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參數資料
| 型號： | ADV7178 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Integrated Digital CCIR-601 to PAL/NTSC Video Encoder |
| 中文描述： | 綜合數字無線電咨詢委員會，601到PAL / NTSC制式視頻編碼器 |
| 文件頁數： | 1/38頁 |
| 文件大小： | 280K |
| 代理商： | ADV7178 |
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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.
a
ADV7177/ADV7178
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., 1998
Integrated Digital CCIR-601
to PAL/NTSC Video Encoder
FEATURES
ITU-R BT601/656 YCrCb to PAL/NTSC Video Encoder
High Quality 9-Bit Video DACs
Integral Nonlinearity <1 LSB at 9 Bits
NTSC-M, PAL-M/N, PAL-B/D/G/H/I
Single 27 MHz Crystal/Clock Required (
3
2 Oversampling)
75 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
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
ITU-R BT.470 PAL-Compatible Composite Video
Full Video Output Drive or Low Signal Drive Capability
34.7 mA max into 37.5
V
(Doubly-Terminated 75R)
5 mA min with External Buffers
Programmable Simultaneous Composite and S-VHS
(VHS) 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
Color Signal Control/Burst Signal Control
Interlaced/Noninterlaced Operation
Complete On-Chip Video Timing Generator
OSD Support (AD7177 Only)
Programmable Multimode Master/Slave Operation
Macrovision Antitaping Rev 7.01 (ADV7178 Only)**
Closed Captioning Support
Onboard Voltage Reference
2-Wire Serial MPU Interface (I
2
C
Compatible)
Single Supply +5 V or +3 V Operation
Small 44-Lead PQFP Package
Synchronous 27 MHz/13.5 MHz Clock O/P
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 ADV7177/ADV7178 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
FUNCTIONAL BLOCK DIAGRAM
OSD_EN
OSD_0
OSD_1
OSD_2
P7–P0
P15–P8
COLOR
DATA
ADV7177
ONLY
4:2:2 TO
4:4:4
INTER-
POLATOR
8
8
8
8
ADD
BURST
8
INTER-
POLATOR
8
V
LOW-PASS
FILTER
9
9
9
9
9
SIN/COS
DDS BLOCK
YUV TO
RBG
MATRIX
M
U
L
T
I
P
L
E
X
E
R
9
9
9
9-BIT
DAC
9-BIT
DAC
9-BIT
DAC
DAC C (PIN 26)
DAC B (PIN 27)
DAC A (PIN 31)
ADV7177/ADV7178
VOLTAGE
REFERENCE
CIRCUIT
VIDEO TIMING
GENERATOR
I
2
C MPU PORT
CLOCK
CLOCK
CLOCK/2
RESET
SCLOCK SDATA ALSB
GND
V
REF
R
SET
COMP
V
AA
HSYNC
FIELD/
VSYNC
BLANK
8
ADD
BURST
8
INTER-
POLATOR
8
U
LOW-PASS
FILTER
8
ADD
SYNC
8
INTER-
POLATOR
8
Y
LOW-PASS
FILTER
YCrCb
TO
YUV
MATRIX
*
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).
I
2
C is a registered trademark of Philips Corporation.
(Continued on page 11)
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