Digital PAL/NTSC Video Encoder
with Six DACs (10 Bits), Color Control
and Enhanced Power Management
a
ADV7172/ADV7173*
Color Signal Control/Burst Signal Control
Interlaced/Noninterlaced Operation
Complete On-Chip Video Timing Generator
Programmable Multimode Master/Slave Operation
Macrovision AntiTaping Rev 7.01 (ADV7172 Only)2
Closed Captioning Support
FEATURES
ITU-R1 BT601/656 YCrCb to PAL/NTSC Video Encoder
Six High Quality 10-Bit Video DACs
SSAF™ (Super Sub-Alias Filter)
Advanced Power Management Features
PC’98-Compliant (TV Detect with Polling and Auto
Shutdown to Save On Power Consumption)
Low Power DAC Mode
Teletext Insertion Port (PAL-WST)
On-Board Color Bar Generation
On-Board Voltage Reference
Individual DAC ON/OFF Control
Variable DAC Output Current (5 mA–36 mA)
Ultralow Sleep Mode Current
Hue, Brightness, Contrast and Saturation Controls
CGMS (Copy Generation Management System)
WSS (Wide Screen Signalling)
NTSC-M, PAL-M/N, PAL-B/D/G/H/I, PAL-60
YUV Betacam, MII and SMPTE Output Levels
Single 27 MHz Clock Required (؋
2 Oversampling)
80 dB Video SNR
2-Wire Serial MPU Interface (I2C® Compatible and Fast I2C)
Single Supply +5 V or +3.3 V Operation
Small 48-Lead LQFP Package
APPLICATIONS
High Performance DVD Playback Systems, Portable
Video Equipment including Digital Still Cameras and
Laptop PCs, Video Games, PC Video/Multimedia and
Digital Satellite/Cable Systems (Set-Top Boxes/IRD)
32-Bit Direct Digital Synthesizer for Color Subcarrier
Multistandard Video Output Support:
Composite (CVBS)
Component S-Video (Y/C)
Component YUV
GENERAL DESCRIPTION
The ADV7172/ADV7173 is an integrated Digital Video En-
coder that converts digital CCIR-601 4:2:2 8-bit component
video data into a standard analog baseband television signal
compatible with world wide standards.
EuroSCART RGB
There are six DACs available on the ADV7172/ADV7173. In
addition to the Composite output signal there is the facility to
output S-VHS Y/C Video, RGB Video and YUV Video.
Component YUV + CHROMA + LUMA + CVBS
EuroSCART Output RGB + CHROMA + LUMA + CVBS
Programmable Clamping Output Signal
Advanced Programmable Power-On Reset Sequencing
Video Input Data Port Supports:
CCIR-656 4:2:2 8-Bit Parallel Input Format
SMPTE 170M NTSC-Compatible Composite Video
ITU-R BT.470 PAL-Compatible Composite Video
Luma Sharpness Control
The on-board SSAF (Super Sub-Alias Filter), with extended
luminance frequency response and sharp stopband attenuation,
enables studio quality video playback on modern TVs, giving
optimal horizontal line resolution. An additional sharpness
control feature allows extra luminance boost on the frequency
response.
Programmable Luma Filters (Low-Pass [PAL/NTSC],
Notch [PAL/NTSC], Extended [SSAF], CIF and QCIF)
Programmable Chroma Filters (Low-Pass [0.65 MHz,
1.0 MHz, 1.2 MHz and 2.0 MHz], CIF and QCIF)
Programmable VBI (Vertical Blanking Interval)
Programmable Subcarrier Frequency and Phase
Programmable LUMA Delay
An advanced power management circuit enables optimal control
of power consumption in both normal operating modes and
power down or sleep modes. A PC’98-Compliant autodetect
feature has been added to allow the user to determine whether
or not the DACs are correctly terminated. If not, the ADV7172/
ADV7173 flags that they are not connected through the Status
bit and provides the option of automatically powering them
down, thereby reducing power consumption.
CCIR and Square Pixel Operation
Integrated Subcarrier Locking to External Video Source
NOTES
*This device is protected by U.S. Patent Numbers 4,631,603, 4,577,216, 4,819,098 and other intellectual property rights.
1ITU-R and CCIR are used interchangeably in this document (ITU-R has replaced CCIR recommendations).
2The Macrovision anticopy process is licensed for noncommercial home use only, which is its sole intended use in the device. Please contact sales office for latest
Macrovision version available.
SSAF is a trademark of Analog Devices, Inc.
I2C is a registered trademark of Philips Corporation.
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
World Wide Web Site: http://www.analog.com
© Analog Devices, Inc., 1999
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