Earlier this year, designers were telling us that they have a bottleneck in their design flow for CDC analysis. In order to get useful results from a CDC analysis, they need to properly set up clock domains, but it’s hard to figure out what the clock domains should be until they’ve done a CDC analysis.
Well, it turns out that what you need in order to determine clock domains isn’t really a CDC analysis. You need to look at the forest, not the trees. What you need is the big picture of how your clocks interact with one another, not the details of exactly where and what each CDC is.