You have a critical path that includes a multiplier C=A*B, where A and B can be any number. It’s the critical path, the longest path in the design by at least a factor of 2 (measured post-compile). Which is the best strategy to deal with it?

Question

You have a critical path that includes a multiplier C=A*B, where A and B can be any number.  It’s the critical path, the longest path in the design by at least a factor of 2 (measured post-compile).  Which is the best strategy to deal with it?

Accepted Answer

Add a register to C and use retiming.

Answer

Do nothing.  DC will squeeze the path down.

Answer

Apply the strategy used in HW 3.

Answer

Use multicycle path on the path that includes the multiplier.

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You have a critical path that includes a multiplier C=A*B, where A and B can be ...

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