ANALOG DEVICES ADV7402, ADV7400 Service Manual

ADV7402/ADV7400 Multiformat
Video Decoders for Advanced TV

Integrated Multiformat SDTV/HDTV Video Decoder and RGB Graphics Digitizer

The ADV®7402 high performance multiformat video decoder is the first to integrate 12-bit
quality video decoding with high speed graphics and high definition video digitization.
Designed for the highest mixed-signal performance, Noise Shaped Video ADCs enable
true 10-bit data output accuracy for all sources up to HDTV rates.

With 12 analog input channels, the ADV7402 enables system designers to choose
one part to route or convert multiple analog video inputs into industry-standard or
proprietary output interfaces. With support for single data rate (SDR) and double
data rate (DDR) output modes, interfacing to popular scalers, MPEG A/V CODECs,
and graphics processors is easily achieved.

Using the on-board 3  3 conversion matrix, digital or analog RGB inputs can be
converted to any color space. The ADV7402 is suitable for a wide range of domestic
and worldwide consumer electronics designs, and is ideal for home theater projectors
or direct view and rear projection HDTVs, where two or more chips (decoder and
ADC) can be replaced with one ADV7402 IC. For cost-sensitive applications, the
ADV7400 provides designers with high performance 10-bit ADCs and an 8-bit
accurate output interface.

Key Features

• 12-bit Noise Shaped Video

®

(NSV) ADCs

• True 10-bit video data processing and output

• 110 MSPS conversion rate supports

RGB input resolutions up to
1280  1024 @ 60 Hz (SXGA)

• NTSC, PAL, and SECAM color

standards support

• Chroma transient improvement (CTI)

• Full component HDTV input support for

525p, 625p, 720p, and 1080i, plus many
other HD and SMPTE standards

• CVBS, S-Video, YPbPr, and RGB input

support, including 5-wire YPbPrHV/RGBHV
and CSync

• 4 oversampling (54 MHz) for standard

definition and 2 oversampling for
progressive scan inputs

• 5-line super adaptive comb filters for

advanced NTSC and PAL 2D Y/C separation

• 24-bit digital RGB input port accepts data

from common DVI/HDMI receivers

• Any-to-Any 3  3 color space converter

• Fully certified Macrovision

®

detection for

525i, 625i, 525p, and 625p

• Adaptive digital line length tracking

(ADLLT

™

) enables robust sync stability
for poor video sources such as VCRs
and camcorders, including noisy, weak,
or distorted composite video signals from
tuners and other nonstandard sources

• Digital automatic gain control (AGC) for

super fast response to step input changes

• VBI data slicer supports CGMS, WSS,

EDTV, Gemstar

™

1/2, CC, and XDS

2

ADV7402 Product
Specifications

• 12-bit ADCs: 65 dB SNR

(luma flat field)

• 0.4% differential gain, 0.4°

differential phase (typical)

• 100-lead 100% Pb-free 14

mm  14 mm LQFP

• 0°C to +70°C and –40°C to

+85°C* temperature ranges

ADV7402 Product Specifications

• 0.5 V to 1.6 V analog signal input range

• 3.3 V analog, 1.8 V digital core, 3.3 V I/O power supplies

• 2-wire serial MPU interface (I

2C®

compatible) (400 kbps max)

• 30-bit configurable pixel output port

• 8-/10-bit 4:2:2 YCbCr

• 16-/20-bit 4:2:2 YCbCr

• 24-/30-bit 4:4:4 YCbCr/RGB

• Double-Data-Rate (DDR) output modes

•

8-bit 4:2:2 YCbCr

• 12-bit 4:4:4 RGB (graphics)

• 10-bit digital baseband composite video input for external tuner support

• Automatic VCR/TV detection and processing

• VBI data output through pixel port interface (ancillary data packets as

per ITU-R BT.1364) for closed captioning (CC) and Gemstar™ 1/2

• Other VBI data services accessible via the I

2

C interface include copy
generation management system (CGMS), wide screen signalling (WSS),
EDTV, closed captioning (CC) and extended data services (XDS).

• Support for all worldwide color formats:

• PAL B/D/I/G/H, PAL60, PAL M, PAL N, PAL Nc

•

NTSC M/J, NTSC 4.43

• SECAM B/D/G/K/L

• NTSC Square Pixel Support

DATA

PREPROCESSOR

COLOUR SPACE

CONVERTER

DECIMATION AND
DOWNSAMPLING

FILTERS

SYNC

(A)
(B)
(C)

(A)

(B)

(C)

STANDARD DEFINITION PROCESSOR

GLOBAL CONTROL AND VBI DATA SLICER

MACROVISION DETECTION

2D 4H COMB FILTER

ADAPTIVE SYNC EXTRACTION

(ADLLT™)

LUMA FILTERING

DIGITAL CLAMP AND GAIN CONTROL

COMPONENT PROCESSOR

DIGITAL

FINE CLAMP

GAIN AND OFFSET

CONTROL

TIMING CONTROL

NOISE AND CALIBRATION MEASUREMENT

MACROVISION AND

CGMS DETECTION

SYNC SOURCE AND
POLARITY DETECT

SYNC EXTRACTION

CHROMA FILTERING

AND DEMODULATION

CTI

2D 4H

COMB FILTER

DIGITAL CLAMP AND GAIN CONTROL

OUTPUT FORMATTER

PIXEL
DATA

HS

10

VS

LLC

SFL/
SYNC_OUT

FIELD/DE

10

10

A/DCLAMP

CLAMP

CLAMP A/D

A/D

12 CHANNEL

INPUT

MATRIX

SYNC PROCESSING AND

CLOCK GENERATION

DIGITAL VIDEO

INPUT PORT

DUAL PORT

SERIAL INTERFACE

CONTROL (1) AND

VBI DATA (2)

MUX

YPrPb

RGB

YC AND

CVBS

SOG

SOY
HS_IN
VS_IN

ALTF/

DE_IN

DCLK_IN

HS_IN
VS_IN

SCLK 1

SDA 1

SCLK 2

SDA 2

ALSB

CONTROL

CONTROL

HS/CS AND VS

SYNC / CONTROL

SERIAL INTERFACE

CONTROL AND DATA

CONTROL

ADV7402 BLOCK DIAGRAM

12

12

12

CVBS RGB

2410 OR

24

*ADV7400 only.