Chip Delay and Power Optimization
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Questions and Answers

How is slack calculated in timing analysis?

By subtracting the arrival time from the required time.

What is slack in the context of timing analysis?

The difference between the required and arrival times.

What does positive slack indicate in timing analysis?

The circuit meets timing requirements.

What does negative slack indicate in timing analysis?

<p>The circuit is not fast enough.</p> Signup and view all the answers

How does a timing analyzer account for different gate delays?

<p>By defining delays separately for rising and falling transitions.</p> Signup and view all the answers

Define propagation delay time.

<p>Maximum time from the input crossing 50% to the output crossing 50%.</p> Signup and view all the answers

What is contamination delay time?

<p>Minimum time from the input crossing 50% to the output crossing 50%.</p> Signup and view all the answers

Explain the rise time.

<p>Time for a waveform to rise from 20% to 80% of its steady-state value.</p> Signup and view all the answers

What does the term 'Edge rate' represent?

<p>(tr + tf)/2, the average of rise time and fall time.</p> Signup and view all the answers

Why is propagation delay often referred to as simply 'delay'?

<p>Propagation delay is usually the most relevant value of interest in chip design.</p> Signup and view all the answers

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