发明申请
- 专利标题: DLL CIRCUIT AND CONTROL METHOD THEREOF
- 专利标题(中): DLL电路及其控制方法
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申请号: US12603850申请日: 2009-10-22
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公开(公告)号: US20100102861A1公开(公告)日: 2010-04-29
- 发明人: Hiroki TAKAHASHI , Toru ISHIKAWA
- 申请人: Hiroki TAKAHASHI , Toru ISHIKAWA
- 申请人地址: JP Tokyo
- 专利权人: ELPIDA MEMORY, INC.
- 当前专利权人: ELPIDA MEMORY, INC.
- 当前专利权人地址: JP Tokyo
- 优先权: JP2008-274440 20081024
- 主分类号: H03L7/06
- IPC分类号: H03L7/06
摘要:
A DLL circuit includes a first phase comparing circuit that compares phases between an input clock signal and an output clock signal, a first delay circuit that delays the output clock signal, and a second phase comparing circuit that compares phases between the input clock signal and an output signal of the first delay circuit. A delay amount in the variable delay circuit is controlled based on a comparison result of the first phase comparing circuit and a comparison result of the second phase comparing circuit.
公开/授权文献
- US08035432B2 DLL circuit and control method thereof 公开/授权日:2011-10-11
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