ADV7175A Datasheet, PDF (1/52 Pages) Analog Devices – High Quality, 10-Bit, Digital CCIR-601 to PAL/NTSC Video Encoder

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
SMPTE 170M NTSC Compatible Composite Video
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 (I²C Compatible)
Single Supply +5 V or + 3 V Operation
Small 44-Lead PQFP Thermally Enhanced Package
ITU-R BT.470 PAL Compatible Composite Video
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
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
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
GENERAL DESCRIPTION
The ADV7175A/ADV7176A is an integrated digital video en-
coder that converts Digital CCIR-601 4:2:2 8 or 16-bit compo-
nent video data into a standard analog baseband television
(Continued on page 11)
FUNCTIONAL BLOCK DIAGRAM
TTX
TTXREQ
V_AA
COLOR
DATA
P7–P0
P15–P8
HSYNC
FIELD/VSYNC
BLANK
TELETEXT
INSERTION
BLOCK
8
4:2:2 TO ₈
4:4:4
INTER-
POLATOR
8
YCrCb
TO
YUV
MATRIX
VIDEO TIMING
GENERATOR
8
ADD ⁸
INTER-
8
Y
LOW-PASS
SYNC
POLATOR
FILTER
YUV TO
RBG
MATRIX
10
M
U
L
10
T
I
P ¹⁰
L
E
X ¹⁰
E
R
10-BIT
DAC
10-BIT
DAC
10-BIT
DAC
8
ADD ⁸
INTER-
8
U
10
LOW-PASS
BURST
POLATOR
FILTER
8
ADD ⁸
BURST
INTER- ⁸
POLATOR
V
10
LOW-PASS
FILTER
10 _10-BIT
DAC
ADV7175A/ADV7176A
I²C MPU PORT
REAL-TIME
CONTROL
CIRCUIT
10
10
SIN/COS
DDS BLOCK
VOLTAGE
REFERENCE
CIRCUIT
DAC D (PIN 27)
DAC C (PIN 26)
DAC B (PIN 31)
DAC A (PIN 32)
V_REF
R_SET
COMP
CLOCK _RESET SCLOCK SDATA ALSB
SCRESET/RTC
GND
*Protected by U.S. patents numbers 5,343,196 and 5,442,355 and other intellectual property rights.
**This device is protected by U.S. Patent Numbers 4631603, 4577216, 4819098 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).
REV. B
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.
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© Analog Devices, Inc., 1998