Pioneer DV-45A Service Manual page 102

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7 AD7172KST (DVDM ASSY : IC801)
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3 7 63 1515 0
• Digital PAL/NTSC Video Encoder with Six DACs (10-bits), Color Control and Enhanced Power Management
A
¶ Pin Arrangement
48 47 46 45 44 43 42 41 40 39 38 37
V
1
AA
P0
2
P1
3
P2
4
B
P3
5
P4
6
P5
7
P6
8
P7
9
CSO_HSO
10
V
11
AA
GND
12
13 14 15 16 17 18 19 20 21 22 23 24
C
¶ Block Diagram
TE
L 13942296513
48 43
HSYNC 14
FIELD/
15
VSYNC
BLANK 16
D
RESET 44
TTX 41
TELETEXT
INSERTION BLOCK
40
TTXREQ
8
4:2:2 TO
P0-P7
2
4:4:4 8
(COLOR |
INTER-
9
DATA)
POLATOR
8
E
¶ Pin Function
N . o N a m e
1 V
A A
www
2 P 0
3 P 1
4 P 2
5 P 3
F
102
1
http://www.xiaoyu163.com
2
36
35
34
33
32
31
30
29
28
27
26
25
10 45 14 20
I
VIDEO TIMING
GENERATOR
BRIGHTNESS AND
CONTRAST CONTROL
ADD SYNC
Y 8
INTERPOLATOR
VCrCb
TO
U
SATURATION CONTROL
YUV
MATRIX 8
ADD BURST
V 8
INTERPOLATOR
CONTROL CIRCUIT
SCRESET/RTC
/ I O
P P o w r e S u p p y l + ( 3 V o t + 5 ) V
x ao
I 8 b - t i 4 : 2 : 2 M u t l p i e l x e d Y C
. i
2
http://www.xiaoyu163.com
3
COMP1
DAC A
V
AA
DAC B
V
AA
GND
V
AA
DAC C
DACD
V
AA
GND
DAC E
Q Q
3 6 7
21 17
2
C MPU PORT
LUMA
PROGRAMMABLE
10
FILTER
SHARPNESS
FILTER
10
MODULATOR
PROGRAMMABLE
CHROMA
10
FILTER
REAL-TIME
39 12,13,18,26,31,47
GND
P n i F u n t c o i
u163
y
r C b P x i l e P o t r P ( 7 P - ) 0 P 0 e r p e r s
DV-45A
3
2 9 9 4
8
1 3 1 5 0 5 8 2 9
10 10
10BIT
YUV TO
DAC
RGB
MATRIX
10 10 10BIT
DAC
YUV
LEVEL
10 10 10BIT
CONTROL
BLOCK DAC
DAC
CONTROL
BLOCK
10 10BIT
DAC
10
10 10BIT
10
DAC
HUE
CONTROL
10
10 10BIT
DAC
10 10
DAC
SIN/COS
CONTROL
DDS SLOCK
BLOCK
n
m
co
e n s t h t e L S B
.
4
2 8
9 9
9 4 2 8 9 9
35 DAC A
DAC B
33
DAC C
29
37 V
REF
22 R
ESET2
23 COMP2
DAC E
25
DAC F
24
DAC D
28
38 R
ESET1
36 COMP1
4