Patent ID: 8494092

Claim:
Apparatus for controlling an oscillation frequency and phase in a receiver comprising: a voltage-controlled oscillator configured to generate an output signal at the oscillation frequency and phase based on a proportional control word and an integral control word; a phase detector configured to generate an oscillation phase error from a sampled data stream; a proportional loop control configured to generate the proportional control word from the oscillation phase error; an integral loop control comprising: an integrator, coupled to the phase detector, configured to integrate the oscillation phase error to provide integer values and fractional values, the integer values equivalent to coarse integral control values having a coarse resolution, and a modulator configured to modulate the fractional values to provide fine integral control values having a fine resolution; and a combiner configured to combine the coarse integral control values and the fine integral control values to provide the integral control word to the voltage-controlled oscillator.