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1、三种常用SoC片上总线的分析与比较ThreecommonanalysisandcomparisonofthebusonSoCfilmsThreecommonanalysisandcomparisonofthebusonSoCfilmsHeisliruiofthenationaldefensetechnologyuniversityAbstract:withthedevelopmentofintegratedcircuitdesigntechnology,inthesystem(SoC),moreandmorefunctionsareus
2、edtoconstructthesystem・Thebusisthemainwaythesepartsareconnected,andseveralcompaniesandorganizationshavedevelopedavarietyofSoCdesignedbussystems・ThispaperintroducesthecommonthreekindsoffilmsinSoC,thebusAMBA,WishboneandAvalon,andanalyzesandcomparesitsfeatures,andexpoundsit
3、susescopeforitsdifferentcharacteristics・Keywords:theSoCfilmbusAMBAWishboneAvalonLeadit??Theembeddedsystemisahotspotinthedevelopmentofcomputerindustrytoday.Withtherapiddevelopmentofverylargescaleintegratedcircuit,semiconductorindustryentersthedeepsub-micronera,thedevicefe
4、aturesizesaregettingsmaller,thechipsizeismoreandmorebig,canbeintegratedonasinglechipofmillionstohundredsofmillionsoftransistors・SodenseintegrationthatwearenowabletobeforeasmallpieceoftheChipbytheCPUandseveralI/OinterfaceandseveralChiptorealizethefunctionintegration,bymon
5、olithicintegratedcircuitconstituteapowerful,completeSystem,thisiswhatweusuallycallonaChipSystemSoC(SystemonChip).Duetoitscompletefunction,SoCisbecomingthemainstreamofembeddedsystemdevelopment・??TheSoCsystemhasmanyadvantagesovertheboardsystem:??MakefulluseofIPtechnology,r
6、educeproductdesigncomplexityanddevelopmentcost,andshortenproductdevelopmenttime;??Asinglechipintegratedcircuitcaneffectivelyreducesystempowerconsumption.??Reducingthenumberofexternalpinsinthechipandsimplifyingthecomplexityofsystemprocessing;??Reducingthesignaltransmissio
7、nbetweenperipheraldriveinterfaceunitsandcircuitboards,speedingupdatatransferandprocessingspeed;??Theembeddedcircuitcanreduceorevenpreventthesystemsignalinterferencefromcircuitboardsignaltransmission.??ThemostdistinctivefeatureoftheSoCdesignprocessistheIPreusetechnique・Th
8、eIP(whichgivestheIPdefinition)ischosentointegrateintoachip・BecausethedesignoftheIPkernelvaries,theconne