Patent ID: 6525615
Filing Date: 2003-02-25
Classification: G11B,H03L

Abstract:
A method of controlling a variable phase in a phase locked loop comprising:providing an oscillator; said oscillator having a plurality of phases, therein having first and second adjacent phases; providing a phase selector; inputting said first and second adjacent phases from said oscillator into said phase selector; controlling a variable phase wherein said phase selector selects a desired phase among said variable phase between said fist and second adjacent phases, said phase selector outputting the selected phase within a phase locked loop thereby controlling said variable phase with the phase locked loop; providing a timing signal; outputting said timing signal to a proportional-integral controller thereby generating an oscillator control signal; and outputting said oscillator control signal to said oscillator wherein said first and second phases employ the oscillator control signal generated by said timing signal to represent a timing error.