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Texas Instruments TMS320DM648 manual General-Purpose I/O Operation

Models: TMS320DM648

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SPRUEM1 – May 2007

General-Purpose I/O Operation

Signals not used for video display or video capture can be used as general-purpose input/output (GPIO) signals.

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5.1 GPIO Registers	151

150	General-Purpose I/O Operation	SPRUEM1 –May 2007
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Texas Instruments TMS320DM648 manual General-Purpose I/O Operation

Contents

Users Guide Submit Documentation Feedback Contents Raw Data Capture Mode BT.656 Image Display Video Display Registers Recommended Values Operational Details List of Figures Bit BT.656 Fifo Unpacking Video Display Event Register Vddispevt List of Tables Video Display Register Recommended Values About This Manual Notational ConventionsRelated Documentation From Texas Instruments Related Documentation From Texas Instruments Trademarks Overview Video Port Video Port Block Diagram Video Port Fifo Edma InterfaceVideo Capture Fifo Configurations BT.656 Video Capture Fifo ConfigurationYsrca Y/C Video Capture Fifo Configuration Video Display Fifo Configurations Bit Raw Video Capture Fifo ConfigurationBit Locked Raw Video Display Fifo Configuration 10. Y/C Video Display Fifo Configuration Video Port RegistersVideo Capture Signal Mapping1 Video Display Signal MappingVideo Port Pin Mapping Capture Mode BT.656 Raw Data Data Bus Bit Vdin Bus Usage for Capture ModesVdin Data Bus Usage for Capture Modes1 VideoPort Clocking Vdout Data Bus Usage for Display ModesVideo Port Pin Multiplexing Vdout Data Bus Usage for Display Modes1Video Port Peripheral Bus Reset Reset OperationPower-On Reset Software Port ResetCapture Channel Reset Display Channel ResetInterrupt Operation Edma Operation Capture Edma Event GenerationDisplay Edma Event Generation Edma Size and Threshold RestrictionsVideo Port Control Registers Edma Interface OperationVideo Port Control Registers Acronym Register NameVideo Port Control Register Vpctl Video Port Control Register Vpctl Field DescriptionsDescription Video Port Operating Mode Selection Operating ModeVideo Port Status Register Vpstat Video Port Status Register Vpstat Field DescriptionsVideo Port Interrupt Enable Register Vpie Dcna LfdaVideo Port Interrupt Status Register Vpis Lfda Sfda VINTA2 VINTA1 Serra Ccmpa CovraVideo Port Interrupt Status Register Vpis Field Descriptions None Clear VdctlShort field detected on channel a interrupt detected bit Covra BT.656 and Y/C Mode Field and Frame Operation Video Capture PortVideo Capture Mode Selection Video Capture Mode SelectionBT.656 Video Capture Mode 1 BT.656 Capture ChannelsError Correction by Protection Bits BT.656 Protection Bits3 BT.656 Image Window and Capture Video Capture ParametersCommon Video Source Parameters 4 BT.656 Data Sampling5 BT.656 Fifo Packing Video Source2 Y/C Timing Reference Codes Y/C Video Capture Mode1 Y/C Capture Channels 3 Y/C Image Window and CaptureBit Y/C Fifo Packing BT.656 and Y/C Mode Field and Frame Operation4 Y/C Fifo Packing VclkinaVC xCTL Bit BT.656 and Y/C Mode Capture OperationCapture Determination and Notification OperationVertical Synchronization Programming Vertical Counter Reset PointVertical Synchronization EAVVcount Operation Example EXC = VRST=0 VRST=1 FINV=0 FINV=1 VcountHorizontal Synchronization Programming Horizontal Counter Reset PointHorizontal Synchronization VCxCTL BitField Identification Field Identification ProgrammingField Detect Method Vclkin VSYNC# VCTL2 Short and Long Field DetectVideo Input Filtering HSYNC# VCTL1Chrominance Re-sampling Operation 10. Input Filter Mode SelectionInput Filter Modes Scaling OperationEdge Pixel Replication 2 Scaled Co-Sited FilteringAncillary Data Capture 11. Edge Pixel ReplicationVertical Ancillary Vanc Data Capture Raw Data Capture ModeHorizontal Ancillary Hanc Data Capture Raw Data Capture Notification11. Raw Data Mode Capture Operation Raw Data Fifo PackingFrmc TCI Capture Mode TCI Capture FeaturesTCI Data Capture TCI Capture Error Detection Synchronizing the System ClockPCR Vcactl Bit 12. TCI Capture Mode OperationTCI Data Capture Notification Clear FrmcWriting to the Fifo Reading from the FifoPerr Psterr Capturing Video in BT.656 or Y/C Mode Capture Line Boundary ConditionsHandling Fifo Overrun in BT.656 or Y/C Mode Capturing Video in Raw Data ModeHandling Fifo Overrun Condition in Raw Data Mode Capturing Data in TCI Capture ModeHandling Fifo Overrun Condition in TCI Capture Mode Video Capture Registers13. Video Capture Control Registers Video Capture Channel x Status Register VCASTAT, Vcbstat Fsync Frmc F2C F1C VcyposVcfld Vcxpos BT.656 or Y/C Mode Raw Data Mode TCI Mode Video Capture Channel a Control Register VcactlDescription Bit Rdfe Finv EXC Fldd Vrst Hrst Vcen None ResetRstch Blkcap Lfde Sfde ResmplV1EAV Eavsav ExternEavfid FDL V0EAVValue BT.656 or Y/C Mode Raw Data Mode TCI Mode Video Capture Channel x Field 1 Start Register VCxSTRT1Video Capture Channel x Field 1 Stop Register VCxSTOP1 Video Capture Channel x Field 2 Start Register VCxSTRT2 VcystopVcxstop Video Capture Channel x Field 2 Stop Register VCxSTOP2 26. Video Capture Channel x Field 2 Stop Register VCxSTOP2Video Capture Channel x Vertical Interrupt Register VCxVINT VCTHRLD2 VCTHRLD1CAPEVTCT2 Video Capture Channel x Event Count Register VCxEVTCTVideo Capture Channel B Control Register Vcbctl CAPEVTCT130. Video Capture Channel B Control Register Vcbctl Vrst Hrst VcenSAV or VCTL1 inactive edge Not used BT.656, Y/C Mode, or Raw Data Mode TCI Mode TCI Capture Control Register Tcictl24. TCI Capture Control Register Tcictl Field Descriptions TCI Clock Initialization LSB Register Tciclkinitl InpcrBit Value Mode TCI Clock Initialization MSB Register TciclkinitmTCI System Time Clock LSB Register Tcistclkl Pcre Pcrm Default PcrmTCI System Time Clock MSB Register Tcistclkm PcreTCI System Time Clock Compare LSB Register Tcistcmpl TCI System Time Clock Compare MSB Register TcistcmpmATC TCI System Time Clock Compare Mask MSB Register Tcistmskm Value BT.656, Y/C Mode, or Raw Data Mode TCI ModeTCI System Time Clock Compare Mask LSB Register Tcistmskl AtcmValue BT.656, Y/C Mode, or Raw Data Mode TCI M ode TCI System Time Clock Ticks Interrupt Register TciticksTickct 34. Video Capture Fifo Registers Capture Mode Register BT.656 or Y/C Raw DataVideo Capture Fifo Registers 35. Video Capture Fifo Registers FunctionDisplaying Video in BT.656 or Y/C Mode Video Display Field and Frame OperationVideo Display Registers Recommended Values Dmode Bits Mode Description Video Display Mode SelectionVideo Display Mode Selection Image TimingSmpte 296M Compatible Progressive Scan Display Interlaced Blanking Intervals and Video Areas Video Display Counters Progressive Blanking Intervals and Video AreaHorizontal Blanking and Horizontal Sync Timing External Sync Operation Sync Signal GenerationBT.656 Video Display Mode Port Sync OperationDisplay Timing Reference Codes Fpcount VclkoutLine Number BT.656 Frame TimingLine Number 525/60 Description4 BT.656 Fifo Unpacking Blanking Codes3 BT.656 Image Display Vclkout2 Y/C Blanking Codes Y/C Video Display Mode1 Y/C Display Timing Reference Codes 3 Y/C Image DisplayVideo Output Filtering Output Filter Mode Selection4 Y/C Fifo Unpacking Output Filter Modes15. Chrominance Re-sampling 2x Co-Sited Scaling2x Interspersed Scaling 18. Output Edge Pixel ReplicationHorizontal Ancillary Hanc Data Display Raw Data Display ModeAncillary Data Display Vertical Ancillary Vanc Data DisplayRaw Mode RGB Output Support Raw Data Fifo UnpackingDisplay Operation Video Display Field and Frame OperationDisplay Determination and Notification Vdctl BitVideo Display Event Generation Display Line Boundary ConditionsIpcount =IMGSIZE78 Display Timing ExamplesInterlaced BT.656 Timing Example YfifoVclkin Fpcount Ipcount VCTL1 Hblnkac VCTL1 Hsyncac Vclkout FlcountFrmwidth = IMGHOFF1 = 112 Interlaced Raw Display Example 26. BT.656 Interlaced Display Vertical Timing ExampleVclkin Fpcount Ipcount VCTL1 HblnkabVCTL1 Hsyncab Vclkout 28. Raw Interlaced Display Vertical Timing Example 3 Y/C Progressive Display Example VCTL1 Hblnkac VCTL1 Hsyncac Vclkout Frmwidth = IMGHOFF1 = Hblnkstart =Hsyncstart = 1350 Hsyncstop = 30. Y/C Progressive Display Vertical Timing Example Flcount EAV Ilcount V FDisplaying Video in BT.656 or Y/C Mode Displaying Video in Raw Data Mode Handling Under-run Condition of the Display Fifo Video Display Registers Video Display Status Register VdstatVideo Display Control Registers Video Display Control Register Vdctl Video Display Status Register Vdstat Field DescriptionsBT.656 and Y/C Mode Raw Data Mode Video Display Control Register Vdctl Field DescriptionsVideo Display Control Register Vdctl Field Descriptions None Frmdis Value BT.656 and Y/C Mode Raw Data ModeBlanking None FlddisFrmheight Video Display Frame Size Register VdfrmszVideo Display Horizontal Blanking Register Vdhblnk FrmwidthBT.656 and Y/C Mode Raw Data Mode 31-28 Reserved Field has no effectVBLNKYSTOP1 VBLNKXSTOP1VBLNKYSTART2 VBLNKXSTART2VBLNKYSTOP2 Value BT.656 and Y/C ModeDEFAULT0 VBLNKXSTOP2IMGHOFF1 Video Display Field 1 Image Offset Register VDIMGOFF1IMGVOFF1 None NegoffVideo Display Field 1 Image Size Register VDIMGSZ1 IMGVSIZE1IMGHSIZE1 Video Display Field 2 Image Offset Register VDIMGOFF2 IMGVOFF2IMGHOFF2 IMGVSIZE2 Video Display Field 2 Image Size Register VDIMGSZ2Video Display Field 1 Timing Register VDFLDT1 IMGHSIZE2FLD1XSTART Video Display Field 2 Timing Register VDFLDT2FLD1YSTART FLD2YSTARTIncpix Video Display Threshold Register VdthrldVDTHRLD2 VDTHRLD1Video Display Horizontal Synchronization Register Vdhsync HsyncstopHsyncstart VSYNCYSTOP1 VSYNCXSTART1VSYNCYSTART1 VSYNCXSTOP1VSYNCXSTART2 VSYNCYSTART2Crld Hrld Video Display Counter Reload Register VdreloadVrld CrldDISPEVT2 Video Display Event Register VddispevtVideo Display Clipping Register Vdclip DISPEVT1Video Display Default Display Value Register Vddefval ClipchighDefval Video Display Vertical Interrupt Register VdvintCrdefval Cbdefval CrdefvalVideo Display Field Bit Register Vdfbit 56. Video Display Vertical Interrupt Register VdvintVBITCLR1 FbitsetFbitclr VBITSET1VBITCLR2 VBITSET2Video Display Registers Recommended Values 34. Video Display Register Recommended ValuesRegister Field 525/60 Value 35. Video Display Fifo Registers Display ModeVideo Display Fifo Registers 36. Video Display Fifo Registers FunctionGeneral-Purpose I/O Operation Gpio Registers Video Port RegistersOffset Address Acronym Register Name Class Revision Video Port Peripheral Identification Register VppidType ClassPeren Video Port Peripheral Control Register PCRPeren Soft Free StopVideo Port Pin Function Register Pfunc Video Port Pin Function Register Pfunc Field DescriptionsNormal VDATA10TO19 Normal VDATA0TO9Video Port Pin Direction Register Pdir Video Port Pin Direction Register Pdir Field DescriptionsVDATA4TO7IN VDATA4TO7OUT VDATA12TO15IN VDATA12TO15OUTVDATA8TO9IN VDATA8TO9OUT VDATA0T32IN VDATA0T32OUTVideo Port Pin Data Input Register Pdin Video Port Pin Data Input Register Pdin Field DescriptionsPDOUT9 PDOUT8 PDOUT7 PDOUT6 PDOUT5 PDOUT4 PDOUT3 PDOUT2 Video Port Pin Data Output Register PdoutVideo Port Pin Data Out Register Pdout Field Descriptions PDOUT22When writing data, writes to PDOUT20 bit Video Port Pin Data Set Register Pdset Video Port Pin Data Set Register Pdset Field DescriptionsVideo Port Pin Data Clear Register Pdclr Video Port Pin Data Clear Register Pdclr Field DescriptionsVideo Port Pin Interrupt Enable Register Pien PIEN9 PIEN8 PIEN7 PIEN6 PIEN5 PIEN4 PIEN3 PIEN2PIEN22 Video Port Pin Interrupt Polarity Register Pipol Value DescriptionNone VCTL3INT Video Port Pin Interrupt Status Register PistatPISTAT22 None VCTL2INTVideo Port Pin Interrupt Clear Register Piclr PICLR9 PICLR8 PICLR7 PICLR6 PICLR5 PICLR4 PICLR3 PICLR2PICLR22 Vcxo Interpolated Control Port Overview VIC Port Interface SignalsVIC Port Signal Direction Description InterfaceOperational Details Example Values for Interpolation RateEnabling VIC Port VIC Port RegistersVIC Port Registers VIC Control Register Vicctl VIC Control Register Vicctl Field DescriptionsVIC Input Register Vicin VIC Input Register Vicin Field DescriptionsVicinbits VIC Clock Divider Register Vicdiv VIC Clock Divider Register Vicdiv Field DescriptionsVicclkdiv Products Applications DSPRfid