外文翻譯--模擬單片機(jī)外設(shè)的高級(jí)共仿真和綜合.doc

浙江工業(yè)大學(xué)浙西分校信電系系畢業(yè)論文(中英文資料)Modelingmicro-controllerperipheralsforhigh-levelco-simulationandsynthesisMappingabehavioronanembeddedsysteminvolveshardware-softwarepartitioningandassignmentofsoftwareandhardwaretaskstodifferentcomponents.Inparticular,softwaretasksinembeddedcontrollersaremostlyassignedtoamicro-controller.However,somemicro-controllerperipheralsareimplementedwithpartlyprogrammablecomponentsthatcanberegardedasverysimpleco-processorswithlimitedinstructionsetsandcapabilities.Embeddedsystemdesignersareusedtomappingsomesimplesoftwaretasksontothesesimpleco-processors,obtainingoverallperformancesthatcanbeordersofmagnitudesuperiortotheonesobtainedmappingallsoftwaretaskstothemicro-controlleritself.Inthispaper,weproposeamethodologytospecify,simulate,andpartitiontasksthatcanbeimplementedonprogrammablemicro-controllerperipheralssuchasTimingProcessingUnitsPUS).Followingourgeneralphilosophy,weletthedesignerproposeapartition,andweprovideanenvironment0toefficientlysimulateandevaluateaparticularimplementationchoice0toautomatedownstreamsynthesisforsoftware,hardware,aswellasperipheralprogrammingroutines.1ImplementationandCaseStudyWehaveimplementedsuchalibraryforthe68hcllfamilyofmicro-controllersfromMotorola.Itincludes:0Thetimerunit,implementinginputcaptureandoutputcomparefunctions,thatmeasuretimebetweeninputand0TheALIIconvertoutputeventsusinga16bitfreerunningcounter.0ThePWMgeneratorspresentonaspecificfamilymembertargetedforautomotiveapplications.EachfunctionofthetimerunitandofthePWMgeneratorisdescribedbothatthebehaviorallevel,usingthesimulatortimingfunctionstoimplementtime,andattheRegisterTransferlevel,usingacycle-accuratemodelofthehardware.Thelatterisalsousedforhardwareandsoftwaresynthesis,iftheperipheralisnotused.Croutinesareusedtointerfacetotheperipheral.TheprecisionoftheRTLmodelcanbescaled,bydividingtheclock.Asinglesimulationparametercontrolsthisscalingwithoutaffectingtheoverallbehavior(apartfromthelossofprecision).Wehavespecifiedthefunctionalityofacompletedashboardcontroller,thatusesthe68hcl1peripherals.Note,withthestandardco-designmethods,usingonlyfullyprogrammableprocessorsorhardware,allthetasksimplementedbytheperipheralscouldbeimplementedonlyassoftwaretasks,thusyieldingalessperformingsolution,orashardwaretasks,thusyieldingahighercostandlessflexiblesolution.Hencethemethodpresentedhereisrequiredinordertoobtainasolutionqualitycomparable浙江工業(yè)大學(xué)浙西分校信電系系畢業(yè)論文(中英文資料)withmanualdesign.Thespeedofthebehavioralsimulationwasabout260,000clockcyclespersecond.ThespeedoftheRTLsimulationrangedalmostlinearlyfrom2,000clockcyclespersecondto50,000clockcyclesdependingontheclockscalingfactor,from1to32.Theexperimentswereperformedona60MHzULTRAsparc.Atsynthesistime,theappropriateU0driversareextractedfromthelibraryandcustomizedbytheco-designtools.WealsosynthesizedahardwareimplementationforthePWMgeneratorsofthedashboardcontroller,becausetheyarenotavailableonallmembersofthe68hcllfamily.Weanalyzedthecosttrade-offsofusingsomesmallASICtoimplementthatfunction.Ahardwareimplementation,usingXILINXFPGAsforrapidprototypingpurposesrequired374CLBs(with203flip-flops)and60U0pads,thatwouldfitonaXILINX4010chip.2ConclusionTheproposedsolutionforhigh-levelspecificationofmicro-controllerperipheralsretainsmostoftheadvantagesandflexibilityofhardwaresoftwareco-design(uniformmodeling,fastco-simulation,formalverification,flexibilityintargetimplementation,.Thelimitisthatthedesignerhastodecideonwhetherornotafunctionisimplementableusingaparticularperipheral,andsometimessuchadecisionmustbemadeaboutperipheralsthatmaybeonlyslightlydifferentbetweendifferentmicro-controllers.Furtherresearchisstillneededtodevelopmappingtechniquesfromanunbiasedspecificationtopartiallyprogrammabledevices.浙江工業(yè)大學(xué)浙西分校信電系系畢業(yè)論文(中英文資料)模擬單片機(jī)外設(shè)的高級(jí)共仿真和綜合映射在一個(gè)嵌入系統(tǒng)上的行為包括硬件-軟件區(qū)分和對(duì)于不同成分上硬件和軟件的任務(wù)。特別的,在嵌入控制上的軟件任務(wù)由單片機(jī)執(zhí)行。但是,一些單片機(jī)外圍設(shè)備一起實(shí)現(xiàn)部分可設(shè)計(jì)的成分,這些成分被當(dāng)作限制性的指令組合和能力的非常簡(jiǎn)單的共處理器。嵌入系統(tǒng)設(shè)計(jì)者習(xí)慣于把一些簡(jiǎn)單的軟件工作映射到這些簡(jiǎn)單的共處理器,以獲得把大規(guī)模指令轉(zhuǎn)向獲得映射所有軟件任務(wù)的單片機(jī)本身。本文,我們打算一種方法去敘述,仿真,和區(qū)分那些可能是被用于可設(shè)計(jì)的單片機(jī)外圍設(shè)備,比如時(shí)間處理單元(TPUs)。通過(guò)我們的一般原理,我們讓設(shè)計(jì)者計(jì)劃分割,且我們提供一個(gè)環(huán)境去有效仿真和評(píng)估一個(gè)特殊執(zhí)行選擇。為軟件,硬件和外圍設(shè)備規(guī)劃常式自動(dòng)化下游的綜合。1、落實(shí)和個(gè)案研究我們已經(jīng)實(shí)現(xiàn)了來(lái)自摩托羅拉的單片機(jī)68hcll系列。它包括:定時(shí)單元,實(shí)現(xiàn)輸入攝入輸出比較功能,使用16位自由運(yùn)行計(jì)算器的輸入和輸出兩者間的測(cè)試時(shí)間。A/D轉(zhuǎn)換器PWM產(chǎn)生器在一個(gè)特定的系列成員上為汽車(chē)的申請(qǐng)對(duì)準(zhǔn)。我們已經(jīng)敘述完全的儀表板控制器的功能性,這些控制器使用68hcl1外圍設(shè)備。注意共設(shè)計(jì)方法的標(biāo)準(zhǔn),使用只有完全可設(shè)計(jì)的處理器或硬件,所有的被外設(shè)實(shí)現(xiàn)的工作能僅僅如軟件工作那樣實(shí)現(xiàn),如此產(chǎn)生一個(gè)更高的成本和更少靈活的方法。因此,在這里呈現(xiàn)的方法被要求為了獲得一個(gè)解決特性相比較手動(dòng)設(shè)計(jì)。行為模擬速度大約是260000時(shí)鐘循環(huán)每秒。RTL模擬速度范圍從2000時(shí)鐘循環(huán)每秒到5000時(shí)鐘循環(huán)每秒線(xiàn)性變化,依靠時(shí)鐘計(jì)數(shù)因素，從1到32。試驗(yàn)在60MHZ的ULTRAsparc上被運(yùn)行。綜合時(shí)間,適當(dāng)?shù)腎/O驅(qū)動(dòng)從圖書(shū)館和有共設(shè)計(jì)工具的客戶(hù)上被修改。我們也為儀表板控制器的PWM產(chǎn)生器綜合硬件實(shí)現(xiàn),因?yàn)樗麄冊(cè)?8hcll單片機(jī)系列所有成員不是適當(dāng)?shù)?