Digital spread spectrum method based on precise phase delta-sigma algorithm

A system comprising:

• a phase locked loop providing a spread spectrum parameter including a multiple-level parameter comprising a plurality of phase signals;
• and
• a phase spread spectrum controller that receives the spread spectrum parameter, the phase spread spectrum controller comprising:
• a phase mapper configured to map a quantized spread spectrum profile associated with the spread spectrum parameter,
• a phase controller configured to generate control signals based on the map profile, wherein the control signals include an integer control signal and a phase control signal,
• an integer divider configured to divide a phase signal of the plurality of phase signals with the integer control signal, and
• a phase synchronizer configured to synchronize the divided phase signal using the phase control signal to generate a reference clock for a spread spectrum clock generator.

An apparatus comprising:

• a phase mapper configured to map a quantized spread spectrum profile associated with a spread spectrum parameter from a phase locked loop, wherein the spread spectrum parameter includes a multiple-level parameter comprising a plurality of phase signals;
• a phase controller configured to generate control signals based on the map profile, wherein the control signals include an integer control signal and a control signal;
• an integer divider configured to divide a phase signal of the plurality of phase signals with the integer control signal;
• and
• a phase synchronizer configured to synchronize the divided phase signal using the phase control signal to generate a reference clock for a spread spectrum clock generator.