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AR# 63666

UltraScale DDR4 - tCK SPEC_VIOLATIONs for tCK = 833ps and speed bin = 833 when using Micron Memory Model


Version Found: DDR4 v7.0

Version Resolved: See (Xilinx Answer 69035)

When simulating a MIG UltraScale DDR4 design targeted for tCK=833ps, speed bin=833, and using a Micron memory model, the following error message might be seen:

ERROR:tCK SPEC_VIOLATION spec:TS_938 to TS_938 loaded:TS_833 @3983149.


This violation is seen because of an issue with the Micron memory model using the wrong speed bin parameters.

Please contact Micron for a solution and timeline for when this issue will be fixed.

Revision History:

04/01/2015 - Initial Release

Linked Answer Records

Master Answer Records

Answer Number Answer Title Version Found Version Resolved
69035 UltraScale/UltraScale+ DDR4 - Release Notes and Known Issues N/A N/A
AR# 63666
Date 01/02/2018
Status Active
Type Known Issues
  • Kintex UltraScale
  • Virtex UltraScale
  • Vivado Design Suite - 2015.1
  • MIG UltraScale
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