CDC-50101: Intra-Clock False Path Synchronizer
Description
Violations of this rule identify a synchronizer that was identified from the destination of an intra-clock false path. To preserve the original behaviour of IP, the Intel Quartus Prime software conservatively treats such transfers as asynchronous, despite being between the same clock.
Recommendation
If an intra-clock false path is required and does not need to be followed by a synchronizer, use set_false_path -no_synchronizer to cut the path, instead of set_false_path .
Severity
Low
Tags
| Tag | Description |
|---|---|
| synchronizer | Design rule checks related to synchronizer chains. |
| false-positive-synchronizer | Design rule checks related to automatically-deteected synchronizer chains that may have been over-zealously detected. |
Device Family
- Intel®Cyclone® 10 GX
- Intel®Arria® 10
- Intel®Stratix® 10
- Intel®Agilex™