Digital PAL/NTSC Video Encoder with 10-Bit
SSAF™ and Advanced Power Management
a
ADV7170/ADV7171*
Programmable Chroma Filters (Low-Pass [0.65 MHz,
FEATURES
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
Individual ON/OFF Control of Each DAC
CCIR and Square Pixel Operation
ITU-R BT601/656 YCrCb to PAL/NTSC Video Encoder
High Quality 10-Bit Video DACs
SSAF (Super Sub-Alias Filter)
Advanced Power Management Features
CGMS (Copy Generation Management System)
WSS (Wide Screen Signalling)
Integrated Subcarrier Locking to External Video Source
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 (ADV7170 Only)**
Closed Captioning Support
Simultaneous Y, U, V, C Output Format
NTSC-M, PAL-M/N, PAL-B/D/G/H/I, PAL-60
Single 27 MHz Clock Required (؋
2 Oversampling)
80 dB Video SNR
32-Bit Direct Digital Synthesizer for Color Subcarrier
Multistandard Video Output Support:
Composite (CVBS)
Component S-Video (Y/C)
Component YUV and RGB
EuroSCART Output (RGB + CVBS/LUMA)
Component YUV + CHROMA
Video Input Data Port Supports:
Teletext Insertion Port (PAL-WST)
On-Board Color Bar Generation
On-Board Voltage Reference
2-Wire Serial MPU Interface (I2C® Compatible and Fast I2C)
Single Supply +5 V or +3.3 V Operation
Small 44-Lead PQFP/TQFP Packages
CCIR-656 4:2:2 8-Bit Parallel Input Format
4:2:2 16-Bit Parallel Input Format
APPLICATIONS
SMPTE 170M NTSC-Compatible Composite Video
ITU-R BT.470 PAL-Compatible Composite Video
Programmable Simultaneous Composite
and S-Video or RGB (SCART)/YUV Video Outputs
Programmable Luma Filters (Low-Pass [PAL/NTSC])
Notch, Extended (SSAF, CIF and QCIF)
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)
FUNCTIONAL BLOCK DIAGRAM
TTXREQ
TTX
M
10
U
POWER
MANAGEMENT
CONTROL
10
10-BIT
L
CGMS & WSS
INSERTION
BLOCK
TELETEXT
INSERTION
BLOCK
DACD(PIN 27)
DAC
T
YUV TO
RBG
MATRIX
V
AA
10
I
(SLEEP MODE)
10
10
10-BIT
DAC
P
L
E
X
E
R
DACC(PIN 26)
DACB(PIN 31)
10
RESET
10-BIT
DAC
10
8
PROGRAMMABLE
LUMINANCE
FILTER
9
8
Y
9
COLOR
DATA
P7–P0
INTER-
ADD
POLATOR
SYNC
4:2:2 TO
YCrCb
TO
YUV
4:4:4
INTER-
POLATOR
8
8
10
10
U
V
U
V
8
8
8
8
PROGRAMMABLE
CHROMINANCE
FILTER
P15–P8
10
INTER-
POLATOR
ADD
MATRIX
10-BIT
DAC
DACA(PIN 32)
BURST
8
8
ADV7170/ADV7171
10
10
HSYNC
FIELD/VSYNC
BLANK
VIDEO TIMING
GENERATOR
REAL-TIME
CONTROL
CIRCUIT
V
REF
SIN/COS
DDS BLOCK
VOLTAGE
REFERENCE
CIRCUIT
2
I C MPU PORT
R
SET
COMP
CLOCK
SCLOCK SDATA
ALSB
SCRESET/RTC
GND
*Protected by U.S. Patent Numbers 5,343,196 and 5,442,355 and other intellectual property rights.
**This device is protected by U.S. Patent Numbers 4,631,603, 4,577,216, 4,819,098 and other intellectual property rights. The 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.
NOTE: ITU-R and CCIR are used interchangeably in this document (ITU-R has replaced CCIR recommendations).
SSAF is a trademark of Analog Devices, Inc.
I2C is a registered trademark of Philips Corporation.
REV. 0
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., 1998
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