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AR# 67336

UltraScale QDRII+ IP - *_ooc.xdc constraints file does not get generated in Out-Of-Context (OOC) mode


Version Found: v2.0 (Rev. 1)

Version Resolved: See (Xilinx Answer 58435)

When generating the UltraScale QDRII+ IP output products in Out-Of-Context (OOC) mode, the IP should generate a *_ooc.xdc constraints file.

The create_clock constraint for the IP is included in this file. If the *_ooc.xdc constraints file is missing, then the create_clock for the IP does not get included during synthesis and an accurate timing estimate will not be provided.


The solution is to manually add a create_clock constraint for the input reference clock to the QDRII+ IP into the top-level XDC constraints file.

This issue will be fixed in a future IP release.

Revision History:

06/06/2016 - Initial Release

AR# 67336
Date Created 06/06/2016
Last Updated 06/08/2016
Status Active
Type Known Issues
  • Kintex UltraScale
  • Virtex UltraScale
  • MIG UltraScale