发明名称 |
Circuit for generating spread spectrum clock |
摘要 |
Circuit for generating a spread spectrum clock (CGSSC) that employs a mechanism to modulate the input voltage (V_ctrl) to the VCO to achieve dithering. The CGSSC includes a voltage controller oscillator (VCO) that generates an output signal (F_out). The VCO includes an input coupled to a voltage control node for receiving a voltage signal and an output for generating a clock signal that has a frequency dependent on the received voltage signal. A VCO input voltage modulation mechanism (VIVMM) is coupled to the voltage control node (V_ctrl) for modulating or adjusting the voltage at the VCO input voltage node in a controlled manner to generate a spread spectrum clock.
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申请公布号 |
US7167059(B2) |
申请公布日期 |
2007.01.23 |
申请号 |
US20040820691 |
申请日期 |
2004.04.08 |
申请人 |
AVAGO TECHNOLOGIES GENERAL IP (SINGAPORE) PTE. LTD. |
发明人 |
ABRAHAM ROBERT A.;WEAVER SCOTT R. |
分类号 |
G06F1/04;H03L7/00;H03B29/00;H03C3/00;H03L7/08;H03L7/089;H03L7/18;H04B1/69;H04B1/707;H04L7/033 |
主分类号 |
G06F1/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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