HIGH RESOLUTION SAMPLE CLOCK GENERATOR WITH DEGLITCHER

摘要

A digital controlled clock provides ultra fine resolution for a sampling clock signal for recovering data from a received signal, the phase jump of the sampling clock signal being determined the number of stages in a multiphase clock generator that generates a number of equally-spaced phase clock outputs based on a reference clock signal. Phase selection is performed through a very low overhead phase commutator in response to phase advance/retard inputs. A clock deglitcher matched to the stages of the ring oscillator eliminates spikes generated when the phase commutator switches.