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how to set some DFF not scan replaced?

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feel_on_on

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how to set some DFF not scan replaced?
 

wy21century

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it depends on which tool you are using

in Magma, you can do 'force keep'
 

avimit

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Agreed with wy21century. Synopsys Design Compiler would have the command set_dont_touch.
you have to 'set_dont_touch' on the flops you do not want to put in scan chain.
Hope it helps
Kr,
Avi
[/url]http://www.vlsiip.com
 

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