标签: crc检查

ThisapplicationnotedescribestheCyclicRedundancyCheck(CRC)theoryandimplementation.TheCRCcheckisusedtodetecterrorsinamessage.Twoimple-mentationsareshown:•TabledrivenCRCcalculation•LoopdrivenCRCcalculationThisapplicationdescribestheimplementationoftheCRC-16polynomial.However,thereareseveralfor-matsfortheimplementationofCRCsuchasCRC-CCITT,CRC-32orotherpolynomials.CRCisacommonmethodfordetectingerrorsintrans-mittedmessagesorstoreddata.TheCRCisaverypowerful,buteasilyimplementedtechniquetoobtaindatareliability.AN730CRCGeneratingandCheckingEXAMPLE1:MODULO-2CALCULATIONAuthors:ThomasSchmidtMicrochipTechnologyInc.1001100101XOR0100110111INTRODUCTION=1101010010ThisapplicationnotedescribestheCyclicRedundancyCheck(CRC)theoryandimplementation.TheCRCcheckisusedtodetecterrorsinamessage.Twoimple-……