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Altera_Forum's avatar
Altera_Forum
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17 years ago

Internal generated clock muxing

Hi all, since I used quartus I still have the same problem in all kind of design. The problem is the following: When I syntethize an internal clock from another one all time I've been reporte...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

Even though a logic-driven clock might be necessary for your application, you still need to be aware of the things discussed at http://www.alteraforum.com/forum/showthread.php?t=2388.

If you are using the Classic Timing Analyzer, then I strongly urge you to change to TimeQuest. TimeQuest has much better support for clock muxes and other clock structures that are difficult or impossible to constrain and analyze as you'd want with the Classic Timing Analyzer.