Patent ID: 8692598

Claim:
An apparatus, comprising: digitally controlled oscillator circuitry; feedback circuitry operatively coupled to the digitally controlled oscillator circuitry; and comparison circuitry operatively coupled to the digitally controlled oscillator circuitry and the feedback circuitry; wherein the digitally controlled oscillator circuitry is capable of generating a clock signal; wherein the feedback circuitry, in response to the clock signal, is capable of generating a first digital value representing a detected phase of the clock signal for a given cycle of the clock signal; wherein the comparison circuitry, in response to the first digital value and to a second digital value representing a reference phase, is capable of generating a phase error value which is useable to generate a first digital control word for controlling a frequency associated with the clock signal; wherein the digitally controlled oscillator circuitry further comprises adjustment circuitry that is capable of, in response to a second digital control word, applying a phase adjustment to the clock signal.