a
Integrated Digital CCIR-601
YCrCb to PAL/NTSC Video Encoder
ADV7175/ADV7176
Close Captioning Support
Teletext Support (Passthrough Mode)
On-Board Color Bar Generation
On-Board Voltage Reference
2-Wire Serial MPU Interface (I2C Compatible)
+5 V CMOS Monolithic Construction
44-Pin PQFP Thermally Enhanced Package
FEATURES
CCIR-601 YCrCb to PAL/NTSC Video Encoder
Single 27 MHz Clock Required (؋2 Oversampling)
Pixel Port Supports:
CCIR-656 4:2:2 8-Bit Parallel Input Format
4:2:2 16-Bit Parallel Input Format
SMPTE 170M NTSC Compatible Composite Video Output
CCIR624/CCIR601 PAL Compatible Composite Video Output
SCART/PeriTV Support
YUV Output Mode
Simultaneous Composite and S-VHS Y/C or RGB YUV
Video Outputs
Programmable Luma Filters (Low-Pass/Notch)
Square Pixel Support (Slave Mode)
Allows Subcarrier Phase Locking with External Video
Source
10-Bit DAC Resolution for Encoded Video Channels
8-Bit DAC Resolution for RGB Output
YUV Interpolation for Accurate Subcarrier Construction
Programmable Subcarrier Frequency and Phase
Programmable LUMA Delay
Color Signal Control/Burst Signal Control
Interlaced/Noninterlaced Operation
Complete On-Chip Video Timing Generator
Master/Slave Operation Supported
Master Mode Timing Programmability
Macrovision Antitaping Facility Rev 6.1/7.x (ADV7175 Only)*
OBS
APPLICATIONS
MPEG-1 and MPEG-2 Video
DVD
Digital Satellite/Cable Systems (Set Top Boxes/IRDs)
Video Games
CD Video/Karaoke
Professional Studio Quality
PC Video/Multimedia
OLE
GENERAL DESCRIPTION
TE
The ADV7175/ADV7176 is an integrated digital video encoder
that converts Digital CCIR-601 4:2:2 component video data into a
standard analog baseband television signal compatible with world
wide standards NTSC, PAL B/D/G/H/I, PAL M or PAL N. In
addition to the composite output signal, there is the facility to output S-VHS Y/C video, YUV or RGB video. The Y/C, YUV or
RGB format is simultaneously available at the analog outputs with
the composite video signal. Each analog output generates a
standard video-level signal into a doubly terminated 75 Ω load.
(Continued on page 6)
FUNCTIONAL BLOCK DIAGRAM
M
U 10
L
T
I
P 10
L
E
X 10
E
R
8
VAA
YUV TO
RBG
MATRIX
RESET
8
8
8
8
COLOR
DATA
P7–P0
P15–P8
4:2:2 TO
4:4:4
INTERPOLATOR
8
YCrCb
TO
YUV
MATRIX
8
8
8
ADD
SYNC
ADD
BURST
ADD
BURST
8
8
8
INTERPOLATOR
INTERPOLATOR
INTERPOLATOR
8
Y
LOW-PASS
FILTER
10
8
U
LOW-PASS
FILTER
8
10
10
HSYNC
FIELD/VSYNC
VIDEO TIMING
GENERATOR
REAL-TIME
CONTROL
CIRCUIT
I2C MPU PORT
BLANK
CLOCK
SCLOCK SDATA ALSB
10-BIT
DAC
GREEN/
LUMA/
Y
RED/
CHROMA/
V
10-BIT
DAC
BLUE/
COMPOSITE/
U
10-BIT
DAC
COMPOSITE
10
10
V
LOW-PASS
FILTER
10-BIT
DAC
SCRESET/RTC
ADV7175/ADV7176
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 devic e. Please contact sales office for latest Macrovision version available.
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.
© Analog Devices, Inc., 1996
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703