- 专利标题: Drift cancellation technique for use in clock-forwarding architectures
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申请号: US13341612申请日: 2011-12-30
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公开(公告)号: US08325861B2公开(公告)日: 2012-12-04
- 发明人: Kun-Yung Chang , Fariborz Assaderaghi
- 申请人: Kun-Yung Chang , Fariborz Assaderaghi
- 申请人地址: US CA Sunnyvale
- 专利权人: Rambus, Inc.
- 当前专利权人: Rambus, Inc.
- 当前专利权人地址: US CA Sunnyvale
- 代理机构: Morgan, Lewis & Bockius LLP
- 主分类号: H04L25/08
- IPC分类号: H04L25/08
摘要:
A circuit includes a frequency synthesizer, N phase mixers coupled to the frequency synthesizer, a plurality of receivers, and a calibration circuit. The frequency synthesizer is to receive a reference clock signal and is to output a primary clock signal. A respective phase mixer in the N phase mixers is to output a respective secondary clock signal having a corresponding phase. A respective receiver in the plurality of receivers is coupled to two of the N phase mixers, and at a respective time is to receive data in accordance with the respective secondary clock signal from one of the two phase mixers coupled to the respective receiver. The calibration circuit is to calibrate a secondary clock signal output by a respective phase mixer in the N phase mixers by adjusting the phase of the secondary clock signal of the respective phase mixer.
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