发明申请
- 专利标题: Circuits and Methods for Clock and Data Recovery
- 专利标题(中): 时钟和数据恢复的电路和方法
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申请号: US12126655申请日: 2008-05-23
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公开(公告)号: US20090290672A1公开(公告)日: 2009-11-26
- 发明人: Peter Ho
- 申请人: Peter Ho
- 申请人地址: US CO Fort Collins
- 专利权人: AVAGO TECHNOLOGIES FIBER IP (SINGAPORE) PTE. LTD
- 当前专利权人: AVAGO TECHNOLOGIES FIBER IP (SINGAPORE) PTE. LTD
- 当前专利权人地址: US CO Fort Collins
- 主分类号: H04L7/00
- IPC分类号: H04L7/00
摘要:
A clock-data recovery circuit includes a phase rotator, a phase detector and a charge pump. The phase rotator receives first and second reference clocks and differential control signals. The phase rotator generates a modified clock signal responsive to the first and second reference clocks and the control signals. The phase detector receives a data signal and the modified clock signal. The phase detector generates a modified data signal and a phase error signal responsive to the data signal and the modified clock signal. The charge pump receives the phase error signal and generates the differential control signals, which direct the phase rotator to interpolate between select clock phases.
公开/授权文献
- US08090067B2 Circuits and methods for clock and data recovery 公开/授权日:2012-01-03
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