《驱动讲义hxy》PPT课件

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1、RK27驱动软件内容提要Q&A驱动模块简介芯片资源与架构驱动接口说明www.rockchips.com内容提要芯片资源与架构www.rockchips.comRK27XX系列资源列表(1)www.rockchips.comRK27XX系列资源列表(2)www.rockchips.comRK27XX芯片架构www.rockchips.com系统特性SystemOperationDualCoreArchitecture(ARM7EJC+DSP)SupportsystembootsequentiallyfromARM7EJCt

2、oDSPSelectableJTAGdebugmethodARM7EJCdebugonlyDSPdebugonlyARM7EJC+DSPdualcoredebugSelectablebootingmethodBootfromNORFlashBootfromEmbeddedROMInternalmemoryspaceDSPIMEM32KwordsDSPDMEM32KwordsARM7EJCEmbeddedSyncSRAM4KbytesARM7EJCEmbeddedBootROM8Kbyteswww.rockchips.co

3、m内容提要驱动模块简介www.rockchips.comLCDControllerLCDCUnitisacontrollerinterfacetoLCDpanel,includinga2048X32bitSRAM.KeyfeaturesCompatibleMCUandRGBinterface。Compatible8bitsseriesand24bitsparallelRGBinterface.SupportdeltaRGBinterfacepanel.SupportYUVorRGBimagesourcedatainput

4、relativelyinline.Support8gradealphaoperations.Supporteven/oddfieldmode.Support4:2:2or4:2:0YUVsourcedatainput.Support16bitsor24bitsRGBsourcedatainput.SupportscalebaseonYUVsource.SupportMCUbufferwriteandbypassmode.www.rockchips.comDMA系统中有3个独立的DMA模块A2ADMA---用于总线间数据传

5、输HDMA---用于音频数据传输DWDMA---用于视频和LCD数据传输www.rockchips.comA2ADMAIntegratedbetweenAHBBUS0andAHBBUS1ProvideAHB-to-AHBbusprotocoltranslationSupportAHB-to-AHBDMAorSingleAHBDMATwoDMAChannelssupportOn-the-flymodebetweentwolevelbussupport4hardwarerequesthandshakingsupportSup

6、porthardwareandsoftwaretriggerDMAtransfermodewww.rockchips.comHDMADWDMAIntegratedinAHBBUS1FourDMAChannelssupport8hardwarerequesthandshakingsupportSupporthardwareandsoftwaretriggerDMAtransfermodeBuild-in4dataFIFO:64bytes/64bytes/64bytes/64bytesScatter/Gathertransf

7、ersupportLLPtransfersupportTwomasterforon-the-flysupportwww.rockchips.comDWDMAIntegratedinAHBBUS1FourDMAChannelssupport8hardwarerequesthandshakingsupportSupporthardwareandsoftwaretriggerDMAtransfermodeBuild-in4dataFIFO:64bytes/64bytes/64bytes/64bytesScatter/Gathe

8、rtransfersupportLLPtransfersupportTwomasterforon-the-flysupportwww.rockchips.comDMA硬件请求www.rockchips.comInterrupt优先级（ARM）www.rockchips.comInterrupt优先级（DSP）www.