Patent ID: 6671341
Filing Date: 2003-12-30
Classification: H03L

Abstract:
A system for generating a glitch-free output signal having a frequency, said system comprising:a frequency divider unit for receiving a signal having an input frequency, said frequency divider unit configured to generate a plurality of phase-shifted signals; a retimer coupled to said frequency divider unit and configured to receive said phase-shifted signals and to generate multiplexer input signals, to receive retimer control signals to generate corresponding multiplexer control signals that correspond to a time when a phase-shifted signal experiences a transition, and to change the multiplexer input signal which is connected to an output terminal of said multiplexer simultaneously with the â€œlowâ€  to â€œhighâ€  transition of the phase-shifted signal being switched to; and a multiplexer coupled to said retimer and having input terminals configured to receive said multiplexer input signals, wherein said multiplexer is controlled by said multiplexer control signals so as to alternately and successively provide at its output terminal one of said multiplexer input signals.