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set_disable_timing constraint using wildcards not working

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TonyLS

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Hi all,

I'm trying to use wildcards to disable timing arcs between the functional address pins, ADDR*, of a memory and the test clock of the memory, TCLK.

Multiple address pins using a wildcard does not work: set_disable_timing memory_instance -from TCLK -to ADR*

Single address pin does work: set_disable_timing memory_instance -from TCLK -to ADR1

Any ideas on how I can constrain all ADR pins without writing a constraint for each bit?

Thanks for your help.
 

This is likely a tool restriction, not an SDC feature/lack of feature. Which tool are you using?
 

I'm using dc_compiler. I'm sure there is a way in TCL to obtain a list of pins of the memory cell, filter the applicable ones and apply them to the set_disable_timing command. I'm not that proficient in TCL programming, but have been researching. Was hoping someone has already tackled this problem.
 


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