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ADV7170 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADV7170
Beschreibung Digital PAL/NTSC Video Encoder
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 30 Seiten
ADV7170 Datasheet, Funktion
Digital PAL/NTSC Video Encoder with 10-Bit
SSAF™ and Advanced Power Management
ADV7170/ADV7171
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
TTXREQ
TTX
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
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).
2 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.
VAA
RESET
COLOR
DATA
P7–P0
P15–P8
HSYNC
FIELD/VSYNC
BLANK
POWER
MANAGEMENT
CONTROL
(SLEEP MODE)
CGMS AND WSS
INSERTION
BLOCK
TELETEXT
INSERTION
BLOCK
YUV TO
RGB
MATRIX
8
4:2:2 TO
4:4:4 8
INTER-
POLATOR 8
Y8
YCrCb
TO
YUV
U8
MATRIX V 8
ADD 9
SYNC
8
ADD
BURST 8
INTER- 9
POLATOR
8
INTER-
POLATOR 8
PROGRAMMABLE
LUMINANCE
FILTER
10
PROGRAMMABLE
CHROMINANCE 10
FILTER
10
U
V
VIDEO TIMING
GENERATOR
I2C MPU PORT
REAL-TIME
CONTROL
CIRCUIT
10 10
SIN/COS
DDS BLOCK
M
10
U 10
L
T
10-BIT
DAC
10
I
P
10
10-BIT
10
L
E
DAC
X 10
E
R
10-BIT
DAC
10 10-BIT
DAC
ADV7170/ADV7171
VOLTAGE
REFERENCE
CIRCUIT
DAC D (PIN 27)
DAC C (PIN 26)
DAC B (PIN 31)
DAC A (PIN 32)
VREF
RSET
COMP
CLOCK
SCLOCK SDATA ALSB
SCRESET/RTC
Figure 1. Functional Block Diagram
Protected by U.S. Patents 5,343,196; 5,442,355; and other intellectual property rights.
GND
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 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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2002–2009 Analog Devices, Inc. All rights reserved.






ADV7170 Datasheet, Funktion
ADV7170/ADV7171
DYNAMIC SPECIFICATIONS
VAA = 5 V ± 5%1, VREF = 1.235 V, RSET = 150 Ω. All specifications TMIN to TMAX2, unless otherwise noted.
Table 3.
Parameter
Differential Gain3, 4
Differential Phase3, 4
Differential Gain3, 4
Differential Phase3, 4
SNR3, 4(Pedestal)
SNR3, 4(Pedestal)
SNR3, 4(Ramp)
SNR3, 4(Ramp)
Hue Accuracy3, 4
Color Saturation Accuracy3, 4
Chroma Nonlinear Gain3, 4
Chroma Nonlinear Phase3 4
Chroma/Luma Intermod3, 4
Chroma/Luma Gain Inequality3, 4
Chroma/Luma Delay Inequality3, 4
Luminance Nonlinearity3, 4
Chroma AM Noise3, 4
Chroma PM Noise3, 4
Conditions1
Normal power mode
Normal power mode
Lower power mode
Lower power mode
RMS
Peak periodic
RMS
Peak periodic
Referenced to 40 IRE
Min Typ Max
0.3 0.7
0.4 0.7
1.0 2.0
1.0 2.0
80
70
60
58
0.7 1.2
0.9 1.4
0.6
0.3 0.5
0.2 0.4
1.0 1.4
0.5 2.0
0.8 1.4
82 85
79 81
1 The min/max specifications are guaranteed over this range. The min/max values are typical over 4.75 V to 5.25 V.
2 Ambient temperature range TMIN to TMAX: −40°C to +85°C. The die temperature, TJ, must always be kept below 110°C.
3 Guaranteed by characterization.
4 These specifications are for the low-pass filter only and are guaranteed by design.
VAA = 3.0 V to 3.6 V1, VREF = 1.235 V, RSET = 150 Ω. All specifications TMIN to TMAX2, unless otherwise noted.
Table 4.
Parameter
Differential Gain3
Differential Phase3
Differential Gain3
Differential Phase3
SNR3 (Pedestal)
SNR3 (Pedestal)
SNR3 (Ramp)
SNR3 (Ramp)
Hue Accuracy3
Color Saturation Accuracy3
Luminance Nonlinearity3, 4
Chroma AM Noise3, 4
Chroma PM Noise3, 4
Chroma Nonlinear Gain3, 4
Chroma Nonlinear Phase3, 4
Chroma/Luma Intermod3, 4
Conditions1
Normal power mode
Normal power mode
Lower power mode
Lower power mode
RMS
Peak periodic
RMS
Peak periodic
Referenced to 40 IRE
Min Typ Max
1.0
0.5
0.6
0.5
78
70
60
58
1.0
1.0
1.4
80
79
0.6
0.3 0.5
0.2 0.4
1 The min/max specifications are guaranteed over this range. The min/max values are typical over 4.75 V to 5.25 V.
2 Ambient temperature range TMIN to TMAX: −40°C to +85°C. The die temperature, TJ, must always be kept below 110°C.
3 Guaranteed by characterization.
4 These specifications are for the low-pass filter only and are guaranteed by design. For other internal filters, see Table 10.
Rev. C | Page 6 of 64
Unit
%
Degrees
%
Degrees
dB rms
dB p-p
dB rms
dB p-p
Degrees
%
±%
±Degrees
±%
±%
ns
±%
dB
dB
Unit
%
Degrees
%
Degrees
dB rms
dB p-p
dB rms
dB p-p
Degrees
%
±%
dB
dB
±%
±Degrees
±%

6 Page









ADV7170 pdf, datenblatt
ADV7170/ADV7171
Pin No.
35
36
37
44
Mnemonic
SCRESET/RTC
TTXREQ
TTX
CLOCK
Input/
Output
I
O
I
I
Description
This pin can be configured as an input by setting MR22 and MR21 of Mode Register 2.
It can be configured as a subcarrier reset pin, in which case a low-to-high transition on this
pin resets the subcarrier to Field 0. Alternatively, it may be configured as a real-time control
(RTC) input.
Teletext Data Request Signal. Defaults to GND when teletext not selected. Enables
backward compatibility to ADV7175/ADV7176.
Teletext Data. Defaults to VAA when teletext not selected. Enables backward compatibility
to ADV7175/ADV7176.
TTL Clock Input. Requires a stable 27 MHz reference clock for standard operation.
Alternatively, a 24.5454 MHz (NTSC) or 29.5 MHz (PAL) can be used for square pixel
operation.
Rev. C | Page 12 of 64

12 Page





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