发明授权
- 专利标题: M-ary sequence clock spreading
- 专利标题(中): M序列时钟扩展
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申请号: US14240571申请日: 2012-09-27
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公开(公告)号: US08941419B2公开(公告)日: 2015-01-27
- 发明人: Fabien Journet
- 申请人: ST-Ericsson SA
- 申请人地址: CH Plan-les-Ouates
- 专利权人: ST-Ericsson SA
- 当前专利权人: ST-Ericsson SA
- 当前专利权人地址: CH Plan-les-Ouates
- 代理机构: Patent Portfolio Builders PLLC
- 优先权: EP11306253 20110929
- 国际申请: PCT/EP2012/069052 WO 20120927
- 国际公布: WO2013/045535 WO 20130404
- 主分类号: H03K21/00
- IPC分类号: H03K21/00 ; H03K21/08 ; H04B15/06
摘要:
The invention concerns a device for providing a spread frequency clock signal, comprising: —an input (51) to receive a first clock signal having a first frequency; —a programmable clock divider (52) to generate the spread frequency clock signal from the first clock signal; —a first Feedback Shift Register (21), FSR, comprising at least one stage, the FSR being adapted to generate any of an odd number M of different values, the FSR being adapted to pseudo-randomly generate a first sequence of first output values, each corresponding to one of said M different values, and to provide a first output value, according to the sequence, during each clock cycle of the spread frequency clock signal; —a control unit (22) adapted to select a division factor of the programmable clock divider based on the first output value of the FSR during each clock cycle of the spread frequency clock signal; —an output (53) for providing the spread frequency clock signal.
公开/授权文献
- US20140247073A1 M-ARY Sequence Clock Spreading 公开/授权日:2014-09-04
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