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IC BLOCK DIAGRAMS AND DESCRIPTIONS
ADV7172KSTZ(Digital PAL/NTSC Vidoe Encoder with Six DACs)
CLOCK
PAL NTSC
FIELD/
VIDEO TIMING
GENERATOR
TTX
TELETEXT
INSERTION BLOCK
TTXREQ
V
AA
8
P0
YCrCb
4:2:2 TO
8
TO
4:4:4
COLOR
YUV
INTER-
DATA
MATRIX
POLATOR
P7
8
FUNCTIONAL BLOCK DIAGRAM
CLAMP
SCLOCK SDATA
2
I
C MPU PORT
BRIGHTNESS AND
CONTRAST CONTROL
10
+
ADD SYNC
Y
8
+
INTERPOLATOR
U
10
SATURATION CONTROL
+
8
ADD BURST
10
+
V
8
INTERPOLATOR
REAL-TIME
CONTROL CIRCUIT
SCRESET/RTC
PIN CONFIGURATION
48 47 46 45 44
43 42 41 40
1
V
AA
PIN 1
2
P0
IDENTIFIER
3
P1
P2
4
P3
5
ADV7172
6
P4
7
P5
TOP VIEW
P6
8
P7
9
10
CSO_HSO
V
11
AA
GND
12
13 14 15 16 17 18 19 20 21 22 23 24
ALSB
YUV TO
RBG
MATRIX
+
YUV
LEVEL
CONTROL
BLOCK
LUMA
PROGRAMMABLE
FILTER
+
SHARPNESS
FILTER
MODULATOR
PROGRAMMABLE
+
CHROMA
HUE
FILTER
CONTROL
10
10
SIN/COS
DDS BLOCK
GND
39 38 37
36
COMP1
35
DAC A
V
34
AA
33
DAC B
32
V
AA
31
GND
V
30
AA
29
DAC C
28
DAC D
27
V
AA
26
GND
25
DAC E
TX-SR55
M
10
10
U
10-BIT
DAC A
L
DAC
T
10
I
10
10-BIT
DAC B
P
DAC
L
E
10
10
10-BIT
X
DAC C
DAC
E
R
V
DAC
REF
CONTROL
R
SET2
M
BLOCK
COMP2
U
L
10
10-BIT
T
DAC E
DAC
10
I
P
10
L
10-BIT
10
DAC F
E
DAC
X
10
10
E
10-BIT
DAC D
R
DAC
DAC
CONTROL
R
SET1
BLOCK
COMP1
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