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H8SX1663 Datasheet(PDF) 796 Page - Renesas Technology Corp

Part # H8SX1663
Description  Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series
PDF  1158 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

H8SX1663 Datasheet(HTML) 796 Page - Renesas Technology Corp

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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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