TMC-20016: Invalid Reference Pin

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