发明授权
- 专利标题: Detection and correction of fuse re-growth in a microprocessor
- 专利标题(中): 微处理器中保险丝再生长的检测和校正
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申请号: US12609207申请日: 2009-10-30
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公开(公告)号: US08234543B2公开(公告)日: 2012-07-31
- 发明人: G. Glenn Henry , Charles John Holthaus , Terry Parks
- 申请人: G. Glenn Henry , Charles John Holthaus , Terry Parks
- 申请人地址: TW New Taipei
- 专利权人: VIA Technologies, Inc.
- 当前专利权人: VIA Technologies, Inc.
- 当前专利权人地址: TW New Taipei
- 代理商 E. Alan Davis; James W. Huffman
- 主分类号: G06F11/00
- IPC分类号: G06F11/00
摘要:
A microprocessor includes control hardware that receives and stores control values and provides the control values to circuits of the microprocessor for controlling operation of the microprocessor. The microprocessor also includes a first plurality of fuses selectively blown collectively with a predetermined value, and a second plurality of fuses selectively blown collectively with an error correction value computed from the predetermined value collectively blown into the first plurality of fuses. In response to being reset, the microprocessor reads the first and second plurality of fuses, detects an error in the value read from the first plurality of fuses using the value read from the second plurality of fuses, corrects the value read from the first plurality of fuses back to the predetermined value using the value read from the second plurality of fuses, and uses the corrected predetermined value to write the control values into the control hardware.
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