Resolution - Resolution - 2025.2 English - UG906

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

Document_ID
UG906
Release_Date
2025-12-10
Version
2025.2 English
  1. If the user-defined generated clock is not necessary, remove the constraint and use the auto-derived clock instead.
  2. If the constraint is necessary, verify that the generated clock constraint matches the auto-derived clock waveform or modify the CMB properties to match the expected waveform.
  3. If you only want to rename the auto-derived clock, use the create_generated_clock constraint with only the -name option defined, along with the name of the object where the clock is defined (typically the output pin of the CMB).

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.