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ARMEmbeddedSystemPaperARMintroductionIf,say,\embedded\is2008yearselectronicengineertalkingaboutoneofthemostwordin2009,mostofthetalkaboutawordis\ARM\.WhatisARM?HeisaBritishelectroniccompanyname,thefullnamemeanAdvancedRISCMachine.ThecompanywasfoundedinNovember1990,isapplecomputer,AcorncomputergroupandVLSITechnologyofthejointventure.Acornhaslaunchedtheworld'sfirstcommercialsinglechipRISCprocessors,andapplecomputerwashopewillRISCtechnologyintheirownsystem,theARMmicroprocessornewstandardssoarisesatthehistoricmoment.Attheendof80s,90ssemiconductorindustrychainjustappeardivisionoflabor,TSMC,LianDiansemiconductorfoundryetcareslowlyrise,someofthesiliconvalleyfablesscompaniesalsohavemushroomedemergingas,so-calledfablessdesigncompanychip,buttheproductionprocessisthepackagetogiveTSMCfoundryproductionetc.AndARMisfortheworldfirst,19yearsagocreatedchiplessproductionmodel,thatis,thecompanyisneitherproductionchip,alsodon'tdesignchips,butthedesignofeffectiveIPkernel,toauthorizeasemiconductorcompaniesuse,semiconductorcompanyintheARMtechnologybasedonaddyourowndesignandintroductionofchipproducts,finallybyOEMcustomersusethesechipstoconstructthesystembasedonARMtechnologyproducts.Thisway,abitlikethecommunicationsindustryinthequalcommandthesemiconductorindustryRAMBUS,theystandinthesemiconductorindustrychainupstreamoftheupstream.19yearsagoformedARMmayfacealotofrisk,becausenooneknowtheroadcannotwork,butnowthefactshaveproved,ARMawayanomanthrough,butitistherightpath.Asadditionalproducts,healsoletChina'sindustrymembersfromthewindowtounderstandtheBritishelectronicscompany,thesuccessoftheARMoftheBritishchiplessledthedevelopmentofthecompany.BecauseARMoftheproductisIPCore,withoutanyphysicalsenseofhardwareorsoftwareentities,thereforecanonlyregisteredinChinatobecome\consultation\company,despiteofitsbusinessconsultingisjustafew.ARMthecorebusinessissellingchipscoretechnologyIP,atpresentthewholeworldhas103giantITcompanyinthehomeARMtechnology,20largestsemiconductormanufacturersin19istheARMusers,includingTexasinstruments,stmicroelectronics,Philips,Intel,etc.Theonly20giantsdidn'tbuyARMauthorizedistheoldIntelrivalAMD,IntelbecausetheStrongARMprocessorisportable,andAMDistheacquisitionoftheAlchemycompanyfight,usedtheMIPSstructure.ARMproductintroductionARMofferaseriesofcore,systemexpansion,microprocessorandsystemchipsolutions.Becauseallproductsareusedageneralsoftwaresystem,sothesamesoftwarecanbeinallproductsoperation(intheoryso).Typicalproductsasfollows.CPUcoreARM7:small,fast,lowenergyconsumption,integratedRISCkernel,usedinmobilecommunication.ARM7TDMI(Thumb):thisisthemostauthorizedusersaproductwillARM7instructionsetwithThumbextensiontogether,inordertoreducememorycapacityandsystemcost.Atthesametime,italsouseembeddedICEcommissioningtechnicaltosimplifysystemdesign,andadigitalsignalprocessor(DSP)enhanceextendedtoimproveperformance.Theproductofthetypicalapplicationisdigitalcellularphonesandharddiskdrives.ARM710series,includingARM710,ARM710T,ARM720TandARM740T:lowprice,lowenergyconsumption,encapsulationtyperoutinesystemmicroprocessor,equippedwithCache(Cache),memorymanagement,writingbufferandJTAG.Widelyusedinhandheldcomputing,datacommunicationandconsumermultimedia.ARM7optimizedforuseonpriceandpowerconsumptionoftheapplicationofsensitivelowpowerconsumptionandanuclear,verylowpowerconsumption;Threepartsassemblylineandandvonneumannstructure,provide0.9MIPS/MHz.ARM9TDMI:thefivestagesGuanDaoHuaARM9kernel,alsoequippedwithThumbextension,commissioningandHarvardbus.Intheproductionprocessofthesamecase,performanceofARM7TDMItwiceasmany.Oftenusedfornetworkingandthetopplacebox.ARM940Tserieslow,lowenergyconsumption,highperformancesystemmicroprocessor,equippedwith,memorymanagementandwritebuffer.Applicationtotheadvancedenginemanagement,andsecuritysystem,thetopplacebox,portablecomputerandhigh-gradeprinter.StrongARM:highperformance,atthesametimesatisfytheneedoftheroutineuseamicroprocessortechnology,andjointresearchDEC,laterlicensetoIntel.SA110processor,SA1100PDAsystemchipandSA1500multimediaprocessorchipisusingthistechnique.ARM920T,began,ARM940T,ARM966E-S,ARM968E-S,ARM996HShasahighperformanceandlowpowerconsumptionofleadingamacrounit,level5linesstructure;Harvardstructureprovides1.1MIPS/MHz.ARM920Tandbegantheperformanceofthebuilt-inMMU,instructionsanddatacacheandhigh-speedAMBAbusinterface.AMBAchipbusisanopenstandard,hasbecometheconstructionanddevelopmentoflibrarySoCIPcriterionoftruth.AMBAadvancedhighperformancebus(AHB)interfacebyallnewARMnownuclearsupport,providedevelopmentalltheintegrateddesignsystem.ARM940Tbuilt-ininstructionsanddatacache,protectionunitandhigh-speedAMBAbusinterface.ARM7500andARM7500FE:highlyintegratedRISCsinglechipcomputer,acachetypebasedonARM732bitkernel,withmemoryandI/Ocontroller,threeDMAchannel,thevideocontrollerandpaletteofandstereoport;ARM7500FEincreasedbyafloatingpointunitandthesupportofEDODRAM.EspeciallysuitableforthetopboxandTVforthenetworkcomputer(NC).ARM10ARM1020E,ARM1022E,ARM1026EJ-S,seriesis64bitAHBinstructionsanddatainterface;6levelsofassemblylinestructur