a
High Quality, 10-Bit, Digital CCIR-601
to PAL/NTSC Video Encoder
ADV7175A/ADV7176A*
FEATURES
ITU-R BT601/656 YCrCb to PAL/NTSC Video Encoder
High Quality 10-Bit Video DACs
Integral Nonlinearity <1 LSB at 10 Bits
NTSC-M, PAL-M/N, PAL-B/D/G/H/I
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)
Video Input Data Port Supports:
CCIR-656 4:2:2 8-Bit Parallel Input Format
4:2:2 16-Bit Parallel Input Format
Full Video Output Drive or Low Signal Drive Capability
34.7 mA max into 37.5 ⍀ (Doubly-Terminated 75R)
5 mA min with External Buffers
Programmable Simultaneous Composite
and S-Video Y/C or RGB (SCART)/YUV Video Outputs
Programmable Luma Filters (Low-Pass/Notch/Extended)
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
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 (ADV7175A Only)**
Closed Captioning Support
Teletext Insertion Port (PAL-WST)
Onboard Color Bar Generation
Onboard Voltage Reference
2-Wire Serial MPU Interface (I 2C Compatible)
Single Supply 5 V or 3 V Operation
Small 44-Lead MQFP Thermally Enhanced Package
APPLICATIONS
MPEG-1 and MPEG-2 Video, DVD, Digital Satellite/
Cable Systems (Set Top Boxes/IRDs), Digital TVs,
CD Video/Karaoke, Video Games, PC Video/Multimedia
GENERAL DESCRIPTION
The ADV7175A/ADV7176A is an integrated digital video encoder
that converts Digital CCIR-601 4:2:2 8 or 16-bit component
video data into a standard analog baseband television signal
(Continued on page 11)
FUNCTIONAL BLOCK DIAGRAM
TTX
TTXREQ
TELETEXT
INSERTION
BLOCK
M
U
10
L
T
I
P 10
L
E
X 10
E
R
YUV TO
RBG
MATRIX
VAA
8
8
COLOR
DATA
P7–P0
P15–P8
4:2:2 TO 8
4:4:4
INTERPOLATOR
YCrCb
TO
YUV
MATRIX
8
HSYNC
FIELD/VSYNC
BLANK
8
8
ADD
SYNC
ADD
BURST
ADD
BURST
8
8
8
INTERPOLATOR
INTERPOLATOR
INTERPOLATOR
8
Y
LOW-PASS
FILTER
8
U
10
LOW-PASS
FILTER
8
10
10
V
10
LOW-PASS
FILTER
CLOCK
I2C MPU PORT
RESET SCLOCK SDATA ALSB
REAL-TIME
CONTROL
CIRCUIT
SCRESET/RTC
DAC D (PIN 27)
10-BIT
DAC
DAC C (PIN 26)
10-BIT
DAC
DAC B (PIN 31)
10-BIT
DAC
DAC A (PIN 32)
ADV7175A/ADV7176A
10
VIDEO TIMING
GENERATOR
10-BIT
DAC
10
VOLTAGE
REFERENCE
CIRCUIT
SIN/COS
DDS BLOCK
VREF
RSET
COMP
GND
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).
REV. C
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
World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2000
