High resolution sample clock generator with deglitcher

Details High resolution sample clock generator with deglitcher High resolution sample clock generator with deglitcher

1989-06-21

1991-05-21

Safourek, Benedict V.

Pulse or digital communications

Spread spectrum

Direct sequence

331 49, 328155, H03D 324

Patent

active

050181696

ABSTRACT:
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.

REFERENCES:
patent: 4575860 (1986-03-01), Scordo
patent: 4584695 (1986-04-01), Wong et al.
patent: 4780889 (1988-10-01), Ley et al.

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