Common Interview Questions

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aditya1579

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One of the common interview questions I face is :

While building a clock tree, what are some of the factors one should take care of ? Skew is one of the points which comes to my mind. What are the others ?

Maybe things like - which buffers to use to get minimum delay, which layers to route the clock wires on etc. ??

Aditya
 

while building a clock tree

There are three important parameters for such nets:

***Transition time:- This is the time it takes to change the logic level of a node (e.g. 0 ! 1).

***Insertion delay:- The time required for the signal to travel from the driver to the end-points.

***Skew :- Difference in clock arrival time at two spatially distinct points
 

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