In what cases do you need to double clock a signal before presenting it to a s

In what cases do you need to double clock a signal before
presenting it to a synchronous state machine?

Question Posted / alok hisaria

1 Answers
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Intel, I also Faced
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In what cases do you need to double clock a signal before presenting it to a synchronous state mac..

Answer / sudeep

when ur transfering a data b/w two different clock domains,
ex:- The Fsm and ur outside design is working at different
frequencies, to synchronise these signals u do double
clocking to avoid metastability before transferring it into
the FSM.

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