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  1. #1
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    DFT Visualizer Data View

    Hi I am trying to debug a simulation mismatch. I am viewing the design through DFT Visualizer. I gave the pattern index of the simulated pattern. The visualizer shows 9 bits of data for each pin in the instance. It is something like this.

    Code:
    D 000-000-000 Q 000-100-000-[0]

    What does it mean?

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  2. #2
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    Re: DFT Visualizer Data View

    Quote Originally Posted by Vignesh_J View Post
    Hi I am trying to debug a simulation mismatch. I am viewing the design through DFT Visualizer. I gave the pattern index of the simulated pattern. The visualizer shows 9 bits of data for each pin in the instance. It is something like this.

    Code:
    D 000-000-000 Q 000-100-000-[0]

    What does it mean?
    It means your FF.Q expected value 0 after unload (shift out the data to the scan chain) .
    I can explain more about it :
    Q 000 - 100 - 000
    [shift in ] - [capture ] - [shift out]

    Tiep Ngo



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  3. #3
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    Re: DFT Visualizer Data View

    It means your FF.Q expected value 0 after unload (shift out the data to the scan chain) .
    I can explain more about it :
    Q 000 - 100 - 000
    [shift in ] - [capture ] - [shift out]
    I see three shift pulse when SE in enabled. So Shift in data of Q 000 means that three 1'b0 are shifted in the scan chain at shift clk right?
    Correct me if I am wrong.



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