Digital PAL/NTSC Video Encoder with 10-Bit
SSAF™ and Advanced Power Management
ADV7170/ADV7171
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. 7.1 (ADV7170 only)3
Closed captioning support
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 MQFP/TQFP packages
Industrial temperature grade = −40°C to +85°C4
FEATURES
ITU-R1 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)
Simultaneous Y, U, V, C output format
NTSC M, PAL M/N2, PAL B/D/G/H/I, PAL60
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)
Components S-Video (Y/C), YUV, and RGB
EuroSCART output (RGB + CVBS/LUMA)
Component YUV + CHROMA
Video input data port supports
CCIR-656 4:2:2 8-bit parallel input format
4:2:2 16-bit parallel input format
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)
Programmable chroma filters (low-pass [0.65 MHz, 1.0 MHz,
1.2 MHz and 2.0 MHz], CIF and QCIF)
Programmable VBI (vertical blanking interval)
Programmable subcarrier frequency and phase
APPLICATIONS
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)
1
ITU-R and CCIR are used interchangeably in this document (ITU-R has
replaced CCIR recommendations).
Throughout the document N is referenced to PAL- Combination -N.
3
Protected by U.S. Patents 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.
4
Refer to Table 8 for complete operating details.
2
VAA
POWER
MANAGEMENT
CONTROL
(SLEEP MODE)
TTX
10
CGMS AND WSS
INSERTION
BLOCK
TELETEXT
INSERTION
BLOCK
YUV TO
RGB
MATRIX
10
RESET
COLOR
DATA
P7–P0
P15–P8
HSYNC
FIELD/VSYNC
BLANK
10
8
Y 8
4:2:2 TO
8
4:4:4
INTERPOLATOR
8
YCrCb
TO
YUV U 8
MATRIX
V 8
VIDEO TIMING
GENERATOR
CLOCK
ADD
SYNC
9
8
ADD
BURST 8
INTERPOLATOR
9
8
INTERPOLATOR 8
REAL-TIME
CONTROL
CIRCUIT
I2C MPU PORT
SCLOCK
SDATA
PROGRAMMABLE
LUMINANCE
FILTER
10
PROGRAMMABLE
CHROMINANCE 10
FILTER
ALSB
SCRESET/RTC
10
M
U 10
L
T
I 10
P
L
E
X 10
E
R
10-BIT
DAC
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)
U
10
V
10
10
SIN/COS
DDS BLOCK
ADV7170/ADV7171
VOLTAGE
REFERENCE
CIRCUIT
GND
VREF
RSET
COMP
00221-001
TTXREQ
Figure 1. Functional Block Diagram
Protected by U.S. Patents 5,343,196; 5,442,355; and other intellectual property rights.
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 that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective companies.
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© 2005 Analog Devices, Inc. All rights reserved.
