发明公开
- 专利标题: ADJUSTABLE FREQUENCY DELAY-LOCKED LOOP
- 专利标题(中): 与浮动利率延迟循环
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申请号: EP05725604.2申请日: 2005-03-14
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公开(公告)号: EP1751867A2公开(公告)日: 2007-02-14
- 发明人: WILHITE, Jeffrey B., , CHARASKA, Joseph A., , GABATO, JR., Manuel P., , GAILUS, Paul H., , STENGEL, Robert E.,
- 申请人: MOTOROLA INC., A Corporation of the state of Delaware
- 申请人地址: 1303 East Algonquin Road Schaumburg, IL 60196 US
- 专利权人: MOTOROLA INC., A Corporation of the state of Delaware
- 当前专利权人: MOTOROLA INC., A Corporation of the state of Delaware
- 当前专利权人地址: 1303 East Algonquin Road Schaumburg, IL 60196 US
- 代理机构: Openshaw, Paul Malcolm
- 优先权: US830337 20040422
- 国际公布: WO2005109647 20051117
- 主分类号: H03L7/06
- IPC分类号: H03L7/06
摘要:
A delay-locked loop 300 that includes: an adjustable frequency source (320) for generating a clock signal (322) having an adjustable frequency; an adjustment and tap selection controller (310) for determining a first frequency as a function of a second frequency and for causing the frequency source to adjust the frequency of the clock signal to substantially the first frequency, the second frequency being the desired frequency of a first output signal; a delay line (330) configured to receive the clock signal for generating a plurality of phase-shifted clock signals; and a first selection circuit (370) for receiving the plurality of phase-shifted clock signals and for selecting, one at a time and under the control of the adjustment and tap selection controller, a first sequence of the phase-shifted clock signals for generating the first output signal having substantially the second frequency.
公开/授权文献
- EP1751867B1 ADJUSTABLE FREQUENCY DELAY-LOCKED LOOP 公开/授权日:2018-07-04
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