migrate to Vivado 2015.1 with JESD204 v6.1 if they experience this issue.

If migration to Vivado 2015.1 is not an option, a patch is available for Vivado 2014.4 upon application to Xilinx Technical Support.

To apply, create a Service Request referencing this Answer Record number.

The preferred resolution is to migrate to Vivado 2015.1.

Linked Answer Records

Associated Answer Records

Answer Number Answer Title Version Found Version Resolved
64619 2015.1 Vivado IP Release Notes - All IP Change Log Information N/A N/A
AR# 63402
Date 06/26/2015
Status Active
Type General Article