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公开(公告)号:US20100027585A1
公开(公告)日:2010-02-04
申请号:US12183854
申请日:2008-07-31
IPC分类号: H04B1/00
CPC分类号: H04B15/04
摘要: An electronic system having a spread spectrum clock. A spread spectrum clock source creates and transmits both a spread spectrum clock signal and a modulation signal. A spread spectrum clock generator uses a modulation waveform on the modulation signal to frequency modulate a reference oscillator frequency. A logic unit comprises a Phase Locked Loop that receives the spread spectrum clock signal and the modulation signal and generates a logic unit clock signal.
摘要翻译: 具有扩频时钟的电子系统。 扩频时钟源产生并发射扩频时钟信号和调制信号。 扩频时钟发生器使用调制信号上的调制波形对参考振荡器频率进行频率调制。 逻辑单元包括接收扩频时钟信号和调制信号并产生逻辑单元时钟信号的锁相环。
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公开(公告)号:US08340152B2
公开(公告)日:2012-12-25
申请号:US12183854
申请日:2008-07-31
IPC分类号: H04B1/00
CPC分类号: H04B15/04
摘要: An electronic system having a spread spectrum clock is disclosed. A spread spectrum clock source creates and transmits both a spread spectrum clock signal and a modulation signal. A spread spectrum clock generator uses a modulation waveform on the modulation signal to frequency modulate a reference oscillator frequency. A logic unit comprises a Phase Locked Loop that receives the spread spectrum clock signal and the modulation signal and generates a logic unit clock signal.
摘要翻译: 公开了一种具有扩频时钟的电子系统。 扩频时钟源产生并发射扩频时钟信号和调制信号。 扩频时钟发生器使用调制信号上的调制波形对参考振荡器频率进行频率调制。 逻辑单元包括接收扩频时钟信号和调制信号并产生逻辑单元时钟信号的锁相环。
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公开(公告)号:US20100061424A1
公开(公告)日:2010-03-11
申请号:US12206983
申请日:2008-09-09
申请人: Philip Raymond Germann , Mark James Jeanson , Jordan Ross Keuseman , Dennis James Wurth , George Russell Zettles, IV
发明人: Philip Raymond Germann , Mark James Jeanson , Jordan Ross Keuseman , Dennis James Wurth , George Russell Zettles, IV
IPC分类号: H04B1/69
CPC分类号: H04B1/69
摘要: A spread spectrum controller that adjusts frequency range subject to a bit error rate (BER). Measuring the bit error rate (BER) at different clock frequency ranges and comparing the BER to a BER threshold. Narrowing or widening the clock frequency range based on whether the BER is above or below the BER threshold to optimize a system for both performance and compliance.
摘要翻译: 扩频控制器,可以根据误码率(BER)调整频率范围。 测量不同时钟频率范围的误码率(BER),并将BER与BER阈值进行比较。 基于BER是否高于或低于BER阈值来缩小或扩大时钟频率范围,以优化系统的性能和兼容性。
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