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Revision 2 as of 2013-10-17 11:00:02
  • CRC

CRC

A cyclic redundancy check (CRC) is an error-detecting code.

http://en.wikipedia.org/wiki/Cyclic_redundancy_check http://en.wikipedia.org/wiki/Computation_of_cyclic_redundancy_checks

HDLC like framing

The http://www.ietf.org/rfc/rfc1662.txt has two examples of CRC calculations.

Polynom CRC-16: 0x8408

CRC-16-IBM

Bisync, Modbus, USB, ANSI X3.28, SIA DC-07, many others; also known as CRC-16 and CRC-16-ANSI

Polynom: x16 + x15 + x2 + 1

Normal

Reversed

Reversed reciprocal

0x8005

0xA001

0xC002

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