Method and apparatus for autocalibrating a plurality of phase-delayed clock signal edges within a reference clock period

Abstract

A method of calibrating a timing vernier includes autocalibrating a plurality phase-delayed clock signal edges to match respective ideal signal edges, the phase-delayed clock signal edges dividing one period of a reference clock, comparing a vernier clock signal edge to one of the plurality of phase-delayed clock signal edges after the phase-delayed clock signal edges have been autocalibrated, and adjusting the vernier clock signal edge to match the one phase-delayed clock signal edge so that the clock edge is calibrated and available for calibrated use by a user.

1 . A method of calibrating a timing vernier, comprising: 
 autocalibrating a plurality phase-delayed clock signal edges to match respective ideal signal edges, said phase-delayed clock signal edges dividing one period of a reference clock;    comparing a vernier clock signal edge to one of said plurality of phase-delayed clock signal edges after said phase-delayed clock signal edges have been autocalibrated;    adjusting said vernier clock signal edge to match said one phase-delayed clock signal edge;    wherein said clock edge is calibrated and available for calibrated use by a user.    
   
   
       2 . The method of  claim 1 , wherein said autocalibrating comprises: 
 calculating an average measurement delay between said phase-delayed clock signal edges to determine said ideal signal edges; and    adjusting said plurality of phase-delayed clock edges to match said ideal signal edges.