Resolution - 2023.1 English - UG906

Vivado Design Suite User Guide: Design Analysis and Closure Techniques (UG906)

Document ID
UG906
Release Date
2023-05-16
Version
2023.1 English

If the user-defined generated clock is unnecessary, remove the constraint and use the auto-derived clock instead. If constraint is necessary, verify that the generated clock constraint matches the auto-derived clock waveform or modify the GT properties to match the expected clock waveform. If the intention is to force the name of the auto-derived clock, the recommendation is to use the create_generated_clock constraint with only the -name option defined and the name of the object where the clock is defined (typically output pin of GT). See the Vivado Design Suite User Guide: Using Constraints (UG903) for additional information about creating generated clocks and restrictions of the auto-derived clocks renaming constraint.