发明授权
- 专利标题: Clock and data recovery circuit
- 专利标题(中): 时钟和数据恢复电路
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申请号: US11699007申请日: 2007-01-29
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公开(公告)号: US07912167B2公开(公告)日: 2011-03-22
- 发明人: Takanori Saeki
- 申请人: Takanori Saeki
- 申请人地址: JP Kawasaki-shi, Kanagawa
- 专利权人: Renesas Electronics Corporation
- 当前专利权人: Renesas Electronics Corporation
- 当前专利权人地址: JP Kawasaki-shi, Kanagawa
- 代理机构: McGinn IP Law Group, PLLC
- 优先权: JP2006-024489 20060201
- 主分类号: H04L7/00
- IPC分类号: H04L7/00
摘要:
A clock and data recovery circuit includes a four-phase generation circuit that generates four-phase clock signals with phases thereof being equally spaced by 90 degrees, a first interpolator and a second interpolator, each of which receives two of the clocks with phases thereof separated to each other by 180 degrees, performs phase interpolation, and outputs a signal obtained by the interpolation and a signal with a phase reverse to a phase of the interpolated signal. A four-phase to eight-phase conversion circuit receives the four-phase clocks from the first and second interpolators, buffers the four-phase clock signals output from the first interpolator and the second interpolator and outputs the buffered four-phase clock signals without alteration, and generates four-phase clocks each obtained by interpolation of two of the clock signals with the mutually adjacent phases among the four-phase clock signals output from the first interpolator and the second interpolator.
公开/授权文献
- US20070177700A1 Clock and data recovery circuit 公开/授权日:2007-08-02
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