发明授权
US09565041B2 Adaptive equalization using correlation of edge samples with data patterns
有权
使用边缘样本与数据模式相关的自适应均衡
- 专利标题: Adaptive equalization using correlation of edge samples with data patterns
- 专利标题(中): 使用边缘样本与数据模式相关的自适应均衡
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申请号: US14702966申请日: 2015-05-04
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公开(公告)号: US09565041B2公开(公告)日: 2017-02-07
- 发明人: Robert E. Palmer
- 申请人: Rambus Inc.
- 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: Silicon Edge Law Group LLP
- 代理商 Arthur J. Behiel
- 主分类号: G01N21/00
- IPC分类号: G01N21/00 ; H04L27/01 ; H04L7/04 ; H04L25/06 ; H04L25/03
摘要:
An integrated receiver supports adaptive receive equalization. An incoming bit stream is sampled using edge and data clock signals derived from a reference clock signal. A phase detector determines whether the edge and data clock signals are in phase with the incoming data, while some clock recovery circuitry adjusts the edge and data clock signals as required to match their phases to the incoming data. The receiver employs the edge and data samples used to recover the edge and data clock signals to note the locations of zero crossings for one or more selected data patterns. The pattern or patterns may be selected from among those apt to produce the greatest timing error. Equalization settings may then be adjusted to align the zero crossings of the selected data patterns with the recovered edge clock signal.
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