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RLee42's avatar
RLee42
Icon for Occasional Contributor rankOccasional Contributor
6 years ago

polarity of uTsu in Timing analyzer

I've a bit confused about the polarity of uTsu in Timing analyzer. As indicated in the table the uTsu is positive while in the timing diagram it is negetive. Which polarity of uTsu is correct and why they are different?

4 Replies

  • KhaiChein_Y_Intel's avatar
    KhaiChein_Y_Intel
    Icon for Regular Contributor rankRegular Contributor
    6 years ago

    Hi,

    You may refer to the value in the Data Required Path. I have filed a case to engineering team regarding this.

    Thanks.

  • KhaiChein_Y_Intel's avatar
    KhaiChein_Y_Intel
    Icon for Regular Contributor rankRegular Contributor
    6 years ago

    Hi,

    I received the feedback. This is not a bug.

    POSITIVE uTsu:

    -------------------------

    - *Positive* number on waveform display

    - Signal must arrive *earlier*. Therefore, the arrow will go *left* on waveform display, and you will see a *negative* entry in the required time calculation section of the timing report

    NEGATIVE uTsu:

    -------------------------------------------------------

    - *Negative* number on waveform display

    - Signal can arrive *later*. Therefore, the arrow will go *right* on waveform display, and you will see a *positive* entry in the required time calculation section of the timing report

    Thanks.