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Altera_Forum's avatar
Altera_Forum
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15 years ago

Combinational loop

When I start up Timing Analyzer GUI (quartus_staw) and read my sdc file I then try one of the reports (report clocks). I get a message saying "Critical Warning: Design contains combinational loop of...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Some combinational loops in a design are quite normal, e.g. if you need asynchronous latches in a place. They regularly don't cause problem except a warning. There must be something special with your desígn to make the timing analysis fail.