发明申请
- 专利标题: PHASE-LOCK ASSISTANT CIRCUITRY
- 专利标题(中): 相位锁定辅助电路
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申请号: US12835130申请日: 2010-07-13
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公开(公告)号: US20120013374A1公开(公告)日: 2012-01-19
- 发明人: Chih-Chang LIN , Chan-Hong CHERN , Steven SWEI , Ming-Chieh HUANG , Tien-Chun YANG
- 申请人: Chih-Chang LIN , Chan-Hong CHERN , Steven SWEI , Ming-Chieh HUANG , Tien-Chun YANG
- 申请人地址: TW Hsinchu
- 专利权人: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
- 当前专利权人: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
- 当前专利权人地址: TW Hsinchu
- 主分类号: H03L7/06
- IPC分类号: H03L7/06
摘要:
Some embodiments regard a circuit comprising: a first circuit configured to lock a frequency of an output clock to a frequency of a reference clock; a second circuit configured to align an input signal to a phase clock of the output clock; a third circuit configured to use a first set of phase clocks of the output clock and a second set of phase clocks of the output clock to improve alignment of the input signal to the phase clock of the output clock; and a lock detection circuit configured to turn on the first circuit when the frequency of the output clock is not locked to the frequency of the reference clock; and to turn off the first circuit and to turn on the second circuit and the third circuit when the frequency of the output clock is locked to the frequency of the reference clock.
公开/授权文献
- US08179162B2 Phase-lock assistant circuitry 公开/授权日:2012-05-15