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  1. #1
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    need help on some DFT problem

    In one design, there are both posedge and negedge FFs. for the dft design, if i want to put all the negedge FFs at the begining of the scan chain, how can i make the constrain in the script?

    •   Alt4th December 2007, 04:24

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  2. #2
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    need help on some DFT problem

    What is the tool u are using? Well u can can define scan chain order. That is possible with every tool



    •   Alt4th December 2007, 05:28

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  3. #3
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    need help on some DFT problem

    i use synopsys's DFT compiler



    •   Alt4th December 2007, 05:42

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  4. #4
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    Re: need help on some DFT problem

    All tools will put the negedge flops in front of the posedge flops. Synopsys included.

    John

    for DFT talk/info go to:
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