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ADV7176 の電気的特性と機能

ADV7176のメーカーはAnalog Devicesです、この部品の機能は「Integrated Digital CCIR-601 YCrCb to PAL/NTSC Video Encoder」です。


製品の詳細 ( Datasheet PDF )

部品番号 ADV7176
部品説明 Integrated Digital CCIR-601 YCrCb to PAL/NTSC Video Encoder
メーカ Analog Devices
ロゴ Analog Devices ロゴ 




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ADV7176 Datasheet, ADV7176 PDF,ピン配置, 機能
a
Integrated Digital CCIR-601
YCrCb to PAL/NTSC Video Encoder
ADV7175/ADV7176
FEATURES
Close Captioning Support
CCIR-601 YCrCb to PAL/NTSC Video Encoder
Teletext Support (Passthrough Mode)
Single 27 MHz Clock Required (؋2 Oversampling)
On-Board Color Bar Generation
Pixel Port Supports:
CCIR-656 4:2:2 8-Bit Parallel Input Format
On-Board Voltage Reference
2-Wire Serial MPU Interface (I2C Compatible)
4:2:2 16-Bit Parallel Input Format
+5 V CMOS Monolithic Construction
SMPTE 170M NTSC Compatible Composite Video Output
44-Pin PQFP Thermally Enhanced Package
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
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
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)*
GENERAL DESCRIPTION
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 out-
put 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 load.
(Continued on page 6)
FUNCTIONAL BLOCK DIAGRAM
VAA
RESET
COLOR
DATA
P7–P0
P15–P8
8
4:2:2 TO
4:4:4
INTER-
POLATOR
8
8
YCrCb
TO
YUV
MATRIX
HSYNC
FIELD/VSYNC
BLANK
VIDEO TIMING
GENERATOR
YUV TO
RBG
MATRIX
8
8
8
8
ADD 8
INTER-
8
Y 10
LOW-PASS
SYNC
POLATOR
FILTER
8
ADD 8
BURST
INTER- 8
POLATOR
U 10
LOW-PASS
FILTER
8 ADD 8
BURST
I2C MPU PORT
INTER- 8
POLATOR
V
LOW-PASS
FILTER
REAL-TIME
CONTROL
CIRCUIT
10
10 10
SIN/COS
DDS BLOCK
M
U 10
L
T
I
P
10
L
E
X 10
E
R
10-BIT
DAC
10-BIT
DAC
10-BIT
DAC
10 10-BIT
DAC
ADV7175/ADV7176
VOLTAGE
REFERENCE
CIRCUIT
GREEN/
LUMA/
Y
RED/
CHROMA/
V
BLUE/
COMPOSITE/
U
COMPOSITE
VREF
RSET
COMP
CLOCK
SCLOCK SDATA ALSB
SCRESET/RTC
GND
*This device is protected by U.S. Patent Numbers 4631603, 4577216, 4819098 a nd other intellectual property rights. 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

1 Page





ADV7176 pdf, ピン配列
AC CHARACTERISTICS1
Parameter
Chroma Nonlinear Gain
Chroma Nonlinear Phase
Chroma Nonlinear Phase
Chroma/Luma Intermod
Chroma/Luma Intermod
Chroma/Luma Gain Ineq
Chroma/Luma Delay Ineq
Luminance Nonlinearity
Chroma AM Noise
Chroma PM Noise
Min Typ
0.6
1
1.7
0.2
0.4
0.6
1
0.8
60
59
Max
ADV7175/ADV7176
Units Condition
± % Referenced to 40 IRE
±° NTSC
±° PAL
± % Referenced to 714 mV (NTSC)
± % Referenced to 700 mV (PAL)
±%
ns
±%
dB
dB
TIMING–SPECIFICATIONS2 (VAA = +5 V3, VREF = 1.235 V RSET = 150 . All specifications TMIN to TMAX4 unless otherwise noted)
Parameter
Min Typ Max
Units Condition
MPU PORT1
SCLOCK Frequency
SCLOCK High Pulse Width, t1
SCLOCK Low Pulse Width, t2
Hold Time (Start Condition), t3
Setup Time (Start Condition), t4
Data Setup Time, t5
SDATA, SCLOCK Rise Time, t6
SDATA, SCLOCK Fall Time, t7
Setup Time (Stop Condition), t8
ANALOG OUTPUTS1, 5
Analog Output Delay
DAC Analog Output Skew
0
4.0
4.7
4.0
4.7
250
4.7
5
0
100
1
300
kHz
µs
µs
µs After this period the first clock pulse is generated
µs Relevant for repeated start condition.
ns
µs
ns
µs
ns
ns
CLOCK CONTROL
AND PIXEL PORT6
FCLOCK
Clock High Time t9
Clock Low Time t10
Data Setup Time t11
Data Hold Time t12
Control Setup Time t11
Control Hold Time t12
Digital Output Access Time t13
Digital Output Hold Time t14
Pipeline Delay t15
24.52 27
8
8
3.5
1
4
2
6
37
29.5
24
MHz
ns
ns
ns
ns
ns
ns
ns
ns
Clock Cycles
NOTES
1Guaranteed by characterization.
2TTL input values are 0 to 3 volts, with input rise/fall times 3 ns, measured between the 10% and 90% points. Timing reference points at 50% for inputs and
outputs. Analog Output Load 3 pF.
3± 5% for all versions.
4Temperature range (TMIN to TMAX); 0°C to +70°C.
5Output delay measured from the 50% point of the rising edge of CLOCK to the 50% point of full-scale transition.
6Pixel Port consists of the following inputs:
Pixel Inputs: P15–P0
Pixel Controls: HSYNC, FIELD/VSYNC, BLANK
Clock Input: CLOCK
Specifications subject to change without notice.
REV. A
–3–


3Pages


ADV7176 電子部品, 半導体
ADV7175/ADV7176
(Continued from page 1)
The ADV7175/ADV7176 also supports both a PAL and NTSC
square pixel mode in slave mode.
The video encoder accepts an 8-bit parallel pixel data stream in
CCIR-656 format or a 16-bit parallel data stream. This 4:2:2
data stream is interpolated into 4:4:4 component video (YUV).
The YUV video is interpolated to two times the pixel rate. The
color-difference components (UV) are quadrature modulated
using a subcarrier frequency generated by an on-chip synthesizer
(also running at two times the pixel rate). The two times pixel
rate sampling allows more accurate generation of the subcarrier
because frequency and phase errors are reduced by the higher
sampling rate. The ADV7175/ADV7176 also offers the option to
output the YUV information directly.
The luminance and chrominance components are digitally com-
bined and the resulting composite signal is output via a 10-bit
DAC. Three additional 10-/8-bit DACs are provided to output
S-VHS Y/C Video (10 bits), YUV or RGB Video (8 bits).
The output video frames are synchronized with the incoming
data timing reference codes. Optionally the encoder accepts (and
can generate) HSYNC, VSYNC & FIELD timing signals. These
timing signals can be adjusted to change pulse width and posi-
tion while the part is in the master mode. The encoder requires a
single two times pixel rate (27 MHz) clock for standard operation.
Alternatively the encoder requires 24.54 MHz clock for NTSC
or 29.5 MHz clock for PAL square pixel mode operation. All in-
ternal clocks are generated on-chip. The ADV7175/ADV7176
modes are set up over a two wire serial bidirectional port (I2C
Compatible) with two slave addresses.
Additionally, the ADV7175/ADV7176 allows a subcarrier phase
lock with an external video source and has a color bar generator
on-board.
Functionally the ADV7175 and ADV7176 are the same with
the exception that the ADV7175 can output the Macrovision
(Revision 6.1/7.x) anticopy algorithm.
The ADV7175/ADV7176 is fabricated in a +5 V CMOS pro-
cess. Its monolithic CMOS construction ensures greater func-
tionality with low power dissipation.
The ADV7175/ADV7176 is packaged in a 44-pin thermally en-
hanced PQFP package (patent pending).
The ADV7175/ADV7176 is protected by U.S. Patent Numbers
5,343,196 and 5,442,355 and other intellectual property rights.
DATA PATH DESCRIPTION
For PAL B, D, G, H, I, M, N and NTSC M, N modes, YCrCb
4:2:2 data is input via the CCIR-656 compatible pixel port at a
13.5 MHz data rate. The pixel data is de-multiplexed to form
three data paths. Y has a range of 16 to 235, Cr and Cb have a
range of 128 ± 112. The ADV7175/ADV7176 supports PAL
(B, D, G, H, I, N, M) and NTSC (with and without Pedestal)
standards. The appropriate SYNC, BLANK and burst levels are
added to the YCrCb data. Macrovision antitaping (ADV7175
only) and close-captioning levels are also added to Y and the
resultant data is interpolated to a rate of 27 MHz. The interpo-
lated data is filtered and scaled by three digital FIR filters.
The U and V signals are modulated by the appropriate subcarrier
sine/cosine phases and added together to make up the chromi-
nance signal. The luma (Y) signal can be delayed 1-3 luma
cycles (each cycle is 74 ns) with respect to the chroma signal.
The luma and chroma signals are then added together to make
up the composite video signal. All edges are slew rate limited.
The YCrCb data is also used to generate RGB data with appro-
priate SYNC and BLANK levels. The RGB data is in sychro-
nization with the composite video output. Alternatively analog
YUV data can be generated instead of RGB.
The four 10-bit DACs can be used to output:
1. 10-bit composite video + 8-bit RGB video.
2. 10-bit composite video + 8-bit YUV video.
3. Two 10-bit composite video signals
+ 10-bit LUMA & CHROMA (Y/C) signals.
Alternatively, each DAC can be individually powered off if not
required.
All possible video outputs are illustrated in Appendix 3, 4 and 5.
INTERNAL FILTER RESPONSE
The Y filter supports several different frequency responses in-
cluding two 4.5/5.0 MHz low-pass and PAL/NTSC subcarrier
notch responses. The U and V filters have a 0.6/1 0.3 MHz
low-pass response.
These filter characteristics are illustrated in Figures 3 to 11.
FILTER SELECTION
NTSC
PAL
NTSC
PAL
NTSC/PAL
NTSC
PAL
MR04
0
0
0
0
1
1
1
MR03
0
0
1
1
0
1
1
PASSBAND
PASSBAND
STOPBAND
CUT OFF (MHz) RIPPLE (dB) CUT OFF (MHz)
2.3
0.026
7.5
3.4
0.098
8.0
1.0
0.085
3.57
1.4
0.107
4.43
4.0
0.150
8.0
2.3
0.054
7.5
3.4
0.106
8.0
STOPBAND
ATTENUATION (dB)
>50
>51.3
>27.6
>29.3
>40
>54
>50.3
F3dB
4.2
5.0
2.1
2.7
5.65
4.2
5.0
FILTER SELECTION
NTSC
PAL
Figure 3. Y Filter Specifications
PASSBAND
CUT OFF (MHz)
1.0
1.3
PASSBAND
RIPPLE (dB)
0.085
0.04
STOPBAND
CUT OFF (MHz)
3.6
4.0
STOPBAND
ATTENUATION (dB)
>40
>40
ATTENUATION @
1.3MHz (dB)
0.3
0.02
F3dB
2.05
2.45
Figure 4. UV Filter Specifications
–6–
REV. A

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