set_case_analysis command

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no_mad

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set_case_analysis

Hi all,

My design has inputs from a register. Meaning, these inputs always fix either at 0 or 1. To synthesize this design, can I set these inputs port with “case_analysis” or is it better to set it as false_path??

Please enlighten me..

-no_mad
 

set_case_analysis input

Yes, you can use the command to set these input signals.
 

set_case_analysis is not working

I think it is better not to "set_case_analysis"...

set_case_analysis is mostly used for those control pins like, scan enable...

These controls pin will modify the mode of the chip's operation, suck as clock distribution, like scan mode.

If it is not, do not use set_case_analysis...
then DC may consider the timing check more completely...
 

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    no_mad

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set case_analysis

hi Tony,

So, it is better to use set_false_path unless I want to do a scan chain..
 

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