Follow Our FB Page << >> for Daily Laughter. We Post Funny, Viral, Comedy Videos, Memes, Vines...

Why do we use a Clock tree?

Answers were Sorted based on User's Feedback

Why do we use a Clock tree?..

Answer / sharekhan

Clock tree is usd for equal distribution of clock in a VLSI
circuitry.In this technique the VLSI blocks are at equal
distance from the central clock.This technique is ues to
eliminate skew problem.

Arrangemnet is in the form of alphabhet "H" with VLSI
blocks are arranged at the end of the alphabhet H and clock
circuitry aplied at the centre of the "H".THus each block
is at equal distance from the clock circuitry.

Is This Answer Correct ?    18 Yes 0 No

Why do we use a Clock tree?..

Answer / arghya sasmal

During CTS our goal is to
1) minimize the clock skew
2)minimize the clock tree power dissipation
In CTS buffers and inverters are placed in clock net to minimize the skew.

Clock nets are optimized and their driving cells are supposed to match RC values and impedance ...and minimize the clock tree power dissipation

Is This Answer Correct ?    4 Yes 0 No

Why do we use a Clock tree?..

Answer / purna

The main goals of CTS are
1. Clock signal is propagate to all flops in same time.
2. Low global and local skew.
3. Less insertion delay.
4. For low power designs Clock gating cells are added based
on the designer requirement.
5.Selecting a tree structure from (H,Y,binary and fish bone
6. less number of buffer and inverters in the clock path.
7. Clock pin has high fanout to balance skew, we need to
synthesis the clock path separately.

Is This Answer Correct ?    3 Yes 0 No

Post New Answer

More VLSI Interview Questions

Insights of a 4bit adder/Sub Circuit?

0 Answers   Intel,

What was your role in the silicon evaluation or product ramp? What tools did you use?

0 Answers   Intel,

Define threshold voltage?

32 Answers   College School Exams Tests, Intel, JHG, Wipro,

Explain Basic Stuff related to Perl?

0 Answers   Intel,

Explain Custom Design Flow?

2 Answers   Intel,

What is hot electron effect?

3 Answers   Intel,

Tell me the parameters as many as possible you know that used to character an amplifier?

1 Answers  

what is the use of defpararm?

0 Answers  

Write a program to explain the comparator?

0 Answers  

what is charge sharing?

0 Answers   Intel,

What is polymorphism? (C++)

2 Answers   Intel,

What is charge sharing?

2 Answers   Cypress Semiconductor, Intel,