发明授权
US08941419B2 M-ary sequence clock spreading 有权
M序列时钟扩展

  • 专利标题: M-ary sequence clock spreading
  • 专利标题(中): M序列时钟扩展
  • 申请号: US14240571
    申请日: 2012-09-27
  • 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
M-ary sequence clock spreading
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.
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