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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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H8SX/1663 数据表(PDF) 796 Page - Renesas Technology Corp |
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H8SX/1663 数据表(HTML) 796 Page - Renesas Technology Corp |
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796 / 1158 page  Section 15 Serial Communication Interface (SCI, IrDA, CRC) Rev.1.00 Jun. 07, 2006 Page 744 of 1102 REJ09B0294-0100 15.11 CRC Operation Circuit The cyclic redundancy check (CRC) operation circuit detects errors in data blocks. 15.11.1 Features The features of the CRC operation circuit are listed below. • CRC code generated for any desired data length in an 8-bit unit • CRC operation executed on eight bits in parallel • One of three generating polynomials selectable • CRC code generation for LSB-first or MSB-first communication selectable Figure 15.43 shows a block diagram of the CRC operation circuit. CRC code generation circuit CRCCR CRCDIR CRCDOR Control signal [Legend] CRCCR: CRCDIR: CRCDOR: CRC control register CRC data input register CRC data output register Figure 15.43 Block Diagram of CRC Operation Circuit |
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