Pioneer DV-656A-S Service Manual page 101

5
7 AD7172KST (DVDM ASSY : IC801)
• Digital PAL/NTSC Video Encoder with Six DACs (10-bits), Color Control and Enhanced Power Management
¶ Pin Arrangement
48 47 46 45 44 43 42 41 40 39 38 37
V
1
AA
P0
2
P1
3
P2
4
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
¶ Block Diagram
48 43
HSYNC
14
FIELD/
VIDEO TIMING
15
VSYNC
GENERATOR
BLANK 16
RESET 44
TTX 41
TELETEXT
INSERTION BLOCK
TTXREQ 40
8
VCrCb
4:2:2 TO
P0-P7
2 TO
4:4:4 8
(COLOR | YUV
INTER-
9 MATRIX
DATA) POLATOR
8
¶ Pin Function
N . o N a m e / I O
1 V P P
A A
2 P 0
3 P 1
I 8
4 P 2
5 P 3
5
6
COMP1
36
DAC A
35
V
34
AA
DAC B
33
V
32
AA
GND
31
V
30
AA
DAC C
29
DACD
28
V
27
AA
GND
26
DAC E
25
10 45 14 20 21
2
I C MPU PORT
BRIGHTNESS AND
CONTRAST CONTROL
ADD SYNC
Y 8
INTERPOLATOR
U
SATURATION CONTROL
8
ADD BURST
V 8
INTERPOLATOR
REAL-TIME
CONTROL CIRCUIT
39
SCRESET/RTC
o w r e S u p p y l + ( 3 V o t + 5 ) V
b - t i 4 : 2 : 2 M u t l p i e l x e d Y C r C b P
6
7
17
YUV TO
RGB
MATRIX
LEVEL
CONTROL
BLOCK
LUMA
PROGRAMMABLE
10
FILTER
SHARPNESS
FILTER
10
MODULATOR
PROGRAMMABLE
CHROMA
HUE
10
FILTER
CONTROL
10
SIN/COS
DDS SLOCK
12,13,18,26,31,47
GND
P n i F u n t c o i n
x i l e P o t r P ( 7 P - ) 0 P 0 e r p e r s e n s t
DV-656A-S
7
10 10
10BIT
DAC
10 10BIT
10
DAC
YUV
10 10 10BIT
DAC
DAC
CONTROL
BLOCK
10
10BIT
DAC
10
10 10BIT
10
DAC
10 10 10BIT
DAC
10
DAC
CONTROL
BLOCK
h t e L S B
8
A
B
C
35 DAC A
DAC B
33
D
DAC C
29
V
37
REF
22 R
ESET2
23 COMP2
25 DAC E
DAC F
24
DAC D
28
R
38
ESET1
E
COMP1
36
F
101
8