Patent ID: 8433024
Filing Date: 2013-04-30
Classification: H04B

Abstract:
1. A spread spectrum clock generator for adjusting a spread amount of an output clock signal, the spread spectrum clock generator comprising: a triangular modulator for generating a digital modulation signal, representing a decimal, according to a digital parallel signal, wherein the spread amount is in proportion to the digital parallel signal having ten bits, and the maximum value of the digital parallel signal and the digital modulation signal is 1111111111 a delta sigma modulator, electrically connected to the triangular modulator, for generating a divider divisor according to the digital modulation signal, wherein the divider divisor including the decimal and an integer; a frequency divider for dividing the frequency of the output clock signal according to the divider divisor to generate a divided clock signal, wherein the frequency of the divided clock signal is substantially equal to a quotient result from dividing the frequency of the output clock signal with the divider divisor; and a phase lock loop for adjusting the frequency of the output clock signal according to the divided clock signal and a reference clock signal.