On-chip spread spectrum synchronization between spread spectrum sources

An integrated circuit for on-chip spread spectrum synchronization between spread spectrum sources, the integrated circuit configured to carry out the steps of:

• obtaining, using one or more delay lines of one or more delay elements in a skitter circuit, a spread spectrum amplitude of a signal of a spread spectrum reference clock;
• determining, using one or more sticky latches in the skitter circuit, a spread width of the spread spectrum amplitude of the signal based on one or more edges of the signal;
• identifying a delay line of the one or more delay elements corresponding to a falling edge of the spread width of the signal using combinational circuitry of the skitter circuit;
• and
• synchronizing a spread spectrum signal of a spread spectrum slave clock with the signal of the spread spectrum reference clock based on the delay lines.

A computer program product for on-chip spread spectrum synchronization between spread spectrum sources, the computer program product comprising one or more computer readable storage media, and program instructions collectively stored on the one or more computer readable storage media, the program instruction comprising:

• program instructions to obtain, using one or more delay lines of one or more delay elements in a skitter circuit, a spread spectrum amplitude of a signal of a spread spectrum reference clock;
• program instructions to determine, using one or more sticky latches in the skitter circuit, a spread width of the spread spectrum amplitude of the signal based on one or more edges of the signal;
• program instructions to identify a delay line of the one or more delay elements corresponding to a falling edge of the spread width of the signal using combinational circuitry of the skitter circuit;
• and
• program instructions to synchronize a spread spectrum signal of a spread spectrum slave clock with the signal of the spread spectrum reference clock based on the delay line.