发明授权
- 专利标题: Elastic interface de-skew mechanism
- 专利标题(中): 弹性界面去歪斜机制
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申请号: US11055866申请日: 2005-02-11
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公开(公告)号: US07461287B2公开(公告)日: 2008-12-02
- 发明人: Daniel M. Dreps , Frank D. Ferraiolo , Gary A. Peterson , Robert J. Reese
- 申请人: Daniel M. Dreps , Frank D. Ferraiolo , Gary A. Peterson , Robert J. Reese
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 代理机构: Winstead, P.C.
- 代理商 Casimer K. Salys
- 主分类号: G06F1/04
- IPC分类号: G06F1/04 ; G06F13/42
摘要:
A mechanism for de-skewing and aligning data bits sent between two chips on an elastic interface. On the receiving end of an elastic interface, the eye of each data bit within a clock/data group is delayed by less than a bit time to align the eyes with the nearest clock edge of a received clock signal. In addition to aligning the eyes of the individual data bits with the nearest clock edge, IAP patterns are used to determine the amount of further delay needed to line up the individual data beats from each data bit. If the data beats for the data bits are not aligned, all but the slowest data beat are delayed to align the data beats for all bits. The additional delay is achieved using sample latches that result in a delayed signal with less jitter. As a result of having less jitter, the received, de-skewed, and aligned clock/data group can be forwarded to the operative portion of the receiving chip at an increased frequency.
公开/授权文献
- US20060184817A1 Elastic interface de-skew mechanism 公开/授权日:2006-08-17
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