CDC Verification of Fast-to-Slow Clocks –Structural Checks

CDC checking of any asynchronous clock domain crossing requires that the data path and the control path be identified and that the receive clock domain data flow is controlled by a multiplexer with a select line that is fed by a correctly synchronized control line.

The structural checking approach does not care if the asynchronous transitions are slow to fast clocks or fast-to-slow clocks.  It will ensure that all the transitions are correctly synchronized in terms of having the appropriate synchronizer flops.

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2017-09-12T11:58:27+00:0027th May, 2016|Blog, Thought Leadership|