AR# 64427


UltraScale/UltraScale+ QDRII+ IP - Calibration and intermittent data errors due to improper calibration results


Version Found: v6.1
Version Resolved: See (Xilinx Answer 69038)

Due to improper write calibration and read valid calibration results, MIG UltraScale QDRII+ designs can see calibration failures or intermittent data errors in hardware.

This issue only affects QDRII+ memory interfaces and failures are most commonly seen at cold temperatures and in the 500-550MHz range, but can occur across all temperature and frequency ranges. 


To resolve the issue please upgrade to Vivado 2015.1 and MIG v7.0 as improvements have been made to the MIG UltraScale QDRII+ calibration algorithm that address this issue.

Revision History:

05/01/2015 - Initial Release

Linked Answer Records

Master Answer Records

Answer Number Answer Title Version Found Version Resolved
69038 UltraScale/UltraScale+ QDRII+ - Release Notes and Known Issues N/A N/A
AR# 64427
Date 12/15/2017
Status Active
Type Known Issues
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