Harman Kardon AVR435 Service Manual page 83

AVR435/635
Digital PAL/NTSC Video Encoder with Six DACs (10 Bits), Color Control and Enhanced Power Management
ADV7172/ADV7173
CLOCK PAL NTSC
FIELD/
TTX
TELETEXT
INSERTION BLOCK
TTXREQ
V
AA
P0
4:2:2 TO
4:4:4
COLOR
INTER-
DATA
POLATOR
P7
ADV7172/ADV7173
48 47 46 45 44
1
V
AA
2
P0
P1 3
P2 4
5
P3
6
P4
P5 7
8
P6
9
P7
10
V 11
AA
GND 12
13 14 15 16 17 18 19 20 21 22 23 24
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the ADV7172/ADV7173 features proprietary ESD protection circuitry, permanent
damage may occur on devices subjected to high-energy electrostatic discharges. Therefore,
proper ESD precautions are recommended to avoid performance degradation or loss of
functionality.
FUNCTIONAL BLOCK DIAGRAM
CLAMP
VIDEO TIMING
GENERATOR
BRIGHTNESS AND
CONTRAST CONTROL
+
ADD SYNC
8 Y
8
+
INTERPOLATOR
YCrCb
8
TO U
SATURATION CONTROL
YUV
+
8
MATRIX
ADD BURST
8 V +
8
INTERPOLATOR
43 42 41 40 39 38 37
PIN 1
IDENTIFIER
ADV7172/ADV7173
TOP VIEW
(Not to Scale)
SCLOCK SDATA ALSB
2
I C MPU PORT
LUMA
PROGRAMMABLE
10
FILTER
+
SHARPNESS
FILTER
10
PROGRAMMABLE
CHROMA
10
FILTER
REAL-TIME
CONTROL CIRCUIT
SCRESET/RTC GND
36 COMP1
35 DAC A
V
34
AA
DAC B
33
32 V
AA
31 GND
30 V
AA
29 DAC C
DAC D
28
V
27
AA
26 GND
25 DAC E
83
M
10 10
U
10-BIT
YUV TO
L
RBG
T
MATRIX
10 I 10
+ 10-BIT
P
YUV
L
LEVEL
E
10 10
CONTROL
10-BIT
X
BLOCK
E
R
DAC
CONTROL
M
BLOCK
U
L
10
10-BIT
T
10 I
P
10
MODULATOR
L 10-BIT
10
+
E
HUE
X
10 10
CONTROL
E
10-BIT
R
10 10
DAC
SIN/COS
CONTROL
DDS BLOCK
BLOCK
ORDERING GUIDE
WARNING!
harman/kardon
DAC A
DAC
DAC B
DAC
DAC C
DAC
V
REF
R
SET2
COMP2
DAC E
DAC
DAC F
DAC
DAC D
DAC
R
SET1
COMP1
ESD SENSITIVE DEVICE