Provided is a technique that can generate a spread spectrum clock signal in all of an upper-spread mode, a down-spread mode, and a center-spread mode. A spread spectrum clock generator (2) spreads a spectrum of a signal with a predetermined carrier frequency to generate a spread spectrum clock signal under the control of a control unit (13). The control unit includes carrier frequency correction control means (13b). The carrier frequency correction control means shifts the predetermined carrier frequency to generate, from one spread mode, a spread spectrum clock signal of another pseudo spread mode.
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机译:提供了一种可以在上扩展模式,下扩展模式和中心扩展模式的全部中生成扩展频谱时钟信号的技术。扩展频谱时钟发生器( 2 B>)在控制单元( 13 B>)的控制下扩展具有预定载波频率的信号的频谱,以生成扩展频谱时钟信号。控制单元包括载波频率校正控制装置( 13 B> b I>)。载波频率校正控制装置移动预定载波频率,以从一个扩展模式生成另一伪扩展模式的扩展频谱时钟信号。
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