Intel® Quartus® Prime Software
Intel® Quartus® Prime Design Software, Design Entry, Synthesis, Simulation, Verification, Timing Analysis, System Design (Platform Designer, formerly Qsys)
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polarity of uTsu in Timing analyzer

RLee42
Novice
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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?

 

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KhaiChein_Y_Intel
504 Views

Hi,

 

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

 

Thanks.

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KhaiChein_Y_Intel
504 Views

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.

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KhaiChein_Y_Intel
504 Views

Hi,

 

May I know if you have any questions?

 

Thanks.

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RLee42
Novice
504 Views

No further questions, thank you.

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