Sunday, 29 November 2015

CLOCK SKEW?

SKEW:

  • Not all the clock arrives at same time.
  • There is an RC-Delay associated with clock wire.


COUSES OF PROBLEM:

  • The clock time gets longer.
  • The port can get the wrong answer


                   T(skew) >T(clock -q) -T(hold)
                    T(cycle) =T(d) +T(setup)+T(clock -q)+T(skew)


CLOCK SKEW:
                             In a synchronous circuit clock skew ( ) is the difference in the arrival time between two sequentially-adjacent registers. Given two sequentially-adjacent registers and with clock arrival times at registerclock pins as and respectively,



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