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Altera_Forum
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13 years ago

What is mean of "asynchronously" in "set_clock_groups"?

In STA, there is a command "set_clock_groups" can put the clocks in different groups, and the option can be "asynchronously" or "exclusive". "exclusive" is easy to understand which means the two cloc...
Altera_Forum's avatar
Altera_Forum
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13 years ago

TimeQuest evaluates them the same way. The difference is in other tools(ASIC) where -asynchronous means they might have some interference with each other, such as cross-talk, where -exclusive clocks won't. But in TimeQuest you'll get the same analysis either way.

If going to Hardcopy(where ASIC analysis tools are used on the back end), you should use the right one. -asynchronous will give the more restrictive analysis though, so you can just default to that.