Section 14 CRC Operation Circuit (CRC)
Rev. 1.00 Mar. 12, 2008 Page 497 of 1178
REJ09B0403-0100
Section 14 CRC Operation Circuit (CRC)
This LSI has a cyclic redundancy check (CRC) operation circuit to enhance the reliability of data
transfer in high-speed communications, etc. The CRC operation circuit detects errors in data
blocks.
14.1 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 14.1 is a block diagram of the CRC operation circuit.
Internal bus
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 14.1 Block Diagram of CRC Operation Circuit
Summary of Contents for H8S Family
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Page 70: ...Section 1 Overview Rev 1 00 Mar 12 2008 Page 22 of 1178 REJ09B0403 0100...
Page 108: ...Section 2 CPU Rev 1 00 Mar 12 2008 Page 60 of 1178 REJ09B0403 0100...
Page 116: ...Section 3 MCU Operating Modes Rev 1 00 Mar 12 2008 Page 68 of 1178 REJ09B0403 0100...
Page 152: ...Section 5 Interrupt Controller Rev 1 00 Mar 12 2008 Page 104 of 1178 REJ09B0403 0100...
Page 206: ...Section 6 Bus Controller BSC Rev 1 00 Mar 12 2008 Page 158 of 1178 REJ09B0403 0100...
Page 420: ...Section 9 14 Bit PWM Timer PWMX Rev 1 00 Mar 12 2008 Page 372 of 1178 REJ09B0403 0100...
Page 476: ...Section 12 Watchdog Timer WDT Rev 1 00 Mar 12 2008 Page 428 of 1178 REJ09B0403 0100...
Page 552: ...Section 14 CRC Operation Circuit CRC Rev 1 00 Mar 12 2008 Page 504 of 1178 REJ09B0403 0100...
Page 712: ...Section 18 I2 C Bus Interface IIC Rev 1 00 Mar 12 2008 Page 664 of 1178 REJ09B0403 0100...
Page 804: ...Section 19 LPC Interface LPC Rev 1 00 Mar 12 2008 Page 756 of 1178 REJ09B0403 0100...
Page 838: ...Section 20 Ethernet Controller EtherC Rev 1 00 Mar 12 2008 Page 790 of 1178 REJ09B0403 0100...
Page 964: ...Section 24 RAM Rev 1 00 Mar 12 2008 Page 916 of 1178 REJ09B0403 0100...
Page 1066: ...Section 25 Flash Memory Rev 1 00 Mar 12 2008 Page 1018 of 1178 REJ09B0403 0100...
Page 1098: ...Section 26 Boundary Scan JTAG Rev 1 00 Mar 12 2008 Page 1050 of 1178 REJ09B0403 0100...
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