TMC-20016: Invalid Reference Pin

Description

This violation occurs if the -clock option for a set_input_delay or set_output_delay constraint matches the clock in the direct fan-in of the reference_pin. Being in the direct fan-in of the reference_pin means that there must be no keepers between the clock and the reference_pin.

Recommendation

Modify the -reference_pin option of the delay assignment to be the direct fan-out of the clock that you specify in the same assignment.

Severity

High

Stage

Finalize

Device Family

  • Intel® Stratix® 10
  • Intel® Agilex™
  • Intel® Cyclone® 10 GX
  • Intel® Arria® 10