Patent ID: 7937424
Filing Date: 2011-05-03
Classification: G06F,H03L

Abstract:
1. An apparatus, comprising: a digital phase detector unit configured to output a first frequency setting signal based on a multiplicity of input signals, the multiplicity of input signals including at least a first reference signal having a first frequency; a current phase feedback signal, and a target phase signal; a digital target phase accumulator unit configured to output the target phase signal based on a multiplicity of input signals including a second reference signal input, and a target phase input value; a digital frequency value generator unit configured to receive the first frequency setting signal and output a frequency value signal; a digital oscillator unit configured to receive the frequency value signal, and further configured to provide a digital output signal at a second frequency that comprises integer and fractional phase information of the digital output signal, wherein the digital output signal is fed back as the current phase feedback signal to the phase detector unit; and an output module configured to output a modified output signal based on the fractional phase information and independent of the integer phase information in the digital output signal generated by the digital oscillator unit.