发明授权
- 专利标题: Transparent multi-hit correction in associative memories
- 专利标题(中): 联想记忆中的透明多点校正
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申请号: US11609416申请日: 2006-12-12
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公开(公告)号: US07788443B2公开(公告)日: 2010-08-31
- 发明人: Michael J. Lee , Vinod Ramadurai , Bao G. Truong
- 申请人: Michael J. Lee , Vinod Ramadurai , Bao G. Truong
- 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
- 代理商 Francis Lammes; Stephen J. Walder, Jr.; Diana R. Gerhardt
- 主分类号: G06F13/00
- IPC分类号: G06F13/00 ; G06F13/28 ; G06F11/00 ; G11C15/00
摘要:
A mechanism is provided for transparent multi-hit correction in associative memories. A content associative memory (CAM) device is provided that transparently and independently executes a precise corrective action in the case of a multiple hit being detected. The wordlines of a CAM array are modified to include a valid bit storage circuit element that indicates whether or not the corresponding wordline is valid or not. In operation, if multiple hits are detected, the multiple hit is signaled to the host system and the particular entries in the CAM array corresponding to the multiple hits are invalidated by setting their associated valid bit storage circuit elements to an invalid value or clearing the value in the associated valid bit storage circuit element. Any data returned to the host system as a result of the multiple hits is invalidated in the host system in response to the signaling of the multiple hits.
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