毕业设计论文 外文文献翻译 中英文对照 自动化相关 可编程逻辑控件(CPLD/FPGA)Word文件下载.docx
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毕业设计论文 外文文献翻译 中英文对照 自动化相关 可编程逻辑控件(CPLD/FPGA)Word文件下载.docx
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①advancedprogrammingveryeasy.CPLD/FPGAproducts,partofthedaisychainin-systemprogrammingmode.Thisadvancedmethodofprogramminghasbecometheworld'
sdevelopmenttrendofvarioustypesofprogrammabledevices.Becauseitobviatestheexpensive
andinconvenientoperationdedicatedprogrammer,justneedtodownloadaverysimpleprogrammingcircuitandaPC,printercommunicationcableontheline.Itisnotprogrammedpressure,theTTLlevellinecanbeprogrammedatanytime,andtheso-calledmulti-chipdaisychainserialprogramming.Itsprogrammingupto1milliontimes,suchasLattice'
sislesandAMD'
sMACHfamily.Inaddition,programmingcaneasilyachieveinfrared,ultrasonicorradioprogrammingprogrammer,orthroughthetelephonelineremoteonlineprogramming.Thesefeaturesareincommunicationdevicesandmilitaryspecialpurposedevices.
②highspeed.CPLD/FPGAclockdelayofuptonslevel,combinedwiththeparallelwork,intheultrahigh-speedreal-timemonitoringandcontrolapplicationsandhasaverybroadapplicationprospects.IfyouusetheFLEX10K50ALTERAdevelopmentnetworkimagethrough
USBinterface,real-timeencryption/decryptionASICsystem,carriedoutinFLEX10K50upto56-bitparallelbinaryarithmetic,eachencryption/decryptioncycleofonlya fewμs,andtheMCUtakesnearly1minute.AnotherexampleisinthemoldmanufacturingEDMprocessing,motorcontrol,theeffectiveoperationoftheprocessingpartsfromonlyafewμs,whichisrequiredforthecontrolofsensitiveandhigh-speedcircuitfeedingservice,notashortcircuitorarcingislessthanthebreakdown.Obviously,thiswork,MCUisdifficulttodirectlyparticipate.IfdirectfeedingbyispLSI1032servicecontrol,feedingontheclosed-loopmotorspeedservice,theuseofsamplingispLSIdirectcontroloftheAD1674,8-bitaccuracyusingamaximumspeedof8μs/each,inordertoachieveagoodclosed-loopspeedcontrolofsynchronousand.
③highreliability.Inhighreliabilityapplications,MCU’sshortcomingsasaCPLD/FPGAapplicationleftalotofuseless.AlthoughthefunctionofthisgroupdevelopedthedeviceisachievedthroughtheEDAsoftware.Butthephysicalmechanismlikea74LS164aspurelya
hardwarecircuitisveryreliable.Throughtherationaldesignofmostapplications,noneedto
considerthecomplexresetandinitialization.Designusingasimplestatementjustidleinitial
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entryintothesame,wecaneffectivelypreventanypossible"
death"
phenomenon.Becauseitisworkinginparallel,itcanbeusedaseitherinputpininterruptmonitoringissimilartopinMCU,andthereactionrateisonlysatisfiedwonderfulclass.CPLD/FPGA,highreliabilityisalsoreflectedinalmosttheentiresystemcanbedownloadedonthesamechip,thusgreatlyreducingthevolume,easytomanageandshielding.
④powerful,applicationsarebroad.Currently,CPLD/FPGAtoselectalargerange,accordingtodifferentapplicationsusedifferentcapacitychips,suchasLattice'
sispLSIandAMD'
sMACH,thesmallestchipforthe1000equivalentlogicgates,thelargestofseveralone
hundredthousand.ALTERAandXILINXgateintroducedmillionsofCPLD/FPGAcanachievealmostanyformofdigitalcircuitsordigitalsystemsdesign.Withthewideapplicationofsuchdevicesandthecostdroppedsignificantly,andthemarketrateincrease,CPLD/FPGAinthesystemrateisalmostequaltothedirectapplicationofASICdevelopment.
⑤easytouse,developconvenient.ThedesignofSCMexpertsinapplicationsystemisverysimple.However,forbeginners,suchastheCPU'
swork,manyoftheusageofspecialregisters,interruptconcepts,etc.,reallyisnotaneasytask.Incontrast,CPLD/FPGA
applicationdoesnotrequiretoomuchpreparationtolearntheknowledge,aslongasalittlebitofdesignofdigitalcircuitsandcomputersoftwarebasics,youcanintheshorttermtohandlebasicdesignanddevelopmentskills.Andinturn,tolearntouseSCM,itappearedhundredsoftimesmore.Thisisundoubtedlyhighforustoprovideashortcuttolearning,standingontheshouldersofgiants,ofcoursefastertobesuccessful.Itcanbepredicted,thestudyofEDAtechnologyboomandtheCPLD/FPGAapplicationboomneverinferiortoboomoverthepast10years,singlechip.
⑥shortdevelopmentcycle.EDAsoftwarefeaturesasthecorrespondingsoundandpowerful,convenientandreal-timesimulationcapabilities,andintuitiveimageofthedevelopmentprocess,andthehardwarefactorsinvolvedverylittle,itcanbeverycomplicatedin
averyshorttimethesystemdesign,whichistheproducttomarketquicklythemostvaluablefeatures.SomeEDAexpertspredict,thefutureofl
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