Clock generators, clock generating methods, and mobile communication device using the clock generator

摘要

A clock generator and generating method, and a mobile communication device using the clock generator. A clock generator comprises a first accumulator, an oscillating signal generating circuit and a frequency adjustment circuit. The oscillating signal generating circuit generates a first oscillating signal and adjusts a frequency of the first oscillating signal according to a first overflow output signal of the first accumulator. The frequency adjustment circuit generates a frequency control value according to the first oscillating signal and a reference oscillating signal. The first accumulator accumulates the frequency control value according to the first oscillating signal to generate the first overflow output signal.