ADI-ADSP-BF609-Blackfin處理器高清視頻開發(fā)方案

ADIADSP－BF609Blackfin處理器高清視頻開發(fā)方案關(guān)鍵字：工業(yè)控制,儀器儀表,馬達控制;汽車電子ADI公司的ADSP-BF609是Blackfin雙核處理器,工作頻率高達1GHz,硬件支持高清視頻分析.ADSP-BF609采用ADI/INTEL微信號架構(gòu)(MSA),每個核包含兩個16位MAC,兩個40位ALU和40位桶形移位RISC類寄存器和指令模式,具有先進的調(diào)試,跟蹤和性能監(jiān)視,主要用在從汽車電子到嵌入式工業(yè),儀表和馬達控制等應用.本文介紹了ADSP-BF609主要特性,方框圖,Blackfin處理器核框圖以及ADSP-BF609EZ-KITLite?評估系統(tǒng)主要特性,框圖,電路圖和材料清單.ADI

TheADSP-BF609processorisamemberoftheBlackfinfamilyofproducts,incorporatingtheAnalogDevices/IntelMicroSignalArchitecture(MSA).Blackfinprocessorscombineadual-MACstate-of-the-artsignalprocessingengine,theadvantagesofaclean,orthogonalRISC-likemicroprocessorinstructionset,andsingle-instruction,multiple-data(SIMD)multimediacapabilitiesintoasingleinstruction-setarchitecture.

Theprocessoroffersperformanceupto500MHz,aswellaslowstaticpowerconsumption.Producedwithalow-powerandlowvoltagedesignmethodology,theyprovideworld-classpowermanagementandperformance.

Byintegratingarichsetofindustry-leadingsystemperipheralsandmemory,Blackfinprocessorsaretheplatformofchoicefornext-generationapplicationsthatrequireRISC-likeprogrammability,multimediasupport,andleadingedgesignalprocessinginoneintegratedpackage.Theseapplicationsspanawidearrayofmarkets,fromautomotivesystemstoembeddedindustrial,instrumentationandpower/motorcontrolapplications.

ADSP-BF609主要特性:

Dual-coresymmetrichigh-performanceBlackfinprocessor,upto500MHzpercoreEachcorecontainstwo16-bitMACs,two40-bitALUs,anda40-bitbarrelshifter

RISC-likeregisterandinstructionmodelforeaseofprogrammingandcompiler-friendlysupport

Advanceddebug,trace,andperformancemonitoring

PipelinedVisionProcessorprovideshardwaretoprocesssignalandimagealgorithmsusedforpre-andco-processingofvideoframesinADASorothervideoprocessingapplications

AcceptsarangeofsupplyvoltagesforI/Ooperation.

Off-chipvoltageregulatorinterface349-ball(19mm×19mm)RoHScompliantBGApackage

MEMORY

Eachcorecontains148KbytesofL1SRAMmemory(processorcore-accessible)withmulti-paritybitprotection

Upto256KbytesofL2SRAMmemorywithECCprotection

Dynamicmemorycontrollerprovides16-bitinterfacetoasinglebankofDDR2orLPDDRDRAMdevices

Staticmemorycontrollerwithasynchronousmemoryinterfacethatsupports8-bitand16-bitmemories

Flexiblebootingoptionsfromflash,eMMCandSPImemoriesandfromSPI,linkportandUARThosts

Memorymanagementunitprovidesmemoryprotection

圖1.ADSP-BF609處理器方框圖

BLACKFIN處理器核

TheprocessorintegratestwoBlackfinprocessorcores.Eachcorecontainstwo16-bitmultipliers,two40-bitaccumulators,two40-bitALUs,fourvideoALUs,anda40-bitshifter.Thecomputationunitsprocess8-,16-,or32-bitdatafromtheregisterfile.

Thecomputeregisterfilecontainseight32-bitregisters.Whenperformingcomputeoperationson16-bitoperanddata,theregisterfileoperatesas16independent16-bitregisters.Alloperandsforcomputeoperationscomefromthemultiportedregisterfileandinstructionconstantfields.

EachMACcanperforma16-bitby16-bitmultiplyineachcycle,accumulatingtheresultsintothe40-bitaccumulators.Signedandunsignedformats,rounding,andsaturationaresupported.

TheALUsperformatraditionalsetofarithmeticandlogicaloperationson16-bitor32-bitdata.Inaddition,manyspecialinstructionsareincludedtoacceleratevarioussignalprocessingtasks.Theseincludebitoperationssuchasfieldextractandpopulationcount,modulo232multiply,divideprimitives,saturationandrounding,andsign/exponentdetection.Thesetofvideoinstructionsincludebytealignmentandpackingoperations,16-bitand8-bitaddswithclipping,8-bitaverageoperations,and8-bitsubtract/absolutevalue/accumulate(SAA)operations.

Alsoprovidedarethecompare/selectandvectorsearchinstructions.Forcertaininstructions,two16-bitALUoperationscanbeperformedsimultaneouslyonregisterpairs(a16-bithighhalfand16-bitlowhalfofacomputeregister).IfthesecondALUisused,quad16-bitoperationsarepossible.

The40-bitshiftercanperformshiftsandrotatesandisusedtosupportnormalization,fieldextract,andfielddepositinstructions.

Theprogramsequencercontrolstheflowofinstructionexecution,includinginstructionalignmentanddecoding.Forprogramflowcontrol,thesequencersupportsPCrelativeandindirectconditionaljumps(withstaticbranchprediction),andsubroutinecalls.Hardwaresupportszero-overheadlooping.

Thearchitectureisfullyinterlocked,meaningthattheprogrammerneednotmanagethepipelinewhenexecutinginstructionswithdatadependencies.

Theaddressarithmeticunitprovidestwoaddressesforsimultaneousdualfetchesfrommemory.Itcontainsamultiportedregisterfileconsistingoffoursetsof32-bitindex,modify,length,andbaseregisters(forcircularbuffering),andeightadditional32-bitpointerregisters(forC-styleindexedstackmanipulation).

BlackfinprocessorssupportamodifiedHarvardarchitectureincombinationwithahierarchicalmemorystructure.Level1(L1)memoriesarethosethattypicallyoperateatthefullprocessorspeedwithlittleornolatency.AttheL1level,theinstructionmemoryholdsinstructionsonly.Thedatamemoryholdsdata,andadedicatedscratchpaddatamemorystoresstackandlocalvariableinformation.

Inaddition,multipleL1memoryblocksareprovided,offeringaconfigurablemixofSRAMandcache.Thememorymanagementunit(MMU)providesmemoryprotectionforindividualtasksthatmaybeoperatingonthecoreandcanprotectsystemregistersfromunintendedaccess.

Thearchitectureprovidesthreemodesofoperation:usermode,supervisormode,andemulationmode.Usermodehasrestrictedaccesstocertainsystemresources,thusprovidingaprotectedsoftwareenvironment,whilesupervisormodehasunrestrictedaccesstothesystemandcoreresources.

圖2.Blackfin處理器核框圖

ADSP-BF609EZ-KITLite?評估系統(tǒng)

TheADSP-BF609processorisamemberoftheBlackfinfamilyofproducts,incorporatingtheAnalogDevices/IntelMicroSignalArchitecture(MSA).Blackfinprocessorscombineadual-MACstate-of-the-artsignalprocessingengine,theadvantagesofaclean,orthogonalRISC-likemicroprocessorinstructionset,andsingle-instruction,multiple-data(SIMD)multimediacapabilitiesintoasingleinstruction-setarchitecture.

ADSP-BF60xBlackfinprocessorsembodyanewtypeofembeddedprocessordesignedspecificallytomeetthecomputationaldemandsandpowerconstraintsoftoday’sautomotivesystems,embeddedindustrial,instrumentation,andpower/motorcontrolapplications.

TheevaluationboardisdesignedtobeusedinconjunctionwiththeCrossCore?EmbeddedStudio(CCES)developmenttoolstotestcapabilitiesoftheADSP-BF60xBlackfinprocessors.TheCCESdevelopmentenvironmentaidsadvancedapplicationcodedevelopmentanddebug,suchas:

?Create,compile,assemble,andlinkapplicationprogramswritteninC++,C,andassembly

?Load,run,step,halt,andsetbreakpointsinapplicationprograms

?Readandwritedataandprogrammemory

?Readandwritecoreandperipheralregisters

?Plotmemory

Accesstotheprocessorfromapersonalcomputer(PC)isachievedthroughaUSBport(whenadebugagentismountedontheEZ-KITLiteboard)oranexternalJTAGemulator.TheUSBinterfaceprovidesunrestrictedaccesstotheADSP-BF609processorandevaluationboardperipherals.AnalogDevicesJTAGemulatorsofferfastercommunicationbetweenthehostPCandtargethardware.AnalogDevicescarriesawiderangeofin-circuitemulationproducts.

圖3.ADSP-BF609EZ-KITLite?評估板外形圖

ADSP-BF609EZ-KITLite?評估板主要特性:

?AnalogDevicesADSP-BF609Blackfinprocessor

?349-pinLFBGApackage

?25MHzCLKINoscillator

?48MHzUSBCLKIN

?DoubleDataRateSynchronousDynamicRandom-AccessMemory(DDR2SDRAM)

?MicronMT47H64M16HR-3

?64Mx16bit(1Gb)

?Burstflashmemory

?MicronPC28F128P33T85B

?16Mx16-bit(32MB)flashmemory

?QuadSerialPeripheralInterface(SPI)

?WinbondW25Q32

?32Mbserialflashmemory

?EthernetPHY

?NationalSemiconductor

?DP83848C10/100PHY

?TwoLEDsintegratedintotheRJ-45connector:link/activity

?UniversalAsynchronousReceiver/Transmitter(UART)

?ADM3315RS-232linedriver/receiver

?DB9femaleconnector

?Tempsensor

?OnSemiconductor

?ADM1032two-wiresensor

?ControllerAreaNetwork(CAN)

?NXPTJA1041

?RJ-11connector

?Debuginterface

?JTAGheaderforusewithADIemulators

?Standalonedebugagent

?LEDs

?EightLEDs:onepower(green),oneboardreset(red),onetemperaturelimit(amber),Ethernetspeed(green),andfourgeneral-purpose(amber)

?Pushbuttons

?Fourpushbuttons:onereset,onewake,andtwoIRQ/flag

?ExpansionInterface3(EI3)

?Nextgenerationoftheexpansioninterfacedesign,providesaccesstomostoftheprocessorsignals

?Powersupply

?CEapproved

?5V@3.6Amps

?Otherfeatures

?Linkportconnectors

?SD/MMCmemoryconnector

?Rotaryencoder

?MPJTAGinandoutconnectors

?0.05-ohmresistorsforprocessorcurrentmeasurem