Top 100+ Static Timing Analysis Interview Questions And Answers
Question 1. What Is Positive Slack?
Answer :
The distinction among required arrival time and actual arrival time is tremendous, then is referred to as as nice slack. If there may be nice slack, The design is meeting the timing requirements and nonetheless it can be progressed.
Question 2. In Back-stop Design Which Violation Has More Priority? Why?
Answer :
In again-stop layout, Hold violation has extra precedence than Setup Violation. Because preserve violation is related to facts path and now not relies upon on clock. Setup violation can be eliminated by way of slowing down the clock (Increasing term of the clock).
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Question three. What Is Negative Slack?
Answer :
The distinction among required arrival time and actual arrival time is Negative, then it is referred to as as Negative slack. If there may be negative slack, the design isn't always assembly the timing necessities and the paths. That have poor slack called as violating paths. We ought to repair those violations to make the layout assembly timing.
Question four. What Is Slack?
Answer :
The difference among Required Arrival Time and Actual Arrival Time is known as as Slack. The quantity of time via which a violation (Either setup or Hold) is averted is referred to as the slack.
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Question 5. How Can You Avoid Hold Time Violations?
Answer :
By including delays using buffers
By adding lockup-latches
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Question 6. What Is Static Timing Analysis(sta)?
Answer :
Static timing analysis is a way for determining if a circuit meets timing constraints while not having to simulate. So, it validates the design for preferred frequency of operation, without checking the capability of the design.
Question 7. What Is Setup Time?
Answer :
Setup time is the quantity of time before the clock part that the enter sign needs to strong to guarantee it's far well universal on the clock edge.
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Question eight. What Is Hold Time?
Answer :
Hold time is the quantity of time after the clock aspect that the input ought to be strong to guarantee it's far properly everyday at the clock area.
Question nine. What Is Setup And Hold Time Violations?
Answer :
Violating above setup and preserve time requirements is called setup and preserve time violations. If there may be setup and maintain time violations within the design does now not meet the timing necessities and the functionality of the layout is not dependable. STA tests this setup and maintain violations.
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Question 10. How Can You Avoid Setup Time Violations?
Answer :
Play with clock (Useful) skew.
Redesign the flip flops to get lesser setup time
The mixture logic between flip flops need to be optimized to get minimal put off
Tweak release turn-flop to have better slew at the clock pin, this will make launch turn-flop to be speedy there by using helping solving setup violations.
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