Invention Grant
US08483345B2 Circuit and method for receiving serial data and serial data transmission system and method using the same 有权
用于接收串行数据和串行数据传输系统的电路和方法及其使用方法

  • Patent Title: Circuit and method for receiving serial data and serial data transmission system and method using the same
  • Patent Title (中): 用于接收串行数据和串行数据传输系统的电路和方法及其使用方法
  • Application No.: US13309881
    Application Date: 2011-12-02
  • Publication No.: US08483345B2
    Publication Date: 2013-07-09
  • Inventor: Saito Shinichi
  • Applicant: Saito Shinichi
  • Applicant Address: JP
  • Assignee: Rohm Co., Ltd.
  • Current Assignee: Rohm Co., Ltd.
  • Current Assignee Address: JP
  • Agency: Cantor Colburn LLP
  • Priority: JP2010-270454 20101203
  • Main IPC: H03D3/24
  • IPC: H03D3/24
Circuit and method for receiving serial data and serial data transmission system and method using the same
Abstract:
A receiving circuit which receives serial data, includes: a voltage controlled oscillator which generates a sampling clock signal having a frequency based on an input control voltage; a first frequency divider which divides the frequency of the sampling clock signal at a division rate M; a second frequency divider which divides a frequency of a clock signal based on the received serial data at a division rate N, N being a real number represented by M×q/p; a frequency comparator which generates a phase/frequency difference signal based on a phase difference between an output signal of the first frequency divider and an output signal of the second frequency divider; and a control voltage generating circuit which generates the control voltage to control a frequency of the voltage controlled oscillator based on the phase/frequency difference signal.
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