[SI-LIST] Question on DDR3 specs

  • From: "Moreira, Jose" <jose.moreira@xxxxxxxxxx>
  • To: <si-list@xxxxxxxxxxxxx>
  • Date: Wed, 14 Nov 2007 07:32:23 -0600

Hi,

As anyone looked on the JEDEC DDR3 jitter specs?

I'm a bit confused with the fact that they define all jitter components =
that the clock input must tolerate has Gaussian (period jitter, cycle to =
cycle jitter ,etc...) but they specify the values has being measured on =
200 consecutive cycles and not has Gaussian standard deviations values.

Does anyone have an insight on why the jitter tolerance specs on the =
clock are defined this way?

Thanks in advance
Jose


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