Texas Instruments TVP5154PNPRG4, TVP5154 Datasheet

www.ti.com

4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER

WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

1 Introduction

1.1 Features

• Four Separate Video Decoder Channels With

Features for Each Channel: – Accept NTSC (M, 4.43), PAL (B, D, G, H, I,

M, N), and SECAM (B, D, G, K, K1, L) Video

Data – Support ITU-R BT.601 Standard Sampling – High-Speed 9-Bit Analog-to-Digital

Converter (ADC) – Two Composite Inputs or One S-video Input

(for Each Channel) – Fully Differential CMOS Analog

Preprocessing Channels With Clamping

and Automatic Gain Control (AGC) for Best

Signal to Noise (SNR) Performance – Brightness, Contrast, Saturation, Hue, and

Sharpness Control Through Inter-Integrated

Circuit (I2C) – Complementary 4-Line (3-H Delay) Adaptive

Comb Filters for Both Cross-Luminance

and Cross-Chrominance Noise Reduction – Patented Architecture for Locking to Weak,

Noisy, or Unstable Signals

• Four Independent Polymorphic Scalers Management System (CGMS), Vertical

• Single or Concurrent Scaled and Unscaled

Outputs Via Dual Clocking Data, Interleaved 54-MHz Data or Single 27-MHz Clock

• Scaled/Unscaled Image Toggle Mode Gives

Variable Field Rate for Both Scaled and Unscaled Video

• Low Power Consumption: 700 mW Typical

• 128-Pin Thin Quad Flat Pack (TQFP) Package

• Single 14.31818-MHz Crystal for All Standards

and All Channels

• Internal Phase-Locked Loop (PLL) for

Line-Locked Clock (Separate for Each Channel) and Sampling

• Sub-Carrier Genlock Output for Synchronizing

Color Sub-Carrier of External Encoder

• Standard Programmable Video Output Format

– ITU-R BT.656, 8-Bit 4:2:2 With Embedded

Syncs

– 8-Bit 4:2:2 With Discrete Syncs

• Advanced Programmable Video Output

Formats – 2 × Over-Sampled Raw Vertical Blanking

Interval (VBI) Data During Active Video

– Sliced VBI Data During Horizontal Blanking

or Active Video

• VBI Modes Supported:

– Teletext (NABTS, WST) – Closed-Caption Decode With FIFO, and

Extended Data Services (EDS)

– Wide Screen Signaling (WSS), Video

Program System (VPS), Copy Generation Interval Time Code (VITC)

– Gemstar 1 × /2 × Electronic Program Guide

Compatible Mode

– Custom Configuration Mode Allows User to

Program the Slice Engine for Unique VBI Data Signals

• Improved Fast Lock Mode Can Be Used When

Input Video Standard Is Known and Signals on Switching Channels Are Clean

• Four Possible I2C Addresses Allowing 16

Decoder Channels on a Single I2C Bus

TVP5154

1.2 Applications

• The following is a partial list of suggested applications:

– Security Camera Systems – Large Format Video Wall Displays – Games Systems

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this document.

PowerPAD is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date. Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters.

www.ti.com

TVP5154 4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

1.3 Description

The TVP5154 device is a 4-channel, low-power, NTSC/PAL/SECAM video decoder. Available in a

space-saving 128-pin thin quad flat pack (TQFP) package, each channel of the TVP5154 decoder

converts NTSC, PAL, or SECAM video signals to 8-bit ITU-R BT.656 format. Discrete syncs are also

available. All four channels of the TVP5154 are independently controllable. The decoders share one

crystal for all channels and for all supported standards. The TVP5154 can be programmed using a single

inter-integrated circuit (I2C) serial interface. The decoder uses a 1.8-V supply for its analog and digital

supplies, and a 3.3-V supply for its I/O. The optimized architecture of the TVP5154 decoder allows for low

power consumption. The decoder consumes less than 720 mW of power in typical operation.

Each channel of the TVP5154 is an independent video decoder with a programmable polymorphic scaler.

Each channel converts baseband analog video into digital YCbCr 4:2:2 component video, which can then

be scaled down to any resolution to 1/256 vertical and 15-bit horizontal in 2-pixel decrements. Composite

and S-video inputs are supported. Each channel includes one 9-bit analog-to-digital converter (ADC) with

2 × sampling. Sampling is ITU-R BT.601 (27.0) MHz, generated from a single 14.31818-MHz crystal or

oscillator input) and is line locked. The output formats can be 8-bit 4:2:2 with discrete syncs or 8-bit ITU-R

BT.656 with embedded synchronization.

The TVP5154 utilizes Texas Instruments patented technology for locking to weak, noisy, or unstable

signals. A real-time control (RTC) output is generated for each channel for synchronizing downstream

video encoders.

Complementary 4-line adaptive comb filtering is available per channel for both the luma and chroma data

paths to reduce both cross-luma and cross-chroma artifacts. A chroma trap filter also is available.

An improved fast lock mode can be used when the input video standard is known and the signals on the

switching channels are clean. Note, switching from snow and/or noisy channels to good channels takes

longer. In fast lock mode, video lock is achieved in three fields or less.

Video characteristics, including hue, contrast, brightness, saturation, and sharpness, may be

independently programmed for each channel using the industry standard I2C serial interface. The

TVP5154 generates synchronization, blanking, lock, and clock signals in addition to digital video outputs

for each channel. The TVP5154 includes methods for advanced vertical blanking interval (VBI) data

retrieval. The VBI data processor slices, parses, and performs error checking on teletext, closed caption,

and other data in several formats.

I2C commands can be sent to one or more decoder cores simultaneously, reducing the amount of I2C

activity necessary to configure each core. A register controls which decoder core receives I2C commands,

and can be configured such that all four decoders receive commands at the same time.

The main blocks for each of the channels of the TVP5154 decoder include:

• Robust sync detector

• ADC with analog processor

• Y/C separation using 4-line adaptive comb filter

• Independent, concurrent scaler outputs

• Chrominance processor

• Luminance processor

• Video clock/timing processor and power-down control

• I2C interface

• VBI data processor

Introduction 2 Submit Documentation Feedback

www.ti.com

1.3.1 Related Products

1.3.2 Ordering Information

TVP5154

4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER

WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

• TVP5150

• TVP5150AM1

• TVP5145

• TVP5146

• TVP5147

• TVP5160

abc

0°C to 70°C

PACKAGED DEVICES

128-PIN TQFP- PowerPAD™

TVP5154PNP Tray

TVP5154PNPR Tape and reel

PACKAGE OPTION

Submit Documentation Feedback Introduction 3

www.ti.com

M U X

AIP1A AIP1B

AIP2A AIP2B

AIP3A AIP3B

AIP4A AIP4B

AGC

9−Bit A/D

Y/C

SEPARATION

VBI SLICER

LUMINANCE

PROCESSING

LUMINANCE

PROCESSING

LUMINANCE

PROCESSING

LUMINANCE

PROCESSING

CHROMINANCE

PROCESSING

CHROMINANCE

PROCESSING

CHROMINANCE

PROCESSING

CHROMINANCE

PROCESSING

SCALER

OUTPUT FORMATTEROUTPUT FORMATTEROUTPUT FORMATTEROUTPUT FORMATTER

CH1_OUT [7:0] YCBCR 8−Bit 4:2:2

CH2_OUT [7:0] YCBCR 8−Bit 4:2:2

CH3_OUT [7:0] YCBCR 8−Bit 4:2:2

CH4_OUT [7:0] YCBCR 8−Bit 4:2:2

SCL

SDA

XIN/OSC

XOUT

PLL

I2C

INTERFACE

HOST

PROCESSOR

SYNC PROCESSOR

FID/GLCO[1−4] VSYNC/PAL[1−4] INTERQ/GPCL/BLK[1−4]

HSYNC[1−4] AVID[1−4]

CLK[1−4] SCLK[1−4]

Y/C

SEPARATION

Y/C

SEPARATION

Y/C

SEPARATION

TVP5154 4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

2 Functional Block Diagram

4 Functional Block Diagram Submit Documentation Feedback

Figure 2-1. Functional Block Diagram

www.ti.com

TVP5154

128−Pin TQFP Package

(Top View)

CH2_OUT0 CH2_OUT1

IOVDD

INT2/GPCL2/VBLK2

AVID2 HSYNC2 VSYNC2/PALI2 FID2/GLCO2

DGND DVDD

120

119

118

117

116

115

114

113

112

111

110

109

124

123

122

121

128

127

126

125

INT1/GPCL1/VBLK1

AVID1

HSYNC1

IOGND

CH1_OUT0

XIN/OSC

SDA

I2CA0

DVDD

I2CA1

XOUT

PDN

CH1_OUT5

CH1_OUT6

CH1_OUT7

CH1_OUT4

CH1_OUT3

CH1_OUT2

CH1_OUT1

CH3_OUT1

100

104

103

102

101

108

107

106

105

92 91 90 89 88 87 86 85 84 83 82

81 80 79 78 77

96 95 94 93

AIP1A

5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

1 2 3 4

21 22 23 24 25 26 27 28 29 30

AGND

CH4_OUT5

CH4_OUT4

CH4_OUT6

CH4_OUT7

CH4_OUT3

CH4_OUT1

CH4_OUT0

CH4_OUT2

TMS

SCLK3

CLK3

FID4/GLCO4

VSYNC4/PALI4

CLK4

SCLK4

HSYNC4

IOVDD

IOGND

68 67

70 69

76 75

72 71

CLK2

SCLK2

CH2_OUT7

CH2_OUT6

CH2_OUT2 CH2_OUT3

CH2_OUT5

CH2_OUT4

IOGND

31 32

66 65

CH3_OUT2

RESETB

SCL

REFM1

REFP1

CH3_OUT0

AIP2B

REFM2 REFP2

PLL_GND

PLL_VDD

AGND

AVDD

AIP3A

REFM3 REFP3

PLL_GND

PLL_VDD

AGND

AVDD

AI4GND

REFM4 REFP4

PLL_GND

PLL_VDD

AGND

AVDD

AVID4

DGND

IOVDD

AI3GND

AVDD

AGND

AI1GND

AI2GND

IOVDD

IOGND

DVDD

DGND

DGND DVDD

IOGND

DVDD

DGND

IOVDD

FID3/GLCO3

VSYNC3/PALI3

HSYNC3

AVID3

CH3_OUT6 CH3_OUT7

CH3_OUT5

CH3_OUT4

CH3_OUT3

CLK1

SCLK1

VSYNC1/PALI1 FID1/GLCO1

AGND

AVDD

AIP4A

PLL_GND

PLL_VDD

TVP5154

128−Pin TQFP Package

(Top View)

IOVDD

INT2/GPCL2/VBLK2

AVID2 HSYNC2 VSYNC2/PALI2 FID2/GLCO2

DGND DVDD

120

119

118

117

116

115

114

113

112

111

110

109

124

123

122

121

128

127

126

125

AIP1B

INT1/GPCL1/VBLK1

AVID1

HSYNC1

IOGND

XIN/OSC

SDA

I2CA0

DVDD

XOUT

PDN

100

104

103

102

101

108

107

106

105

92 91 90 89 88 87 86 85 84 83 82

81 80 79 78 77

96 95 94

93 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

1 2 3 4

21 22 23 24 25 26 27 28 29 30

AGND

TMS

SCLK3

CLK3

FID4/GLCO4

VSYNC4/PALI4

CLK4

SCLK4

HSYNC4

IOVDD

IOGND

CLK2

SCLK2

IOGND

31 32

RESETB

SCL

REFM1

REFP1

AIP2A

REFM2 REFP2

PLL_GND

PLL_VDD

AGND

AVDD

AIP3B

REFM3 REFP3

PLL_GND

PLL_VDD

AGND

AVDD

AI4GND

REFM4 REFP4

PLL_GND

PLL_VDD

AGND

AVDD

AVID4

DGND

IOVDD

AI3GND

AVDD

AGND

AI1GND

AI2GND

IOVDD

IOGND

DVDD

DGND

DGND DVDD

IOGND

DVDD

DGND

IOVDD

FID3/GLCO3

VSYNC3/PALI3

HSYNC3

AVID3

CLK1

SCLK1

VSYNC1/PALI1 FID1/GLCO1

AGND

AVDD

AIP4B

PLL_GND

PLL_VDD

TVP5154

4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER

WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

3 Terminal Assignments

3.1 Pinout

Submit Documentation Feedback Terminal Assignments 5

www.ti.com

TVP5154 4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

3.2 Terminal Functions

TERMINAL

NAME NO.

Analog Section

AIP1A 2 I Analog inputs for Channel 1. Connect to the video analog input via a 0.1- µ F capacitor. The AIP1B 3 maximum input range is 0–0.75 VPP, and may require an attenuator to reduce the input

AIP2A 11 I Analog inputs for Channel 2. Connect to the video analog input via a 0.1- µ F capacitor. The AIP2B 12 maximum input range is 0-0.75 VPP, and may require an attenuator to reduce the input

AIP3A 22 I Analog inputs for Channel 3. Connect to the video analog input via a 0.1- µ F capacitor. The AIP3B 23 maximum input range is 0-0.75 VPP, and may require an attenuator to reduce the input

AIP4A 31 I Analog inputs for Channel 4. Connect to the video analog input via a 0.1- µ F capacitor. The AIP4B 32 maximum input range is 0-0.75 VPP, and may require an attenuator to reduce the input

AVDD 8, 15, 19, P Analog power supply. Connect to 1.8-V analog supply.

28, 127

AGND 9, 16, 20, P Analog power supply return. Connect to analog ground.

29, 35,

128

AIxGND 1, 10, 21, P Analog input signal return. Connect to analog ground.

PLL_GND 5, 14, 25, P PLL power supply return. Connect to analog ground.

PLL_VDD 4, 13, 24, P PLL power supply. Connect to 1.8-V analog supply.

REFMx 6, 17, 26, I Reference supply decoupling . Connect to analog ground through a 1- µ F capacitor. Connect

125 to REFPx through a 1- µ F capacitor.

REFPx 7, 18, 27, I Reference supply decoupling . Connect to analog ground through a 1- µ F capacitor. Connect

126 to REFMx through a 1- µ F capacitor.

Digital Section

DGND 47, 66, 82, P Digital power supply return. Connect to digital ground

99, 116

DVDD 46, 65, 81, P Digital power supply. Connect to 1.8-V digital supply.

98, 115

IOGND 44, 63, 79, P I/O power supply return. Connect to digital ground.

96, 113

IOVDD 45, 64, 80, P I/O power supply. Connect to 3.3-V digital supply

97, 114

FID1/GLCO1 94 O 1. FID: Odd/even field indicator or vertical lock indicator. For the odd/even indicator, a 1 FID2/GLCO2 75 indicates the odd field. FID3/GLCO3 56 2. GLCO: This serial output carries color PLL information. A slave device can decode the FID4/GLCO4 37 information to allow chroma frequency control from the TVP5154 decoder. Data is

AVID1 101 O Active video indicator. This signal is high during the horizontal active time of the video AVID2 78 output. AVID3 59 AVID4 40

INTREQ1/GPCL1/VBLK1 102 I/O 1. Interrupt request : Open drain when active low. INTREQ2/GPCL2/VBLK2 83 INTREQ3/GPCL3/VBLK3 60 INTREQ4/GPCL4/VBLK4 41

I/O DESCRIPTION

amplitude to the desired level. If not used, connect to AGND via a 0.1- µ F capacitor. Refer to the schematic in Section 12.

transmitted at the CLK rate in Genlock mode.

2. GPCL: General-purpose output. In this mode, the state of GPCL is directly programmed via I2C.

3. VBLK: Vertical blank output. In this mode, the GPCL terminal is used to indicate the VBI of the output video. The beginning and end times of this signal are programmable via I2C.

Terminal Assignments6 Submit Documentation Feedback

www.ti.com

4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER

WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

TVP5154

TERMINAL

NAME NO.

HSYNC1 100 O Horizontal synchronization HSYNC2 77 HSYNC3 58 HSYNC4 39

VSYNC1 /PALI1 95 O 1. VSYNC: Vertical synchronization VSYNC2 /PALI2 76 2. PALI: PAL line indicator or horizontal lock indicator. For the PAL line indicator, a 1 VSYNC3 /PALI3 57 indicates a noninverted line, and a 0 indicates an inverted line. VSYNC4 /PALI4 38

PDN 122 I Power down (active low). A 0 on this pin puts the decoder in standby mode. PDN preserves

RESETB 121 I Active-low reset. RESETB can be used only when PDN = 1. When RESETB is pulled low, it

SCL 120 I/O I2C serial clock (open drain) SDA 119 I/O I2C serial data (open drain) I2CA0 118 I During power-on reset, this pin is sampled along with pin 117 (I2CA1) to determine the I2C

I2CA1 117 I During power-on reset, this pin is sampled along with pin 118 (I2CA0) to determine the I2C

CLK1 103 O Unscaled system data clock at either 27 MHz or 54 MHz CLK2 84 CLK3 61 CLK4 42

SCLK1 104 O Scaled system data clock at 27 MHz. This signal can be used to qualify scaled/unscaled SCLK2 85 data when the unscaled system data clock is set to 54 MHz. SCLK3 62 SCLK4 43

XIN/OSC 124 I External clock reference. The user may connect XIN to an oscillator or to one terminal of a XOUT 123 O crystal oscillator. The user may connect XOUT to the other terminal of the crystal oscillator

CH1_OUT[7:0] 105–112 O Decoded ITU-R BT.656 output/YCbCr 4:2:2 output with discrete sync for channel 1 CH2_OUT[7:0] 86–93 O Decoded ITU-R BT.656 output/YCbCr 4:2:2 output with discrete sync for channel 2 CH3_OUT[7:0] 67–74 O Decoded ITU-R BT.656 output/YCbCr 4:2:2 output with discrete sync for channel 3 CH4_OUT[7:0] 48–55 O Decoded ITU-R BT.656 output/YCbCr 4:2:2 output with discrete sync for channel 4 TMS 36 I Test-mode select. This pin should be connected to digital ground for correct device

I/O DESCRIPTION

the value of the registers.

resets all the registers and restarts the internal microprocessor.

address the device is configured to. A 10-k Ω resistor should pull this either high (to IOVDD) or low to select different I2C device addresses.

or not connect XOUT at all. One single 14.31818-MHz crystal or oscillator is needed for ITU-R BT.601 sampling, for all supported standards.

operation.

4 Functional Description

4.1 Analog Front End

Each channel of the TVP5154 decoder has an analog input channel that accepts two video inputs, which should be ac coupled through 0.1- µ F capacitors. The decoder supports a maximum input voltage range of

0.75 V; therefore, an attenuation of one-half is needed for standard input signals with a peak-to-peak variation of 1.5 V. The maximum parallel termination before the input to the device is 75 Ω . Refer to schematic at the end of this document for recommended configuration. The two analog input ports can be connected as follows:

• Two selectable composite video inputs or

• One S-video input

An internal clamping circuit restores the ac-coupled video signal to a fixed dc level. The programmable gain amplifier (PGA) and the automatic gain control (AGC) circuit work together to

ensure that the input signal is amplified or attenuated correctly, ensuring the proper input range for the ADC.

Submit Documentation Feedback Functional Description 7

www.ti.com

TVP5154 4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

When switching CVBS inputs from one input to the other, the AGC settings are internally stored and the previous settings for the new input are restored. This eliminates flashes and dark frames associated with switching between inputs that have different signal amplitudes.

The ADC has nine bits of resolution and runs at a maximum speed of 27 MHz. The clock input for the ADC comes from the PLL.

4.2 Composite Processing Block Diagram

The composite processing block processes NTSC/PAL/SECAM signals into the YCbCr color space.

Figure 2-1 shows the basic architecture of this processing block. Figure 2-1 shows the luminance/chrominance (Y/C) separation process in the TVP5154 decoders. The

composite video is multiplied by sub-carrier signals in the quadrature modulator to generate the color difference signals Cb and Cr. Cb and Cr are then low pass (LP) filtered to achieve the desired bandwidth and to reduce crosstalk.

An adaptive 4-line comb filter separates CbCr from Y. Chroma is remodulated through another quadrature modulator and subtracted from the line-delayed composite video to generate luma. Contrast, brightness, hue, saturation, and sharpness (using the peaking filter) are programmable via I2C.

The Y/C separation is bypassed for S-video input. For S-video, the remodulation path is disabled.

4.3 Adaptive Comb Filtering

The 4-line comb filter can be selectively bypassed in the luma or chroma path. If the comb filter is bypassed in the luma path, chroma notch filters are used. TI’s patented adaptive 4-line comb filter algorithm reduces artifacts, such as hanging dots at color boundaries, and detects and properly handles false colors in high-frequency luminance images, such as a multiburst pattern or circle pattern.

4.4 Color Low-Pass Filter

In some applications, it is desirable to limit the Cb/Cr bandwidth to avoid crosstalk. This is especially true in the case of video signals that have asymmetrical Cb/Cr sidebands. The color LP filters provided limit the bandwidth of the Cb/Cr signals.

Color LP filters are needed when the comb filtering turns off, due to extreme color transitions in the input image. Refer to Chrominance Control #2 Register, for the response of these filters. The filters have three options that allow three different frequency responses based on the color frequency characteristics of the input video.

4.5 Luminance Processing

The luma component is derived from the composite signal by subtracting the remodulated chroma information. A line delay exists in this path to compensate for the line delay in the adaptive comb filter in the color processing chain. The luma information is then fed into the peaking circuit, which enhances the high-frequency components of the signal, thus, improving sharpness.

4.6 Chrominance Processing

For NTSC/PAL formats, the color processing begins with a quadrature demodulator. The Cb/Cr signals then pass through the gain control stage for chroma saturation adjustment. An adaptive comb filter is applied to the demodulated signals to separate chrominance and eliminate cross-chrominance artifacts. An automatic color-killer circuit is also included in this block. The color killer suppresses the chroma processing when the color burst of the video signal is weak or not present. The SECAM standard is similar to PAL except for the modulation of color, which is FM instead of QAM.

Functional Description8 Submit Documentation Feedback

www.ti.com

4.7 Timing Processor

4.8 VBI Data Processor

TVP5154

4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER

WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

The timing processor is a combination of hardware and software running in the internal microprocessor that serves to control horizontal lock to the input sync pulse edge, AGC and offset adjustment in the analog front end, and vertical sync detection.

The TVP5154 VBI data processor (VDP) slices various data services, such as teletext (WST, NABTS), closed caption (CC), wide screen signaling (WSS), etc. These services are acquired by programming the VDP to enable standards in the VBI. The results are stored in a FIFO and/or registers. The teletext results are stored in a FIFO only. Table 4-1 lists a summary of the types of VBI data supported according to the video standard. It supports ITU-R BT. 601 sampling for each.

Table 4-1. Data Types Supported by the VDP

LINE MODE REGISTER

(D0h–FCh) BITS [3:0]

0000b WST SECAM Teletext, SECAM 0001b WST PAL B Teletext, PAL, System B 0010b WST PAL C Teletext, PAL, System C 0011b WST, NTSC B Teletext, NTSC, System B 0100b NABTS, NTSC C Teletext, NTSC, System C 0101b NABTS, NTSC D Teletext, NTSC, System D (Japan) 0110b CC, PAL Closed caption PAL 0111b CC, NTSC Closed caption NTSC 1000b WSS, PAL Wide-screen signal, PAL 1001b WSS, NTSC Wide-screen signal, NTSC 1010b VITC, PAL Vertical interval timecode, PAL 1011b VITC, NTSC Vertical interval timecode, NTSC 1100b VPS, PAL Video program system, PAL 1111b Active Video Active video/full field

NAME DESCRIPTION

At power up, the host interface is required to program the VDP-configuration RAM (VDP-CRAM) contents with the lookup table (see Section 9.2.63). This is done through port address C3h. Each read from or write to this address auto increments an internal counter to the next RAM location. To access the VDP-CRAM, the line mode registers (D0h–FCh) must be programmed with FFh to avoid a conflict with the internal microprocessor and the VDP in both writing and reading. Full field mode must also be disabled.

Available VBI lines are from line 6 to line 27 of both field 1 and field 2. Each line can be any VBI mode. Output data is available either through the VBI-FIFO (B0h) or through dedicated registers at 90h–AFh,

both of which are available through the I2C port.

4.9 VBI FIFO and Ancillary Data in Video Stream

Sliced VBI data can be output as ancillary data in the video stream in the ITU-R BT.656 mode. VBI data is output during the horizontal blanking period following the line from which the data was retrieved. Table 4-2 shows the header format and sequence of the ancillary data inserted into the video stream. This format is also used to store any VBI data into the FIFO. The size of FIFO is 512 bytes. Therefore, the FIFO can store up to 11 lines of teletext data with the NTSC NABTS standard.

Submit Documentation Feedback Functional Description 9

www.ti.com

TVP5154 4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

Table 4-2. Ancillary Data Format and Sequence

BYTE D7

NO. (MSB)

0 0 0 0 0 0 0 0 0 Ancillary data preamble 1 1 1 1 1 1 1 1 1 2 1 1 1 1 1 1 1 1 3 NEP EP 0 1 0 DID2 DID1 DID0 Data ID (DID) 4 NEP EP F5 F4 F3 F2 F1 F0 Secondary data ID (SDID) 5 NEP EP N5 N4 N3 N2 N1 N0 Number of 32 bit data (NN) 6 Video line # [7:0] Internal data ID0 (IDID0) 7 0 0 0 Data error Match #1 Match #2 Video line # [9:8] Internal data ID1 (IDID1) 8 1. Data Data byte 1st word

9 2. Data Data byte 10 3. Data Data byte 11 4. Data Data byte

• • •

NEP EP CS[5:0] Check sum

4(N+2)-1 0 0 0 0 0 0 0 0 Fill byte

D6 D5 D4 D3 D2 D1 D0 (LSB) DESCRIPTION

— 1. Data Data byte Nth word

m. Data Data byte

EP: Even parity for D0–D5 NEP: Negated even parity DID: 91h: Sliced data of VBI lines of first field

53h: Sliced data of line 24 to end of first field 55h: Sliced data of VBI lines of second field

97h: Sliced data of line 24 to end of second field SDID: This field holds the data format taken from the line mode register of the corresponding line. NN: Number of Dwords beginning with byte 8 through 4(N+2). This value is the number of Dwords where

each Dword is 4 bytes. IDID0: Transaction video line number [7:0] IDID1: Bit 0/1 = Transaction video line number [9:8]

Bit 2 = Match 2 flag

Bit 3 = Match 1 flag

Bit 4 = 1 if an error was detected in the EDC block. 0 if not. CS: Sum of D0–D7 of DID through last data byte Fill byte: Fill bytes make a multiple of four bytes from byte 0 to last fill byte. For teletext modes, byte 8 is the

sync pattern byte. Byte 9 is 1. Data (the first data byte).

4.10 Raw Video Data Output

The TVP5154 decoder can output raw A/D video data at 2 × sampling rate for external VBI slicing. This is transmitted as an ancillary data block during the active horizontal portion of the line and during vertical blanking.

Functional Description10 Submit Documentation Feedback

www.ti.com

4.11 Output Formatter

TVP5154

4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER

WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

The output formatter is responsible for generating the output digital video stream. The YCbCr digital output can be programmed as 8-bit 4:2:2 or 8-bit ITU-R BT.656 parallel interface standard. Depending on which output mode is selected, the output for each channel can be unscaled data, scaled data, or both scaled and unscaled data interleaved in various ways.

Table 4-3. Summary of Line Frequencies, Data Rates, and Pixel Counts

STANDARDS

NTSC (M, 4.43), ITU-R BT.601 15.73426 858 720 27.00 PAL (B, D, G, H, I), ITU-R BT.601 15.625 864 720 27.00 PAL (M), ITU-R BT.601 15.73426 858 720 27.00 PAL (N), ITU-R BT.601 15.625 864 720 27.00 SECAM, ITU-R BT.601 15.625 864 720 27.00

HORIZONTAL LINE RATE PIXELS ACTIVE PIXELS CLK FREQUENCY

(kHz) PER LINE PER LINE (MHz)

4.12 Synchronization Signals

External (discrete) syncs are provided via the following signals:

• VSYNC (vertical sync)

• FID/VLK (field indicator or vertical lock indicator)

• GPCL/VBLK (general-purpose I/O or vertical blanking indicator)

• PALI/HLK (PAL switch indicator or horizontal lock indicator)

• HSYNC (horizontal sync)

• AVID (active video indicator)

VSYNC, FID, PALI, and VBLK are software set and programmable to the CLK pixel count. This allows any possible alignment to the internal pixel count and line count. The default settings for a 525-/625-line video output are shown in Figure 4-1 .

Submit Documentation Feedback Functional Description 11

www.ti.com

Composite

Video

525

VSYNC

GPCL/VBLK

FID

1 2 3 4 5 6 7 8 9 10 11 20 21 22

525 LINE

262 263 264 265 266 267 268 269 270 271 272 273 282 283 284

310 311 312 313 314 315 316 317 318 319 320 333 334 335 336

622 623 624 625 1 2 3 4 5 6 7 20 21 22 23

625 LINE

Composite

Video

VSYNC

GPCL/VBLK

FID

Composite

Video

VSYNC

GPCL/VBLK

FID

Composite

Video

VSYNC

GPCL/VBLK

FID

↔

VBLK Start

↔

VBLK Stop

↔

VBLK Start

↔

VBLK Stop

↔

VBLK Start

↔

VBLK Stop

↔

VBLK Start

↔

VBLK Stop

Line numbering conforms to ITU-R BT.470.

HSYN AVID

AVID STOP

AVID START

HSYN START

TVP5154 4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

Figure 4-1. 8-Bit 4:2:2, Timing With 2 × Pixel Clock (CLK) Reference

NOTE: AVID rising edge occurs four CLK cycles early when in ITU-R BT.656 output mode.

Figure 4-2. Horizontal Synchronization Signals

12 Functional Description Submit Documentation Feedback

www.ti.com

4.13 Active Video (AVID) Cropping

VSYNC

HSYNC

Active Video Area

AVID Cropped Area

AVID

Stop

AVID Start

VBLK

Start

VBLK

Stop

AVID cropping provides a means to decrease the amount of video data output. This is accomplished by horizontally blanking a number of AVID pulses and by vertically blanking a number of lines per frame. The horizontal AVID cropping is controlled using registers 11h and 12h for start pixels MSB and LSB, respectively.

Registers 13h and 14h provide access to stop pixels MSB and LSB, respectively. The vertical AVID cropping is controlled using the vertical blanking (VBLK) start and stop registers at addresses 18h and 19h. Figure 4-3 shows an AVID application.

AVID cropping can be independently controlled for scaled (registers 25h, 26h, 29h, and 2Ah) and unscaled (registers 11h thru 14h) data streams. AVID start and stop must be changed in multiples of two pixels to ensure correct UV alignment.

Additionally, AVID start and stop can be configured to include the SAV- and EAV-embedded sync signals or to exclude them, and to either include or exclude ITU656 ancillary data.

TVP5154

4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER

WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

Figure 4-3. AVID Application

4.14 Embedded Syncs

Standards with embedded syncs insert SAV and EAV codes into the data stream at the beginning and end of horizontal blanking. These codes contain the V and F bits that also define vertical timing. F and V change on EAV. Table 4-4 gives the format of the SAV and EAV codes.

H equals 1 always indicates EAV. H equals 0 always indicates SAV. The alignment of V and F to the line and field counter varies depending on the standard. Please refer to ITU-R BT.656 for more information on embedded syncs.

The P bits are protection bits:

P3 = V x or H P2 = F x or H P1 = F x or V P0 = F x or V x or H

Submit Documentation Feedback Functional Description 13

www.ti.com

Decoder

Scaler

Delay

54MHz

/2 =

27MHz

SCLK

CLK

Data

Mode

CLK edge

SCLK edge

Mode

=2/3

!=3

CLK OE

SCLK OE

Blank

=01

=11

=00

Field mode(0) Field mode(1) Field mode(2) Field mode(3) Field mode(4) Field mode(5) Field mode(6) Field mode(7) Field mode(8)

Field mode(9) Field mode(10) Field mode(11) Field mode(12) Field mode(13) Field mode(14) Field mode(15)

Decoder

Scaler

Delay

54MHz

/2 =

27MHz

SCLK

CLK

Data

Mode

CLK edge

SCLK edge

Mode

=2/3

!=3

CLK OE

SCLK OE

Blank

=01

=11

=00

Field mode(0)

Field mode(1)

Field mode(2)

Field mode(3)

Field mode(4)

Field mode(5)

Field mode(6)

Field mode(7)

Field mode(8)

Field mode(9) Field mode(10) Field mode(11) Field mode(12) Field mode(13) Field mode(14) Field mode(15)

TVP5154 4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

Table 4-4. EAV and SAV Sequence

8-BIT DATA

D7 (MSB) D6 D5 D4 D3 D2 D1 D0

Preamble 1 1 1 1 1 1 1 1 Preamble 0 0 0 0 0 0 0 0 Preamble 0 0 0 0 0 0 0 0 Status word 1 F V H P3 P2 P1 P0

The status word may be modified in order to pass information about whether the current data corresponds to scaled or unscaled data. See register 1Fh for more information.

4.15 Clock and Data Control

Figure 4-4 shows a logical schematic of the data and clock control signals.

Figure 4-4. Clock and Data Control

Functional Description14 Submit Documentation Feedback

www.ti.com

5 I2C Host Interface

TVP5154

4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER

WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

The I2C standard consists of two signals, serial input/output data line (SDA) and input/output clock line (SCL), which carry information between the devices connected to the bus. The input pins I2CA0 and I2CA1 are used to select the slave address to which the device responds. Although the I2C system can be multimastered, the TVP5154 decoder functions as a slave device only.

Both SDA and SCL must be connected to IOVDD via pullup resistors. When the bus is free, both lines are high. The slave address select terminals (I2CA0 and I2CA1) enable the use of four TVP5154 decoders on the same I2C bus. At the trailing edge of reset, the status of the I2CA0 and I2CA1 lines are sampled to determine the device address used. Table 5-1 summarizes the terminal functions of the I2C-mode host interface. Table 5-2 shows the device address selection options.

Table 5-1. I2C Terminal Description

SIGNAL TYPE DESCRIPTION

I2CA0 I Slave address selection I2CA1 I Slave address selection

SCL I/O (open drain) Input/output clock line

SDA I/O (open drain) Input/output data line

Table 5-2. I2C Host Interface Device Addresses

A6 A5 A4 A3 A2 A1 (I2CA1) A0 (I2CA0) R/W HEX

1 0 1 1 1 0 0 1/0 B9/B8 1 0 1 1 1 0 1 1/0 BB/BA 1 0 1 1 1 1 0 1/0 BD/BC 1 0 1 1 1 1 1 1/0 BF/BE

Data transfer rate on the bus is up to 400 kbit/s. The number of interfaces connected to the bus is dependent on the bus capacitance limit of 400 pF. The data on the SDA line must be stable during the high period of the SCL, except for start and stop conditions. The high or low state of the data line can only change with the clock signal on the SCL line being low. A high-to-low transition on the SDA line while the SCL is high indicates an I2C start condition. A low-to-high transition on the SDA line while the SCL is high indicates an I2C stop condition.

Every byte placed on the SDA must be eight bits long. The number of bytes that can be transferred is unrestricted. Each byte must be followed by an acknowledge bit. The acknowledge-related clock pulse is generated by the I2C master.

To simplify programming of each of the four decoder channels, a single I2C write transaction can be transmitted to any one or more of the four cores in parallel. This reduces the time required to download firmware or to configure the device when all channels are to be configured in the same manner. It also enables the addresses for all registers to be common across all decoders.

I2C sub-address 0xFE contains four bits, with each bit corresponding to one of the decoder cores. If this bit is set, I2C write transactions are sent to the corresponding decoder core. If the bit is 0, the corresponding decoder does not receive the I2C write transactions.

I2C sub-address 0xFF contains four bits, with each bit corresponding to one of the decoder cores. If this bit is set, I2C read transactions are sent to the corresponding decoder core. Note, only one of the bits in this register should be set at a given time, ensuring that only one decoder core is accessed at a time for read operations. If more than one bit is set, the lowest set bit number corresponds to the core that responds to the read transaction.

Submit Documentation Feedback 15

I2C Host Interface

www.ti.com

TVP5154 4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

Note, when register 0xFE is written to with any value, register 0xFF is set to 0x00. Likewise, when register 0xFF is written to with any value, register 0xFE is set to 0x00.

5.1 I2C Write Operation

Data transfers occur utilizing the following illustrated formats. An I2C master initiates a write operation to the TVP5154 decoder by generating a start condition (S)

followed by the TVP5154 I2C address (as shown below), in MSB first bit order, followed by a 0 to indicate a write cycle. After receiving an acknowledge from the TVP5154 decoder, the master presents the sub-address of the register, or the first of a block of registers it wants to write, followed by one or more bytes of data, MSB first. The TVP5154 decoder acknowledges each byte after completion of each transfer. The I2C master terminates the write operation by generating a stop condition (P).

abc

Step 1 0

I2C start (master) S

Step 2 7 6 5 4 3 2 1 0

I2C general address (master) 1 0 1 1 1 0 X 0

Step 3 9

I2C acknowledge (slave) A

Step 4 7 6 5 4 3 2 1 0

I2C write register address (master) addr addr addr addr addr addr addr addr

Step 5 9

I2C acknowledge (slave) A

Step 6 7 6 5 4 3 2 1 0

I2C write data (master) Data Data Data Data Data Data Data Data

(1)

Step 7

I2C acknowledge (slave) A

Step 8 0

I2C stop (master) P

(1) Repeat steps 6 and 7 until all data have been written.

5.2 I2C Read Operation

The read operation consists of two phases. The first phase is the address phase. In this phase, an I2C master initiates a write operation to the TVP5154 decoder by generating a start condition (S) followed by the TVP5154 I2C address, in MSB first bit order, followed by a 0 to indicate a write cycle. After receiving acknowledges from the TVP5154 decoder, the master presents the sub-address of the register or the first of a block of registers it wants to read. After the cycle is acknowledged, the master terminates the cycle immediately by generating a stop condition (P).

The second phase is the data phase. In this phase, an I2C master initiates a read operation to the TVP5154 decoder by generating a start condition followed by the TVP5154 I2C address (as shown below for a read operation), in MSB first bit order, followed by a 1 to indicate a read cycle. After an acknowledge from the TVP5154 decoder, the I2C master receives one or more bytes of data from the TVP5154 decoder. The I2C master acknowledges the transfer at the end of each byte. After the last data byte desired has been transferred from the TVP5154 decoder to the master, the master generates a not acknowledge followed by a stop.

16 Submit Documentation Feedback

I2C Host Interface

www.ti.com

TVP5154

4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER

WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

Read Phase 1

abc

Step 1 0

I2C start (master) S

Step 2 7 6 5 4 3 2 1 0

I2C general address (master) 1 0 1 1 1 0 X 0

Step 3 9

I2C acknowledge (slave) A

Step 4 7 6 5 4 3 2 1 0

I2C read register address (master) addr addr addr addr addr addr addr addr

Step 5 9

I2C acknowledge (slave) A

Step 6 0

I2C stop (master) P

Read Phase 2

abc

Step 7 0

I2C start (master) S

Step 8 7 6 5 4 3 2 1 0

I2C general address (master) 1 0 1 1 1 0 X 1

Step 9 9

I2C acknowledge (slave) A

Step 10 7 6 5 4 3 2 1 0

I2C read data (slave) Data Data Data Data Data Data Data Data

(1)

Step 11

I2C not acknowledge (master) A

Step 12 0

I2C stop (master) P

(1) Repeat steps 10 and 11 for all bytes read. Master does not acknowledge the last read data received.

5.2.1 I2C Timing Requirements

The TVP5154 decoder requires delays in the I2C accesses to accommodate its internal processor’s timing. In accordance with I2C specifications, the TVP5154 decoder holds the I2C clock line (SCL) low to indicate the wait period to the I2C master. If the I2C master is not designed to check for the I2C clock line held-low condition, the maximum delays must always be inserted where required. These delays are of variable length; maximum delays are indicated in the following diagram:

Table 5-3. I2C Timing

Start Slave address (B8h) Ack Subaddress Ack Data (XXh) Ack Wait 128 µ s

(1) If the SCL pin is not monitored by the master to enable pausing, a delay of 128 µ s should be inserted between transactions for registers

00h through 8Fh.

Submit Documentation Feedback 17

(1)

I2C Host Interface

Stop

www.ti.com

14.31818 MHz

14.31818-MHz Crystal

124

123 123

CL1

CL2

1.8-V Clock

124

dto

ctrl

clk

TVP5154 4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

6 Clock Circuits

An internal line-locked PLL generates the system and pixel clocks. A 14.31818-MHz clock is required to drive the PLL. This may be input to the TVP5154 decoder on terminal 124 (XIN), or a crystal of

14.31818-MHz fundamental resonant frequency may be connected across terminals 123 and 124 (XIN and XOUT). Figure 6-1 shows the reference clock configurations. For the example crystal circuit shown (a parallel-resonant crystal with 14.31818-MHz fundamental frequency), the external capacitors must have the following relationship:

= C

= 2C

– C

STRAY

is the terminal capacitance with respect to ground. Figure 6-1 shows the reference clock

where C configurations.

STRAY

7 Genlock Control and RTC

A Genlock control (GLCO) function is provided to support a standard video encoder to synchronize its internal color oscillator for properly reproduced color with unstable timebase sources like VCRs.

The frequency control word of the internal color subcarrier digital control oscillator (DTO) and the subcarrier phase reset bit are transmitted via the GLCO terminal. The frequency control word is a 23-bit binary number. The frequency of the DTO can be calculated from the following equation:

where Fdto is the frequency of the DTO, Fctrl is the 23–bit DTO frequency control, and Fclk is the frequency of the CLK.

7.1 TVP5154 Genlock Control Interface

A write of 1 to bit 4 of the chrominance control register at I2C subaddress 1Ah causes the subcarrier DTO phase reset bit to be sent on the next scan line on GLCO. The active-low reset bit occurs seven CLKs after the transmission of the last bit of DCO frequency control. Upon the transmission of the reset bit, the phase of the TVP5154 internal subcarrier DCO is reset to zero.

A Genlock slave device can be connected to the GLCO terminal and uses the information on GLCO to synchronize its internal color phase DCO to achieve clean line and color lock.

Figure 6-1. Clock and Crystal Connectivity

(1)

7.2 RTC Mode

Figure 7-1 shows the timing diagram of the RTC mode. Clock rate for the RTC mode is four times slower

than the GLCO clock rate. For PLL frequency control, the upper 22 bits are used. Each frequency control bit is two clock cycles long. The active-low reset bit occurs six CLKs after the transmission of the last bit of PLL frequency control.

Clock Circuits18 Submit Documentation Feedback

www.ti.com

CLK

GLCO

23-Bit Frequency Control

Start Bit DCO Reset Bit

MSB

>128 CLK

1 CLK

7 CLK23 CLK

1 CLK

LSB

22 21

RTC

16 CLK

L S B

128 CLK

22-Bit Fsc Frequency Control

Start

Bit

Reset

Bit

2 CLK

1 CLK

2 CLK

3 CLK

1 CLK

PAL

Switch

44 CLK

GLCO Timing

4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER

WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

TVP5154

Figure 7-1. RTC Timing

8 Power-Up, Reset, and Power-Down Sequence (Required)

Terminals 121 (RESETB) and 122 (PDN) work together to put the TVP5154 decoder into one of three modes. Table 8-1 shows the configuration.

After power up, the device is in an unknown state with its outputs undefined until it receives a RESETB active low for at least 200 ns. The power supplies should be active and stable for 10 ms before RESETB becomes inactive. There are no power-sequencing requirements, except that all power supplies should become active and stable within 500 ms of each other.

After each power-up and hardware reset, this procedure must be followed:

1. Wait at least 1 ms. Each decoder must be started by writing 0x00h to register 7Fh for all four decoders.

2. Wait at least 1 ms. Check the status of the TVP5154 by doing an I2C read of the version number, register 81h, for all four decoders.

3. Verify that the value 0x54h is read.

4. If the value 0x54h is not read, toggle the TVP5154 reset pin (RESETB, pin number 121).

This procedure should be repeated if necessary until the value 0x54h is read from register 81h for all four decoders.

Submit Documentation Feedback Power-Up, Reset, and Power-Down Sequence (Required) 19

www.ti.com

TVP5154 4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

Table 8-1. Reset and Power-Down Modes

PDN RESETB CONFIGURATION

0 0 Reserved (undefined state) 0 1 Powers down the decoder 1 0 Resets the decoder 1 1 Normal operation

9 Internal Control Registers

9.1 Overview

The TVP5154 decoder is initialized and controlled by sets of internal registers that set all device operating parameters. Communication between the external controller and the TVP5154 decoder is through the I2C. Two sets of registers exist, direct and indirect. Table 9-1 shows the summary of the direct registers. Reserved registers must not be written. Reserved bits in the defined registers must be written with 0s, unless otherwise noted. The detailed programming information of each register is described in the following sections.

I2C register 0xFE controls which of the four decoders receives I2C commands. I2C register 0xFF controls which decoder core responds to I2C reads. Note, for a read operation, it is necessary to perform a write first, in order to set the desired sub-address for reading.

After power up and the hardware reset, each decoder must be started by writing 0x00h to register 7Fh for all four decoders.

Table 9-1. Direct Register Summary

Video input source selection #1 00h 00h R/W Analog channel controls 01h 15h R/W Operation mode controls 02h 00h R/W Miscellaneous controls 03h 01h R/W Autoswitch mask 04h DCh R/W Clock control 05h 08h R/W Color killer threshold control 06h 10h R/W Luminance processing control #1 07h 60h R/W Luminance processing control #2 08h 00h R/W Brightness control 09h 80h R/W Color saturation control 0Ah 80h R/W Hue control 0Bh 00h R/W Contrast control 0Ch 80h R/W Outputs and data rates select 0Dh 47h R/W Luminance processing control #3 0Eh 00h R/W Configuration shared pins 0Fh 08h R/W Reserved 10h Active video cropping start MSB for unscaled data 11h 00h R/W Active video cropping start LSB for unscaled data 12h 00h R/W Active video cropping stop MSB for unscaled data 13h 00h R/W Active video cropping stop LSB for unscaled data 14h 00h R/W Genlock/RTC 15h 01h R/W Horizontal sync start 16h 80h R/W

(1)

(1) R = Read only, W = Write only, R/W = Read and write

Internal Control Registers20 Submit Documentation Feedback

www.ti.com

4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER

WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

Table 9-1. Direct Register Summary (continued)

Ancillary SAV/EAV control 17h 52h R/W Vertical blanking start 18h 00h R/W Vertical blanking stop 19h 00h R/W Chrominance processing control #1 1Ah 0Ch R/W Chrominance processing control #2 1Bh 14h R/W Interrupt reset register B 1Ch 00h R/W Interrupt enable register B 1Dh 00h R/W Interrupt configuration register B 1Eh 00h R/W Output control 1Fh 00h R/W Reserved 20h I2C indirect registers 21h–24h 00h R/W AVID start/control for scaled data 25h–26h 00h R/W Reserved 27h Video standard 28h 00h R/W AVID stop for scaled data 29h–2Ah 00h R/W Reserved 2Bh Cb gain factor 2Ch R Cr gain factor 2Dh R Reserved 2Eh–2Fh 656 Revision Select 30 00h R/W Reserved 31h–7Fh MSB of device ID 80h 51h R LSB of device ID 81h 54h R ROM major version 82h 02h R ROM minor version 83h 00h R Vertical line count MSB 84h R Vertical line count LSB 85h R Interrupt status register B 86h R Interrupt active register B 87h R Status register #1 88h R Status register #2 89h R Status register #3 8Ah R Status register #4 8Bh R Status register #5 8Ch R Reserved 8Dh–8Fh Closed caption data registers 90h–93h R WSS data registers 94h–99h R VPS data registers 9Ah–A6h R VITC data registers A7h–AFh R VBI FIFO read data B0h R Teletext filter 1 B1h–B5h 00h R/W Teletext filter 2 B6h–BAh 00h R/W Teletext filter enable BBh 00h R/W Reserved BCh–BFh Interrupt status register A C0h 00h R/W Interrupt enable register A C1h 00h R/W Interrupt configuration C2h 04h R/W

TVP5154

(1)

Submit Documentation Feedback Internal Control Registers 21

www.ti.com

TVP5154 4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

Table 9-1. Direct Register Summary (continued)

VDP configuration RAM data C3h B8h R/W Configuration RAM address low byte C4h 1Fh R/W Configuration RAM address high byte C5h 00h R/W VDP status register C6h R FIFO word count C7h R FIFO interrupt threshold C8h 80h R/W FIFO reset C9h 00h W Line number interrupt CAh 00h R/W Pixel alignment register low byte CBh 4Eh R/W Pixel alignment register high byte CCh 00h R/W FIFO output control CDh 01h R/W Reserved CEh Full field enable CFh 00h R/W

Line mode registers R/W Full field mode register FCh 7Fh R/W

Reserved FDh Decoder core write enables FEh 0Fh R/W Decoder core read enables FFh 00h R/W

(1)

D0h 00h

D1h–FBh FFh

9.2 Direct Register Definitions

Direct registers are written to by performing a 3-byte I2C transaction:

START : DEVICE_ID : SUB_ADDRESS : DATA : STOP

Each direct register is eight bits wide.

9.2.1 Video Input Source Selection #1 Register

Address 00h Default 00h

7 6 5 4 3 2 1 0

Reserved Black output Reserved Channel n source selection S-video selection

Channel n source selection:

0 = AIPnA selected (default) 1 = AIPnB selected

Internal Control Registers22 Submit Documentation Feedback

www.ti.com

4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER

WITH INDEPENDENT SCALERS AND FAST LOCK

Table 9-2. Analog Channel and Video Mode Selection

TVP5154

SLES163A – MARCH 2006 – REVISED JULY 2006

INPUT(S) SELECTED

Composite

S-Video AIPnA (luma), AIPnB (chroma) x 1

AIPnA (default) 0 0

AIPnB 1 0

ADDRESS 00

BIT 1 BIT 0

Where n = 1, 2, 3, 4 Black output:

0 = Normal operation (default) 1 = Force black screen output (outputs synchronized)

a. Forced to 10h in normal mode b. Forced to 01h in extended mode

9.2.2 Analog Channel Controls Register

Address 01h Default 15h

7 6 5 4 3 2 1 0

Reserved 1 Automatic offset control Automatic gain control

Automatic offset control:

00 = Disabled 01 = Automatic offset enabled (default) 10 = Reserved 11 = Offset level frozen to the previously set value

Automatic gain control (AGC):

00 = Disabled (fixed gain value) 01 = AGC enabled (default) 10 = Reserved 11 = AGC frozen to the previously set value

Submit Documentation Feedback Internal Control Registers 23

www.ti.com

TVP5154 4-CHANNEL LOW-POWER PAL/NTSC/SECAM VIDEO DECODER WITH INDEPENDENT SCALERS AND FAST LOCK

SLES163A – MARCH 2006 – REVISED JULY 2006

9.2.3 Operation Mode Controls Register

Address 02h Default 00h

7 6 5 4 3 2 1 0

Fast lock mode TV/VCR mode

Fast lock mode:

0 = Normal operation (default) 1 = Fast lock mode. Locks within three fields if stable input signal and forced video standard.

Color burst reference enable:

0 = Color burst reference for AGC disabled (default) 1 = Color burst reference for AGC enabled

TV/VCR mode:

00 = Automatic mode determined by the internal detection circuit (default) 01 = Reserved 10 = VCR (nonstandard video) mode 11 = TV (standard video) mode

With automatic detection enabled, unstable or nonstandard syncs on the input video forces the detector into the VCR mode. This turns off the comb filters and turns on the chroma trap filter.

White peak disable:

0 = White peak protection enabled (default) 1 = White peak protection disabled

Color subcarrier PLL frozen:

0 = Color subcarrier PLL increments by the internally generated phase increment (default).

GLCO pin outputs the frequency increment.

1 = Color subcarrier PLL stops operating.

GLCO pin outputs the frozen frequency increment.

Luma peak disable

0 = Luma peak processing enabled (default) 1 = Luma peak processing disabled

Power-down mode:

0 = Normal operation (default) 1 = Power-down mode. A/Ds are turned off and internal clocks are reduced to minimum.

Color burst White peak Color subcarrier Luma peak Power down

reference enable disable PLL frozen disable mode

Internal Control Registers24 Submit Documentation Feedback

+ 53 hidden pages