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AR# 57473

LogiCORE IP XAUI, Virtex-6 GT Transceivers - The core fails to achieve alignment after link partner is reset or a cable re-plug - toggling on mgt_rxchanisaligned_r

Description

When targeting Virtex-6 GTX or GTH 7 series Transceivers, A case has been seen where the XAUI Core sometimes fails to link up after the link partner is reset or there is a cable re-plug. 

In this case, synchronization is achieved on all four lanes, but align_status remains low.  

The GT output mgt_rxchanisaligned_r is seen toggling.  

An update is needed to the channel bond monitor block inputs to ensure that a reset is issued if channel bonding is not successful.

Solution

 

Verilog

Change from:
.CHANBOND_DONE (chanbond_done),

Change to:
.CHANBOND_DONE (align_status_i),

VHDL

Change from:
CHANBOND_DONE => chanbond_done,

Change to:
CHANBOND_DONE => align_status_i,

Linked Answer Records

Master Answer Records

Answer Number Answer Title Version Found Version Resolved
47684 LogiCORE IP XAUI - Release Notes and Known Issues for v10.x N/A N/A
AR# 57473
Date Created 09/16/2013
Last Updated 09/23/2014
Status Active
Type General Article
IP
  • XAUI