Transcription of CRC Generating and Checking - Microchip Technology
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CRC Generating and Checking - Microchip Technology
2000 Microchip Technology 1AN730 INTRODUCTIONThis application note describes the cyclic RedundancyCheck (CRC) theory and implementation. The CRCcheck is used to detect errors in a message. Two imple-mentations are shown: Table driven CRC calculation Loop driven CRC calculationThis application describes the implementation of theCRC-16 polynomial. However, there are several for-mats for the implementation of CRC such asCRC-CCITT, CRC-32 or other is a common method for detecting errors in trans-mitted messages or stored data. The CRC is a verypowerful, but easily implemented technique to obtaindata reliability. THEORY OF OPERATIONThe theory of a CRC calculation is straight forward.
2000 Microchip Technology Inc. Preliminary DS00730A-page 1 AN730 INTRODUCTION This application note describes the Cyclic Redundancy Check (CRC) theory and implementation. The CRC
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