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Hello All,
I have read that, reference clock in Clock Data Recovery
Unit used in SONET systems
needs to have a tolerance of + or - 20 ppm to meet SONET
output frequency specifications.
Can any one of you please explain how this figure is
attained.
thanks in advance,
cheers,
krishna
~~~~~~~
Krishna Sankar M Engineer-VLSI/System Design Tel : +91-80-8520408 / 8520416 Ext. 4320 Fax : +91-80-8520478 email : krishna.sankar@wipro.com |