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what does hookup polarity mean

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anssprasad

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Hi

When defining DFT signals in Scan insertion using RC we use an option called hook up polarity. what does that mean. I am not clear from the explanation given in the Cadence manual.
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Prasad
 

Not 100% sure, but perhaps its whether the test/scan signal is active high or active low.
 

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    anssprasad

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-active is used to define the polarity of the PI signal
-hookup -is used to define the polarity of the signal at the core level connected to the PI.

I think this will clear your doubt
 

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    anssprasad

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