Integrated Device Technology, Inc.

Michael John Rupert

Leonid Goldin

Zaher Baidas

Silvana Rodrigues

Leon Goldin

Ernst J G Den Broeder

Ernst Jg Den Broeder

A method of distributing clock signals includes receiving a plurality of clock signals into a corresponding plurality of processing blocks; determining frequency offset data between a first clock signal of the plurality of clock signals and each of the other clock signals of the plurality of clock signals; periodically determining phase offset data between the first clock signal and the other clock signals; and transmitting the first clock signal, the frequency offset data, and the phase offset data on a pulse-width modulated clock signal. The method includes receiving a modulated clock signal, the modulated clock signal include a carrier clock signal, a frequency offset data, and a phase offset data on a pulse-width modulated clock signal; and recovering a plurality of clock signals based on the first clock signal, the frequency offset data, and the phase offset data.

Zero offset clock distribution

In accordance with some embodiments of the present invention, a method of minimizing timing error in a precise timing protocol system includes receiving an input 1PPS signal and a clock signal; outputting an output 1PPS signal a number of clock edges after receipt of the input 1PPS signal; adjusting the clock signal until the output 1PPS signal as jumped a clock cycle; and adjusting an offset to bring the output 1PPS signal to within a half clock period. In some embodiments, further adjustments can be made to the timestamp.

Minimizing timestamp error in PTP systems

A system and method for clock phase alignment at a plurality of line cards over a backplane of a communication system. Phase adjustments are continually made for the clock signals at the line cards by dynamically measuring the propagation delay between the timing device and each of the plurality of line cards and continuously communicating the appropriate phase adjustment to each of the plurality of line cards.

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Ottawa, Canada

Michael John Rupert