Clock generator and integrated circuit using the same and injection-locked phase-locked loop control method

摘要

A control technique for an injection-locked phase-locked loop (ILPLL) includes the following steps: providing the ILPLL with a sampling clock and an injection clock for an integral path and a proportional path of the ILPLL, respectively; making a change in the power level of the injection clock to get the phase error of the integral path of the ILPLL; and controlling the phase difference between the sampling clock and the injection clock based on the phase error of the integral path of the ILPLL.

主权项

1. A clock generator, comprising:
an injection-locked phase-locked loop for generation of an output clock, receiving a sampling clock and an injection clock for an integral path and a proportional path of the injection-locked phase-locked loop, respectively; a pulse-power controller, controlling power level of the injection clock; delay elements for the sampling clock and the injection clock; and a delay control circuit, coupled between the injection-locked phase-locked loop and the delay elements to control the delay elements based on a phase error of the integral path of the injection-locked phase-locked loop, wherein the phase error is due to a change, caused by the pulse-power controller, in the power level of the injection clock.