Multiformat SDTV Video Decoder
ADV7183A
FEATURES
Multiformat video decoder supports NTSC-(M, N, 4.43),
PAL-(B/D/G/H/I/M/N), SECAM
Integrates three 54 MHz, 10-bit ADCs
Clocked from a single 27 MHz crystal
Line-locked clock compatible (LLC)
Adaptive Digital Line Length Tracking (ADLLT™)
5-line adaptive comb filters
Proprietary architecture for locking to weak, noisy, and
unstable video sources such as VCRs and tuners
Subcarrier frequency lock and status information output
Integrated AGC with adaptive peak white mode
Macrovision® copy protection detection
CTI (chroma transient improvement)
DNR (digital noise reduction)
Multiple programmable analog input formats:
CVBS (composite video)
S-Video (Y/C)
YPrPb component (VESA, MII, SMPTE, and BetaCam)
12 analog video input channels
Automatic NTSC/PAL/SECAM identification
Digital output formats (8-bit or16-bit):
ITU-R BT.656 YCrCb 4:2:2 output + HS, VS, and FIELD
0.5 V to 1.6 V analog signal input range
Differential gain: 0.5% typ
Differential phase: 0.5° typ
Programmable video controls:
Peak-white/hue/brightness/saturation/contrast
Integrated on-chip video timing generator
Free run mode (generates stable video ouput with no I/P)
VBI decode support for
Close captioning, WSS, CGMS, EDTV, Gemstar® 1×/2×
Power-down mode
2-wire serial MPU interface (I
2
C® compatible)
3.3 V analog, 1.8 V digital core; 3.3 V IO supply
2 temperature grades: –25°C to +70°C and –40°C to +85°C
80-lead LQFP Pb-free package
APPLICATIONS
DVD recorders
Video projectors
HDD-based PVRs/DVDRs
LCD TVs
Set-top boxes
Security systems
Digital televisions
AVR receiver
GENERAL DESCRIPTION
The ADV7183A integrated video decoder automatically detects
and converts a standard analog baseband television signal
compatible with worldwide standards NTSC, PAL, and SECAM
into 4:2:2 component video data compatible with 16-/8-bit
CCIR601/CCIR656.
The advanced and highly flexible digital output interface
enables performance video decoding and conversion in line-
locked clock based systems. This makes the device ideally suited
for a broad range of applications with diverse analog video
characteristics, including tape based sources, broadcast sources,
security/surveillance cameras, and professional systems.
The 10-bit accurate A/D conversion provides professional
quality video performance and is unmatched. This allows true
8-bit resolution in the 8-bit output mode.
The 12 analog input channels accept standard Composite, S-
Video, YPrPb video signals in an extensive number of
combinations. AGC and clamp restore circuitry allow an input
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
video signal peak-to-peak range of 0.5 V up to 1.6 V.
Alternatively, these can be bypassed for manual settings.
The fixed 54 MHz clocking of the ADCs and datapath for all
modes allows very precise, accurate sampling and digital
filtering. The line-locked clock output allows the output data
rate, timing signals, and output clock signals to be synchronous,
asynchronous, or line locked even with ±5% line length
variation. The output control signals allow glueless interface
connections in almost any application. The ADV7183A modes
are set up over a 2-wire, serial, bidirectional port (I
2
C
compatible).
The ADV7183A is fabricated in a 3.3 V CMOS process. Its
monolithic CMOS construction ensures greater functionality
with lower power dissipation.
The ADV7183A is packaged in a small 80-lead LQFP Pb-free
package.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703
© 2004 Analog Devices, Inc. All rights reserved.
ADV7183A
TABLE OF CONTENTS
Introduction ...................................................................................... 4
Analog Front End ......................................................................... 4
Standard Definition Processor ................................................... 4
Functional Block Diagram .............................................................. 5
Specifications..................................................................................... 6
Electrical Characteristics ............................................................. 6
Video Specifications..................................................................... 7
Timing Specifications .................................................................. 8
Analog Specifications................................................................... 8
Thermal Specifications ................................................................ 8
Timing Diagrams.......................................................................... 9
Absolute Maximum Ratings.......................................................... 10
ESD Caution................................................................................ 10
Pin Configuration and Function Descriptions........................... 11
Analog Front End ........................................................................... 13
Analog Input Muxing ................................................................ 13
Global Control Registers ............................................................... 16
Power-Save Modes...................................................................... 16
Reset Control .............................................................................. 16
Global Pin Control ..................................................................... 17
Global Status Registers................................................................... 19
Identification............................................................................... 19
Status 1 ......................................................................................... 19
Status 2 ......................................................................................... 20
Status 3 ......................................................................................... 20
Standard Definition Processor (SDP).......................................... 21
SD Luma Path ............................................................................. 21
SD Chroma Path......................................................................... 21
SDP Sync Processing.................................................................. 22
SDP VBI Data Recovery ............................................................ 22
SDP General Setup ..................................................................... 22
SDP Color Controls ................................................................... 25
SDP Clamp Operation............................................................... 27
SDP Luma Filter ......................................................................... 28
SDP Chroma Filter..................................................................... 31
SDP Gain Operation .................................................................. 32
SDP Chroma Transient Improvement (CTI).......................... 36
SDP Digital Noise Reduction (DNR) ...................................... 37
SDP Comb Filters....................................................................... 37
SDP AV Code Insertion and Controls..................................... 40
SDP Synchronization Output Signals...................................... 42
SDP Sync Processing.................................................................. 51
SDP VBI Data Decode ............................................................... 52
Pixel Port Configuration ............................................................... 63
MPU Port Description................................................................... 64
Register Accesses ........................................................................ 65
Register Programming............................................................... 65
I
2
C Sequencer.............................................................................. 65
I
2
C Control Register Map.......................................................... 66
I
2
C Register Map Details ........................................................... 70
Appendix A...................................................................................... 97
I
2
C Programming Examples ..................................................... 97
Appendix B.................................................................................... 100
PCB Layout Recommendations ............................................. 100
Appendix C ................................................................................... 102
Typical Circuit Connection .................................................... 102
Outline Dimensions ..................................................................... 104
Ordering Guide ........................................................................ 104
Rev. A | Page 2 of 104
ADV7183A
REVISION HISTORY
Revision A
6/04—Changed from Rev. 0 to Rev. A.
Addition to Applications List...........................................................1
Changes to Table 3 ............................................................................8
Changes to Table 5 ............................................................................8
Change to Drive Strength Selection (Data) Section ...................17
Changes to Figure 42 ....................................................................103
Revision 0
5/04—Revision 0: Initial Version
Rev. A | Page 3 of 104
ADV7183A
INTRODUCTION
The ADV7183A is a high quality, single chip, multiformat video
decoder that automatically detects and converts PAL, NTSC,
and SECAM standards in the form of composite, S-Video, and
component video into a digital ITU-R BT.656 format.
The advanced and highly flexible digital output interface
enables performance video decoding and conversion in line-
locked clock based systems. This makes the device ideally suited
for a broad range of applications with diverse analog video
characteristics, including tape based sources, broadcast sources,
security/surveillance cameras, and professional systems.
STANDARD DEFINITION PROCESSOR
The ADV7183A is capable of decoding a large selection of
baseband video signals in composite, S-Video, and component
formats. The video standards supported by the SDP include
PAL B/D/I/G/H, PAL60, PAL M, PAL N, PAL Nc, NTSC M/J,
NTSC 4.43, and SECAM B/D/G/K/L. The ADV7183A can
automatically detect the video standard and process it
accordingly.
The ADV7183A has a 5-line, superadaptive, 2D comb filter that
gives superior chrominance and luminance separation when
decoding a composite video signal. This highly adaptive filter
automatically adjusts its processing mode according to video
standard and signal quality with no user intervention required.
Video user controls such as brightness, contrast, saturation, and
hue are also available within the ADV7183A.
The ADV7183A implements a patented adaptive digital line-
length tracking (ADLLT) algorithm to track varying video line
lengths from sources such as a VCR. ADLLT enables the
ADV7183A to track and decode poor quality video sources
such as VCRs, noisy sources from tuner outputs, VCD players,
and camcorders. The ADV7183A contains a chroma transient
improvement (CTI) processor that sharpens the edge rate of
chroma transitions, resulting in sharper vertical transitions.
The SDP can process a variety of VBI data services, such as
closed captioning (CC), wide screen signaling (WSS), copy
generation management system (CGMS), EDTV, Gemstar
1×/2×, and extended data service (XDS). The ADV7183A is
fully Macrovision certified; detection circuitry enables Type I,
II, and III protection levels to be identified and reported to the
user. The decoder is also fully robust to all Macrovision signal
inputs.
ANALOG FRONT END
The ADV7183A analog front end comprises three 10-bit ADCs
that digitize the analog video signal before applying it to the
standard definition processor. The analog front end employs
differential channels to each ADC to ensure high performance
in mixed-signal applications.
The front end also includes a 12-channel input mux that enables
multiple video signals to be applied to the ADV7183A. Current
and voltage clamps are positioned in front of each ADC to
ensure that the video signal remains within the range of the
converter. Fine clamping of the video signals is performed
downstream by digital fine clamping within the ADV7183A.
The ADCs are configured to run in 4× oversampling mode.
Rev. A | Page 4 of 104
12
DATA
PREPROCESSOR
10
10
LUMA
FILTER
GAIN
CONTROL
LUMA
RESAMPLE
LUMA
2D COMB
(4H MAX)
10
STANDARD DEFINITION PROCESSOR
AIN1–AIN12
CLAMP
A/D
10
INPUT
MUX
CLAMP
A/D
FUNCTIONAL BLOCK DIAGRAM
8
8
PIXEL
DATA
CVBS
S-VIDEO
YPrPb
10
CLAMP
L-DNR
A/D
DECIMATION AND
DOWNSAMPLING
FILTERS
LUMA
DIGITAL
FINE
CLAMP
SYNC AND
CLK CONTROL
SYNC
EXTRACT
LINE
LENGTH
PREDICTOR
RESAMPLE
CONTROL
SYNC PROCESSING AND
CLOCK GENERATION
AV
CODE
INSERTION
16
HS
VS
CTI
C-DNR
FIELD
04821-0-001
Rev. A | Page 5 of 104
F
SC
RECOVERY
OUTPUT FORMATTER
Figure 1.
ADV7183A
CHROMA
DIGITAL
FINE
CLAMP
CHROMA
DEMOD
CHROMA
FILTER
GAIN
CONTROL
CHROMA
RESAMPLE
CHROMA
2D COMB
(4H MAX)
LLC1
LLC2
SFL
CONTROL
AND DATA
VBI DATA RECOVERY
GLOBAL CONTROL
SYNTHESIZED
LLC CONTROL
SCLK
SDA
ALSB
MACROVISION
DETECTION
SERIAL INTERFACE
CONTROL AND VBI DATA
STANDARD
AUTODETECTION
FREE RUN
OUTPUT CONTROL
ADV7183A
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