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基于AMBA总线的UART模块设计与验证.docx

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基于AMBA总线的UART模块设计与验证 Abstract Withtherapiddevelopmentofdigitalcommunicationtechnology,theUARTmodulehasbecomeanindispensableperipheralmoduleinthedesignofdigitalsystems.Inthispaper,wepresentthedesignandverificationofaUARTmodulebasedontheAMBAbusarchitecture.ThedesignusesVerilogcodelanguagetorealizethefunctionofUARTmoduleandistestedonasystem-on-chip(SOC)platform.TheresultsshowthatthedesignedUARTmodulecancorrectlytransmitandreceivedata,andiscompatiblewiththeAMBAbusarchitecture. Keywords:AMBAbus;UARTmodule;Verilogcode;system-on-chip Introduction Withthewidespreaduseofdigitalcommunicationtechnology,UARTmodulehasbecomeanindispensableperipheralmoduleinthedesignofdigitalsystems.TheUARTmoduleisresponsibleforconvertingtheparalleldatatransmittedbytheprocessorintoserialdatathatcanbetransmittedonthecommunicationline,andconvertingtheserialdatareceivedbythecommunicationlineintoparalleldatathatcanbeprocessedbytheprocessor.TheAMBAbusarchitectureisawidelyusedbusarchitectureindigitalsystems.Itsmainfeatureistheuseofasinglesharedbustoconnectallmodules,whichmakesiteasytointegratemodulesandsaveshardwareresources.Inthispaper,wepresentthedesignandverificationofaUARTmodulebasedontheAMBAbusarchitecture.ThedesignusesVerilogcodelanguagetorealizethefunctionofUARTmoduleandistestedonasystem-on-chipplatform. Design TheUARTmoduledesignedinthispapermainlyincludesthreefunctionalmodules:transmitter,receiver,andbaudrategenerator.Thetransmittermoduleisresponsibleforconvertingtheparalleldatareceivedfromtheprocessorintoserialdataandsendingittothecommunicationline.Thereceivermoduleisresponsibleforreceivingthedatasentfromthecommunicationlineandconvertingitintoparalleldatathatcanbeprocessedbytheprocessor.Thebaudrategeneratormoduleisresponsibleforgeneratingtheclocksignalrequiredforserialcommunicationandsettingthebaudrate. TheAMBAbusarchitectureusesasharedbustoconnectallmodules.Inordertoensurethatthemodulescancommunicatewitheachotherproperly,theAMBAspecificationstipulatesthatthebusarchitecturemusthaveastandardint