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Altera_Forum
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13 years ago

State A => State B multicycle path?

Is there a way to tell TimeQuest that all signals launched by State A and captured by State B are part of a multi-cycle path? My combinational path delay is too large so i'm adding a timer to delay m...
Altera_Forum's avatar
Altera_Forum
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13 years ago

rbugalho is correct about worrying about the metastability. You do not want this flop to go metastable.

To ensure this, since you don't have an enable on the Latch_FF, you need to make sure that your Hold multicycle is the more stringent 0 (which is the default), not 1.

set_mjulticycle_path -hold -end -from {Launch_FF} -to {Latch_FF} 0 # Default

Basically, your min time from Launch_FF must be at least one full clock cycle to make this hold time. This may be difficult to achieve.