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what's the real difference between these three command?

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bendrift

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rtl compiler impact of set_case_analysis

set_false_path
set_case_analysis
set_disable_timing
what 's the real difference between these three command?
would anyone give some example for them?
thank u :)
 

set_case_analysis set_false_path

You can have a look at the following docs which are about prime time and design compiler.
There are some examples for the set_case_analysis command and explain the difference between the set_false_path and set_disable_timing.
 

set_disable_timing -through

set_false_path : Telling tool to ignore the path
set_case_analysis : Telling tool to assume "constant" value on port/pin
set_disable_timing : Telling tool to disable the timing arc .
 
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    ivlsi

    ivlsi

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set_case_analysis example

i think:
set_false_path caculate the timing arc,but set the these in timing exceptions.
set_case_analysis and set_disable_timing didn't caculate the timing arc.
is it right?
 

set_disable_timing

set_false_path : deal with a path that cant transform a signal.
set_case_ana : deal with when 1 are critical path when 0 are dont care path
set_disable : deal with you dont want timing engine to calculate the path.
 

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