TMC-20016: Invalid Reference Pin


Violations of this rule identify reference pins specified for I/O delay constraints that are not in the direct fan-out of the -clock specified in the same assignment. Being in the direct fan-out means that there must be no keepers between the clock and the reference_pin .


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.



Device Family

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