In the context of "multi-cycle paths" in static timing analysis, what does it mean for a path to be specified as multi-cycle, and why might a designer do this?
Correct! Well done.
Incorrect.
The correct answer is A) A multi-cycle path is one where data is allowed multiple clock cycles to propagate and be captured, rather than just one, specified because the design guarantees the receiving register doesn't sample every cycle, relaxing timing for that path
Correct Answer
A multi-cycle path is one where data is allowed multiple clock cycles to propagate and be captured, rather than just one, specified because the design guarantees the receiving register doesn't sample every cycle, relaxing timing for that path
By default, STA assumes data must propagate and be captured within a single clock cycle; if the design logic ensures a path's result is only used/sampled every N cycles (e.g., due to an enable signal), specifying it as an N-cycle multi-cycle path relaxes the timing requirement, which can help close timing on otherwise-critical paths without functional impact.