简介:DesignofIREDMSystemwithaDSPPhaseDetector①LIUJianguo,WEIQingnong(AnhuiInstituteofOpticsandFineMechanics,ChineseAcademyofScienc...
简介:OnthebasisoftheactualDSPsystemdevelopment,illustratedisthedesignoftheconnectionbetweenDSPandFlash,compiledaretheintegrityproceduresofFlasherasureandprogramming.Besides,designedistheconnectionbetweenfull-duplexEthernetcontrollerRTL8019ASwiththeexternalmemoryinterfaceofDSP.Furthermore,thestepsofflashonlineprogrammingthroughEthernetaredescribedindetail.Theremoteupgradeandupholdarerealizedbythedesign.
简介:Theprocessingspeedofthecommunicationbetweennodesinaparallelprocessorhasbecomethemajorbottleneckoftheprocessor'sperformance.RDMA(RemoteDirectMemoryAccess)technologyhasdrawnmoreattentionrecentlyduetoitscapabilityoftransferringalargeramountofdata,higherspeedandreliability.4DSP(4DigitalSignalProcessing)modulecomprisedofTiger-SHARC201chipisconnectedbyLVDS(LowVoltageDifferentialSignal)circuits.ThispaperproposesageneralandreconfigurableRDMAplatformanditscorrespondingcommunicationprotocolwithalltherouteslinkedbasedonthezerocopy.TheprotocoltransfersmessageofDSPbyinterruptingofDMAandisappliedonmassiveremoteimageimpression,whichreducesmemoryneedsandworkingburdenofCPU.Theexperimentresultsshowthisplatformisefficient,flexible,andexpandableofbeingintegratedtoalargerscaleinthenextdevelopmentstages.
简介:Aninfraredreal-timeimagingsystemusingDSP(digitalsignalprocessor)asthekernelofdigitalsignalprocessingboardispresented.Inthissystem,theimagingdifferenceandnonuniformitycorrectionmethodisdevelopedonthechiptakingadvantageofDSPwithhighspeed.Themethodcombineshardwareandsoftwaretogether,sothatthedifficultyforrealizingsuchamethodwithotherhardwarecanbeovercome.
简介:BasedonthestructureandbootloaderprincipleofDSPsystem,amethodfortheremoteupdation,debuggingandself-loadingofDSPsystemisdevelopedbyEthernet.HardwarecircuitandDM9000drivenprogramarepresentedandTCP/IPprotocolisembeddedintoDSP.Throughthere-mappingofexternalmemoryaddress,itiseasytoimplementtheloadofprogramsectionselectivelyandDSPself-boot.Theexperimentalresultsshowthattheproblemofhighcostinsystemmaintenancebyconventionalfielddebuggingbyemulatorandthelimitationinchip-levelbootareresolved.
简介:PresentedisaschemeofanembeddedvideoremotemonitoringsystembasedonTMS320DM642.UsingDM642asthedataprocessingcore,theremotemonitoringsystemiscomposedofvideoacquisitionmodule,videoprocessingmoduleandcommunicationmodule,whichgivesanimplementationofclass/minidrivermoduleinDSP/BIOSintegrateddevelopingenvironmentandalsoacommontaskmoduleinapplicationlayerisachieved.Thesystemrealizestheentirefunctionsoftheanalogvideosignalacquisition,H.264videocodingandInternettransmission.Itprovidesthegeneralconnectionforthefuturedevelopmentandhasgoodflexibilityandextendibility.Thesystemusesamodulardesignandoveralldevelopmentofprogrammingmethodstoimprovetheefficiencyofsystemdevelopment.
简介:TLC320AD50C作为一款语音处理芯片有着广泛的应用。文章介绍了TMS320VC5402的多通道缓冲串口(McBSPs)与音频芯片TLC320AD50C的硬件连接的设计与实现。介绍了TMS320VC5402的多通道缓;中串口和音频芯片TLC320AD50C的工作原理和初始化的方法,以及典型应用中的TMS320VC5402对TLC320AD50C控制方式和TLC320AD50C采样频率的设定。最后给出了该系统的初始化程序,并实现了在硬件系统上的运行。