[SI-LIST] Scrambled clock

Could someone please explain that basic concepts involved in scrambled clocks?  
 In an EDN articles the author described this as follow:

"Scrambled clock is a digital signal with transitions at fixed integral points 
in time but with random HIGH or LOW transitions at each point. Think of it as a 
serial data-communications signal with pseudorandom data"

Could any one give a better expalantion?  Does the clock remain periodic?  if 
not how are the lost edges recovered?  perhaps a picture of the clock waveform 
will help.

arageeb



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