UHPI_HCSUHPI_HAS(D)UHPI_HCNTL[1:0]UHPI_HR/WUHPI_HHWILUHPI_HSTROBEUHPI_HD[15:0](output)UHPI_HRDY121212563431212128141514871st Half-Word2nd Half-Word61315(A)(C)(B)
196TMS320C6745,TMS320C6747SPRS377F–SEPTEMBER2008–REVISEDJUNE2014
SubmitDocumentationFeedbackProductFolderLinks:TMS320C6745TMS320C6747PeripheralInformationandElectricalSpecificationsCopyright©2008–2014,TexasInstrumentsIncorporatedA.UHPI_HSTROBEreferstothefollowinglogicaloperationonUHPI_HCS,UHPI_HDS1,andUHPI_HDS2:[NOT(UHPI_HDS1XORUHPI_HDS2)]ORUHPI_HCS.B.Dependingonthetypeofwriteorreadoperation(HPIDwithoutauto-incrementing;HPIA,HPIC,orHPIDwithauto-incrementing)andthestateoftheFIFO,transitionsonUHPI_HRDYmayormaynotoccur.C.UHPI_HCSreflectstypicalUHPI_HCSbehaviorwhenUHPI_HSTROBEassertioniscausedbyUHPI_HDS1orUHPI_HDS2.UHPI_HCStimingrequirementsarereflectedbyparametersforUHPI_HSTROBE.D.ThediagramaboveassumesUHPI_HAShasbeenpulledhigh.Figure6-67.UHPIReadTiming(UHPI_HASNotUsed,TiedHigh)
214TMS320C6745,TMS320C6747SPRS377F–SEPTEMBER2008–REVISEDJUNE2014
SubmitDocumentationFeedbackProductFolderLinks:TMS320C6745TMS320C6747DeviceandDocumentationSupportCopyright©2008–2014,TexasInstrumentsIncorporated7DeviceandDocumentationSupport7.1DeviceSupport7.1.1DevelopmentSupportTIoffersanextensivelineofdevelopmenttoolsfortheTMS320C6745/47platform,includingtoolstoevaluatetheperformanceoftheprocessors,generatecode,developalgorithmimplementations,andfullyintegrateanddebugsoftwareandhardwaremodules.Thetool'ssupportdocumentationiselectronicallyavailablewithintheCodeComposerStudio™IntegratedDevelopmentEnvironment(IDE).ThefollowingproductssupportdevelopmentofTMS320C6745/47applications:SoftwareDevelopmentTools:CodeComposerStudio™IntegratedDevelopmentEnvironment(IDE):includingEditorC/C++/AssemblyCodeGeneration,andDebugplusadditionaldevelopmenttoolsScalable,Real-TimeFoundationSoftware(DSP/BIOS™),whichprovidesthebasicrun-timetargetsoftwareneededtosupportanyapplication.HardwareDevelopmentTools:ExtendedDevelopmentSystem(XDS™)EmulatorForacompletelistingofdevelopment-supporttoolsforTMS320C6745/47,uniformresourcelocator(URL).Forinformationonpricingandavailability,contactthenearestTIfieldsalesofficeorauthorizeddistributor.7.1.2DeviceandDevelopment-SupportToolNomenclatureTodesignatethestagesintheproductdevelopmentcycle,TIassignsprefixestothepartnumbersofallDSPdevicesandsupporttools.EachDSPcommercialfamilymemberhasoneofthreeprefixes:TMX,TMP,orTMS(e.g.,TMS320C6745).TexasInstrumentsrecommendstwoofthreepossibleprefixdesignatorsforitssupporttools:TMDXandTMDS.Theseprefixesrepresentevolutionarystagesofproductdevelopmentfromengineeringprototypes(TMX/TMDX)throughfullyqualifiedproductiondevices/tools(TMS/TMDS).Devicedevelopmentevolutionaryflow:TMXExperimentaldevicethatisnotnecessarilyrepresentativeofthefinaldevice'selectricalspecifications.TMPFinalsilicondiethatconformstothedevice'selectricalspecificationsbuthasnotcompletedqualityandreliabilityverification.TMSFully-qualifiedproductiondevice.Supporttooldevelopmentevolutionaryflow:TMDXDevelopment-supportproductthathasnotyetcompletedTexasInstrumentsinternalqualificationtesting.TMDSFullyqualifieddevelopment-supportproduct.TMXandTMPdevicesandTMDXdevelopment-supporttoolsareshippedagainstthefollowingdisclaimer:"Developmentalproductisintendedforinternalevaluationpurposes."TMSdevicesandTMDSdevelopment-supporttoolshavebeencharacterizedfully,andthequalityandreliabilityofthedevicehavebeendemonstratedfully.TI'sstandardwarrantyapplies.
HD-SDI 芯片方案选择应用
视频监控在经历模拟时代、数字时代、网络时代的发展后，现在已经逐步
走入了高清与智能时代。与传统标清视频相比，高清在视频质量上有了质的飞
跃，但就目前而言，要实现监控系统高清呈现，也并非一蹴而就之易事。从视
频监控系统中模拟到数字的转化中，从 CIF 到 D1 是一个重要的阶跃，从效果来
看数字化视频影像也可与模拟视频影像相当，即使达到标准清晰度(即标清)，其
存储和传输的增加几乎是翻两番。若要达到高级清晰度 (即高清)，其分辨率从
720P 到 1080P@30fps 或 1080P@60fps，则需要付出很大的投入和代价，因此需
要特别关注数字视频编解码芯片技术的演变和实际应用。但是，即使前进道路
再坎坷，却阻挡不了芯片厂商在高清编解码征程上的捷步迈进。当前，除了海
思的 Hi3520 可实现 1080P 高清编解码外，TI 的 TMS320DM6467、富瀚微的
FH8735 和 FH8736 以及升迈的 GM8180 等芯片都已杀进了高清名人堂。
目前，市场上主流产品仍然是标清，标清和高清将来仍会长时间共存。
Techwell 着手从两方面进行了标清芯片升级：一方面清晰度升级，即将清晰度
从 D1 升级到支持 960H 格式，如 TW2809 成功地从 D1 升级到支持 960H，如以
前端 TV 解码芯片 TW2960+TW2809 系统方案为例，即给用户带来了模拟高清
的享受;另一方面是集成前端 TV 解码器，即将前端的 TV 解码器嵌入到现有的
编解码芯片中，如在推出的 TW5866 在 TW5864 的基础上，包含了 8 路 TV 解
码器，既增加了系统的稳定性又降低了产品的价格。而另外一些芯片厂商在平
台的继承性上给予深入重视，并注重全面挖掘原有芯片的潜力。以 TI 为例，在
IP 网络摄像机的应用中，其 DM365 虽说目前已经广泛普及，但仍改芯片为
Peripheral
ConfigurationBusNoiseFilter
NoiseFilterClock PrescalerI2CPSCxPrescalerRegister
Bit Clock Generator
I2CCLKHxClock DivideHigh Register
I2CCLKLxClock DivideLow RegisterControl
I2CCOARxOwnAddressRegister
I2CSARxSlaveAddressRegister
I2CCMDRxMode Register
I2CEMDRxExtended ModeRegister
I2CCNTxData CountRegister
I2CPID1Peripheral IDRegister 1
I2CPID2Peripheral IDRegister 2Transmit
I2CXSRxTransmit ShiftRegister
I2CDXRxTransmit Buffer
Receive
I2CDRRxReceive Buffer
I2CRSRxReceive ShiftRegisterI2Cx_SCL
I2Cx_SDAInterrupt/DMAI2CIERxInterrupt EnableRegister
I2CSTRxInterrupt StatusRegister
I2CSRCxInterrupt SourceRegister
ControlI2CPFUNCPin FunctionRegister
I2CPDIRPin DirectionRegister
I2CPDINPin Data InRegisterI2CPDOUTPin Data OutRegister
I2CPDSETPin Data SetRegister
I2CPDCLRPin Data ClearRegisterInterrupt DMARequests
177TMS320C6745,TMS320C6747
