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IC BLOCK DIAGRAMS AND DESCRIPTION
ADV7172KSTZ(Digital PAL/NTSC Vidoe Encoder with Six DACs)
CLOCK
PAL NTSC
FIELD/
TTX
TELETEXT
INSERTION BLOCK
TTXREQ
V
AA
8
P0
4:2:2 TO
8
4:4:4
COLOR
INTER-
DATA
POLATOR
P7
8
TE
L 13942296513
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.
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FUNCTIONAL BLOCK DIAGRAM
CLAMP
SCLOCK SDATA
2
VIDEO TIMING
I
GENERATOR
BRIGHTNESS AND
CONTRAST CONTROL
+
ADD SYNC
Y
8
+
INTERPOLATOR
YCrCb
TO
U
SATURATION CONTROL
YUV
+
8
MATRIX
ADD BURST
+
V
8
INTERPOLATOR
CONTROL CIRCUIT
SCRESET/RTC
PIN CONFIGURATION
48 47 46 45 44
1
V
AA
PIN 1
2
P0
IDENTIFIER
3
P1
P2
4
P3
5
6
P4
7
P5
P6
8
P7
9
10
CSO_HSO
V
11
AA
GND
12
13 14 15 16 17 18 19 20 21 22 23 24
x
ao
y
i
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8
ALSB
C MPU PORT
LUMA
PROGRAMMABLE
10
FILTER
+
SHARPNESS
FILTER
10
MODULATOR
PROGRAMMABLE
CHROMA
10
FILTER
10
REAL-TIME
GND
Q Q
3
6 7
1 3
43 42 41 40
39 38 37
36
COMP1
35
DAC A
V
34
AA
33
DAC B
32
V
AA
ADV7172
31
GND
V
30
AA
TOP VIEW
29
DAC C
28
DAC D
27
V
AA
26
GND
25
DAC E
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.
2 9
9 4
2 8
M
10
10
U
10-BIT
YUV TO
L
DAC
RBG
T
MATRIX
10
I
10
+
10-BIT
P
YUV
DAC
L
LEVEL
E
10
10
CONTROL
10-BIT
X
BLOCK
DAC
E
R
DAC
CONTROL
M
BLOCK
U
L
10
10-BIT
T
DAC
10
I
P
10
L
10-BIT
10
+
E
DAC
HUE
X
10
10
CONTROL
E
10-BIT
R
DAC
10
DAC
SIN/COS
CONTROL
DDS BLOCK
BLOCK
1 5
0 5
8
2 9
9 4
m
co
DTR-4.5
9 9
DAC A
DAC B
DAC C
V
REF
R
SET2
COMP2
DAC E
DAC F
DAC D
R
SET1
COMP1
2 8
9 9
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