Resolution - Resolution - 2026.1 English - UG906

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

Document ID
UG906
Release Date
2026-06-23
Version
2026.1 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).

Refer to 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.