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  1. #1
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    ATPG constraints and cell constraints

    can anyone help me understand the difference between atpg constraints, cell constraints and pin constraints in ATPG?
    Im using mentor fastscan.


    Thanks,
    Kiran

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  2. #2
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    Re: ATPG constraints and cell constraints

    Below is difference between all 3 constraitns :

    ATPG constraints : applied for shift and capture both
    Cell constraints : applied to scan cell only.
    PI constraints : apply to Top level Input only and effect during capture only.

    Hope you understand.

    Regards,
    Maulin Sheth


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