发明申请
US20070162823A1 SYSTEM AND METHOD FOR OPTIMIZING ITERATIVE CIRCUIT FOR CYCLIC REDUNDENCY CHECK (CRC) CALCULATION
失效
用于优化循环冗余校验(CRC)计算的迭代电路的系统和方法
- 专利标题: SYSTEM AND METHOD FOR OPTIMIZING ITERATIVE CIRCUIT FOR CYCLIC REDUNDENCY CHECK (CRC) CALCULATION
- 专利标题(中): 用于优化循环冗余校验(CRC)计算的迭代电路的系统和方法
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申请号: US11676653申请日: 2007-02-20
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公开(公告)号: US20070162823A1公开(公告)日: 2007-07-12
- 发明人: Ming-I Lin , David Stauffer
- 申请人: Ming-I Lin , David Stauffer
- 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
- 主分类号: H03M13/00
- IPC分类号: H03M13/00
摘要:
A system for generating CRC code words associated with data ranging up to w-bytes in width to be communicated over a communications channel includes a first plurality of serially coupled code-generation blocks each for generating a CRC value based on data input to each block, respective blocks of the first plurality configured for receiving data inputs having respective byte widths ranging from 2N+M to 2N−L+M, where N is equal to log2(w), and M is an offset value, and L is a whole number based on a maximum propagation delay criteria; a second plurality of parallel coupled code-generation blocks each for generating a CRC value based on data inputs, respective blocks of the second plurality configured for receiving data having respective byte widths ranging from 2N−L−1+M to 20; and, a device for selecting particular CRC code generation blocks in the first and second pluralities to be included in a CRC calculation based on the data input; wherein any number of data input bytes may be processed.