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Altera_Forum's avatar
Altera_Forum
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10 years ago

Latching asynchronous signal

Hi, I need to design a circuit for latching an asynchronous signal and later I need to do some processing on this signal. I am planning to use double registering of the signal before its used...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

My guess is that the tool would not like io register as it wants the two flips to be as close as possible to reduce MTBF. So I assume a pair of fabric registers would be chosen. io registers are not in pairs and the external delay of async input is irrelevant.