公开(公告)号：US5689536A

公开(公告)日：1997-11-18

申请号：US770911

申请日：1996-12-20

申请人： Toshio Iyota ,  Takeo Kato

发明人： Toshio Iyota ,  Takeo Kato

IPC分类号： H04L7/033 ,  G06F1/10 ,  H03L7/08 ,  H04J3/06 ,  H04L7/08 ,  H04L7/00

CPC分类号： H03L7/0807 ,  H04J3/0688

摘要： A clock supply apparatus contains: a clock generating unit for generating a clock signal; a phase comparing unit for inputting a reference clock signal, and obtaining a phase difference between the reference clock signal and the clock signal generated by the clock generating unit; a frequency control unit for generating a control signal for controlling the frequency of the clock signal generated by the clock generating unit, based on the phase difference; a clock preciseness monitoring unit for monitoring preciseness of the clock signal, based on the phase difference; and a clock preciseness output unit for outputting information indicating the preciseness of the clock signal, based on the phase difference.

摘要翻译： 时钟提供装置包括：时钟产生单元，用于产生时钟信号; 相位比较单元，用于输入参考时钟信号，并获得基准时钟信号和由时钟产生单元产生的时钟信号之间的相位差; 频率控制单元，用于基于所述相位差产生用于控制由所述时钟生成单元生成的时钟信号的频率的控制信号; 时钟精度监视单元，用于基于所述相位差来监视所述时钟信号的精度; 以及时钟精度输出单元，用于基于相位差输出表示时钟信号的精度的信息。