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Texas Instruments TVP5147M1PFP manual Functional Description, Analog Processing and A/D Converters

Models: TVP5147M1PFP

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2 Functional Description

Functional Description

2 Functional Description

2.1Analog Processing and A/D Converters

Figure 2−1 shows a functional diagram of the analog processors and A/D converters, which provide the analog interface to all video inputs. It accepts up to 10 inputs and performs source selection, video clamping, video amplification, A/D conversion, and gain and offset adjustments to center the digitized video signal. The TVP5147M1 supports one analog video output for the selected analog input video.

I/O

VI_1_A


CVBS/				M


	VI_1_B			U
Pb/C	VI_1_B			U
Pb/C				X
	VI_1_C			X
	VI_1_C

CVBS/	VI_2_A		M


	VI_2_B		U
Y
			X
	VI_2_C

CVBS/	VI_3_A		M


	VI_3_B		U
Pr/C
			X
	VI_3_C

	M
PGA	U
	X
	Analog Front End
Clamp	PGA	11-Bit
	PGA	ADC
		ADC
Clamp	PGA	11-Bit
	PGA	ADC
		ADC
Clamp

CH1 A/D

CH2 A/D

Line-Locked Sampling Clock

CVBS/

Y

VI_4_A

Clamp

Figure 2−1. Analog Processors and A/D Converters

2.1.1 Video Input Switch Control

The TVP5147M1 decoder has two analog channels that accept up to 10 video inputs. The user can configure the internal analog video switches via the I2C interface. The 10 analog video inputs can be used for different input configurations, some of which are:

SLES140A—March 2007

TVP5147M1PFP

9

Image 17

Texas Instruments TVP5147M1PFP Functional Description, Analog Processing and A/D Converters, Video Input Switch Control

Contents

SLES140A Digital Audio VideoData Manual MarchApplications IMPORTANT NOTICEProducts Introduction ContentsJuly Contents 3 Electrical SpecificationsApplication Information Example Register SettingsPage List of IllustrationsTitle Page List of TablesTitle 1 Introduction 1.1 Detailed Functionality 1.4 Ordering Information 1.2 TVP5147M1 Applications1.3 Related Products Figure 1−1. Functional Block Diagram 1.5 Functional Block Diagram1.6 Terminal Assignments Figure 1−2. Terminal Assignments DiagramTable 1−1. Terminal Functions 1.7 Terminal FunctionsPower Supplies Table 1−1. Terminal Functions ContinuedSLES140A-March IntroductionTVP5147M1PFP 2 Functional Description 2.1.1 Video Input Switch Control2.1 Analog Processing and A/D Converters Figure 2−1. Analog Processors and A/D Converters2.1.3 Automatic Gain Control 2.1.2 Analog Input Clamping2.1.4 Analog Video Output 2.1.5 A/D Converters2.2 Digital Video Processing Figure 2−2. Digital Video Processing Block Diagram2.2.1 2⋅ Decimation Filter 2.2.2 Composite Processor2.2.2.1 Color Low-Pass Filter Figure 2−3. Composite and S-Video Processing Block Diagram2.2.2.2 Y/C Separation Characteristics, NTSC/PAL ITU-R BT.601 SamplingFigure 2−4. Color Low-Pass Filter Frequency Response Figure 2−5. Color Low-Pass Filter With Filter2.2.3 Luminance Processing Figure 2−8. Luminance Edge-Enhancer Peaking Block Diagram2.2.4 Color Transient Improvement Figure 2−9. Peaking Filter Response NTSC/PAL ITU-R BT.601 Sampling2.3 Clock Circuits Figure 2−10. Reference Clock Configurations2.4 Real-Time Control RTC 2.5 Output FormatterTable 2−1. Output Format 2.5.1 Separate SyncsNOTE Line numbering conforms to ITU-R BT.470 Figure 2−12. Vertical Synchronization Signals for 525-Line SystemFunctional Description Figure 2−13. Vertical Synchronization Signals for 625-Line SystemNOTE ITU-R BT.656 10-bit 422 timing with 2⋅ pixel clock reference Figure 2−14. Horizontal Synchronization Signals for 10-Bit 422 ModeNTSC Figure 2−15. Horizontal Synchronization Signals for 20-Bit 422 Mode 2.6 I2C Host Interface 2.5.2 Embedded SyncsFigure 2−16. VSYNC Position With Respect to HSYNC Table 2−3. EAV and SAV Sequence2.6.3 VBUS Access 2.6.1 Reset and I2C Bus Address Selection2.6.2 I2C Operation Table 2−4. I 2C Host Interface Terminal DescriptionNOTE Examples use default I2C address Figure 2−17. VBUS AccessACK = Acknowledge generated by the slave NAK = No acknowledge generated by the masterTable 2−6. Supported VBI System 2.7 VBI Data ProcessorTable 2−7. Ancillary Data Format and Sequence 2.7.1 VBI FIFO and Ancillary Data in Video StreamTable 2−9. Reset Sequence 2.8 Reset and InitializationFigure 2−18. Reset Timing 2.7.2 VBI Raw Data OutputTable 2−10. I 2C Register Summary 2.9 Adjusting External Syncs2.10 Internal Control Registers Table 2−10. I 2C Register Summary Continued 7Ah−7Eh Table 2−10. I 2C Register Summary Continued84h−96h 98h−99hE3h−E7h Table 2−11. VBUS Register SummaryTable 2−10. I 2C Register Summary Continued Table 2−12. Analog Channel and Video Mode Selection 2.11 Register Definitions2.11.1 Input Select Register 2.11.3 Video Standard Register 2.11.2 AFE Gain Control RegisterCVBS and S-Video Component Video2.11.4 Operation Mode Register 2.11.5 Autoswitch Mask Register2.11.7 Luminance Processing Control 1 Register 2.11.6 Color Killer Register2.11.9 Luminance Processing Control 3 Register 2.11.8 Luminance Processing Control 2 RegisterLuminance Brightness Register 2.11.102.11.12 Chrominance Saturation Register 2.11.11 Luminance Contrast Register2.11.13 Chroma Hue Register 2.11.14 Chrominance Processing Control 1 Register2.11.16 AVID Start Pixel Register 2.11.15 Chrominance Processing Control 2 Register2.11.18 HSYNC Start Pixel Register 2.11.17 AVID Stop Pixel Register2.11.19 HSYNC Stop Pixel Register 2.11.20 VSYNC Start Line Register2.11.21 VSYNC Stop Line Register CTI Delay Register2.11.22 VBLK Start Line Register 2.11.23 VBLK Stop Line RegisterSync Control Register CTI Control Register2.11.25 2.11.262.11.28 Output Formatter 2 Register 2.11.27 Output Formatter 1 Register2.11.29 Output Formatter 3 Register 2.11.30 Output Formatter 4 Register 2.11.31 Output Formatter 5 Register 2.11.33 Clear Lost Lock Detect Register 2.11.32 Output Formatter 6 Register2.11.34 Status 1 Register 2.11.36 AGC Gain Status Register 2.11.35 Status 2 RegisterSignal present Weak signal detection2.11.38 GPIO Input 1 Register 2.11.37 Video Standard Status RegisterAutoswitch Video standardAVID 2.11.39 GPIO Input 2 Register2.11.41 AFE Coarse Gain for CH 2 Register 2.11.40 AFE Coarse Gain for CH 1 Register2.11.43 AFE Coarse Gain for CH 4 Register 2.11.42 AFE Coarse Gain for CH 3 Register2.11.46 AFE Fine Gain for Pr Register 2.11.44 AFE Fine Gain for Pb Register2.11.45 AFE Fine Gain for YChroma Register 656 version 2.11.47 AFE Fine Gain for CVBSLuma Register2.11.48 Field ID Control Register 2.11.49 F-bit and V-bit Control 1 Register 2.11.52 ROM Version Register 2.11.50 Back-End AGC Control Register2.11.51 AGC Decrement Speed Control Register 2.11.53 AGC White Peak Processing Register F and 2.11.54 F and V Bit Control RegisterLines per frame F bit2.11.55 VCR Trick Mode Control Register 2.11.58 AGC Increment Delay Register2.11.56 Horizontal Shake Increment Register 2.11.57 AGC Increment Speed Register2.11.60 Chip ID MSB Register 2.11.59 Analog Output Control 1 Register2.11.61 Chip ID LSB Register 2.11.62 CPLL Speed Control RegisterStatus Request Register 2.11.65 AGC Decrement Delay Register2.11.64 Vertical Line Count Register 2.11.632.11.66 VDP TTX Filter And Mask Registers 2.11.67 VDP TTX Filter Control Register Figure 2−19. Teletext Filter Function 2.11.68 VDP FIFO Word Count Register2.11.69 VDP FIFO Interrupt Threshold Register 2.11.70 VDP FIFO Reset Register2.11.71 VDP FIFO Output Control Register 2.11.72 VDP Line Number Interrupt Register2.11.74 VDP Line Start Register 2.11.73 VDP Pixel Alignment Register2.11.75 VDP Line Stop Register 2.11.76 VDP Global Line Mode Register2.11.79 VBUS Data Access With No VBUS Address Increment Register 2.11.77 VDP Full Field Enable Register2.11.80 VBUS Data Access With VBUS Address Increment Register 2.11.78 VDP Full Field Mode Register2.11.81 FIFO Read Data Register 2.11.82 VBUS Address Access Register2.11.83 Interrupt Raw Status 0 Register FIFO THRS2.11.85 Interrupt Status 0 Register 2.11.84 Interrupt Raw Status 1 RegisterMacrovision status changed Standard changed2.11.86 Interrupt Status 1 Register 2.11.87 Interrupt Mask 0 Register 2.11.89 Interrupt Clear 0 Register 2.11.88 Interrupt Mask 1 Register2.11.90 Interrupt Clear 1 Register 2.12.2 VDP WSS Data Register 2.12 VBUS Register Definitions2.12.1 VDP Closed Caption Data Register 2.12.4 VDP V-Chip TV Rating Block 1 Register 2.12.3 VDP VITC Data Register2.12.5 VDP V-Chip TV Rating Block 2 Register 80 0530h2.12.7 VDP V-CHIP MPAA Rating Data Register 2.12.6 VDP V-Chip TV Rating Block 3 RegisterTV-G TV-Y72.12.8 VDP General Line Mode and Line Address Register Gemstar Read only 2.12.9 VDP VPS/Gemstar Data RegisterVPS Read only 2.12.11 Interrupt Configuration Register2.12.10 Analog Output Control 2 Register 3.2.1 Crystal Specifications Electrical Specifications3.1 Absolute Maximum Ratings† 3.2 Recommended Operating Conditions3.3.1 DC Electrical Characteristics see Note 3.3 Electrical Characteristics3.3.2 Analog Processing and A/D Converters 3.3.2.1 Fs = 30 MSPS for CH1, CH23.3.3.1 Clocks, Video Data, Sync Timing 3.3.3 Timing3.3.3.2 I2C Host Port Timing Figure 3−1. Clocks, Video Data, and Sync TimingSLES140A-March Electrical SpecificationsTVP5147M1PFP 4.1.2 Recommended Settings 4 Example Register Settings4.2.2 Recommended Settings 4.1 Example4.3.1 4.3.2 Recommended SettingsExample AssumptionsI2C register address 00h SLES140A-March Example Register SettingsTVP5147M1PFP Figure 5−1. Example Application Circuit 5 Application Information5.1 Application Example 5.2 Designing With PowerPADt Devices PACKAGING INFORMATION PACKAGE OPTION ADDENDUMPage