With embedded DesignTime in DC, why still Primetime ?

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joe2moon

Joined: 19 Apr 2002
Posts: 389
Helped: 12
Location: MOON

20 Sep 2002 4:28 With embedded DesignTime in DC, why still Primetime ?

I know Pr!metime can check more timing/path/case than Des!gn Compiler, and the precision is more accurate.

But ....
If I have well constrainted my design before doing the synthesis, then do I still need to run Pr!metime to check my timing ? Surprised

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czhomo

Joined: 20 Jun 2001
Posts: 13

20 Sep 2002 11:55

Yes, you are right, the main features are the same as in DC-Time engine. PT is more accurate and has some additional features which enables you to easy your design timing check (eg. to show violated paths graphically) and is much faster then DC-Time engine. I am using PT in most cases for post layout timing checks (with backannotated SDF files, which includes real cell and net arc delays). If I have possibility to chose PT or DC for timing checks, I will always use PT. But for smaller designs maybe you can also use DC for your timing checks....