Cdr with sigma-delta noise-shaped control

A method of controlling an oscillation frequency and phase in a receiver comprising:

• generating, by a voltage-controlled oscillator, an output signal at the oscillation frequency and phase based on a proportional control word and an integral control word;
• generating, by a phase detector, an oscillation phase error from a sampled data stream;
• generating the proportional control word from the oscillation phase error;
• integrating the oscillation phase error to provide integer values and fractional values, the integer values equivalent to coarse integral control values having a coarse resolution,
• modulating the fractional values to provide fine integral control values having a fine resolution;
• and
• combining the coarse integral control values and the fine integral control values to provide the integral control word.

A non-transitory, machine-readable storage medium, having encoded thereon program code, wherein, when the program code is executed by a machine, the machine implements a method for controlling an oscillation frequency and phase in a receiver, comprising the steps of:

• generating, by a voltage-controlled oscillator, an output signal at the oscillation frequency and phase based on a proportional control word and an integral control word;
• generating, by a phase detector, an oscillation phase error from a sampled data stream;
• generating the proportional control word from the oscillation phase error;
• integrating the oscillation phase error to provide integer values and fractional values, the integer values equivalent to coarse integral control values,
• modulating the fractional values to provide fine integral control values;
• and
• combining the coarse integral control values and the fine integral control values to provide the integral control word.