Sharp AQUOS LC-37AD1E, Service Manual

Page: 60 / 262

60
60-1
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LC-37AD1E
Ë
VHITB1274AF1EQ (ASSY:IC801)
VIDEO/CHROMA/SYNC. processor
»
Block Diagram
»
Pin Function
Pin No
.
P
in Name
I/O
Pin Function
1
CVBS1/Y1-IN
I
CVBS1 or a Y1-IN signal is inputted.
2
SYNC-IN
I
Synchronized signal is inputted.
3
CVBS-OUT
O
O
utput terminal of CVBS or a Y+C signal.
4
V
S
O
Counted-down vertical synchronized signal is outputted.
5
COMB Y-IN
I
Y
-signal outputted from comb-filter is inputted.
It opens, when not using it.
6
D-VDD
—
Power supply of a DDS/BUS/V-CD/H-CD block is supplied. DC5V (standard)"
7
COMB C-IN
I
C-signal outputted from comb-filter is inputted. It opens, when not using it."
8
D
-GND
—
GND terminal of a DDS/BUS/V-CD/H-CD block.
9
H
S
O
Horizontal synchronized signal which required H-AFC is outputted.
10
SCP
O
Sand Castle Pulse is outputted. A clamp pulse and a horizontal Blanking pulse are outputted.
11
Yvi-IN
O
Y
-signal for a synchronous input selected by Video-SW is outputted.
12
SYNC-VCC
—
Power supply of a SYNC/HVCO block is supplied. DC5V (standard)
13
SCL
I
SCL terminal of I2CBUS.
14
SDA
I/O
SDA terminal of I2CBUS.
15
YS3(RGB1-in)
I
Selecte SW of a main signal and RGB1 input signal. Only when "RGB1-ENB" is set as "enable" by bus setup, the input of YS3 becomes effective.
16
SYNC-GND
—
GND terminal of a SYNC/HVCO block.
17
Cr1-IN
I
Y1-/Cb1/Cr1 signal is inputted.
18
Cb1-IN
I
19
Y1-IN
I
20
CLP-FIL
—
Filter for Y clamp is connected.
21
Y-OUT
O
Y/Cb/Cr signal is outputted.
22
Cb-OUT
O
23
Cr-OUT
O
24
YS1(YVbC2-IN)
I
Selecte SW of a main signal and YCrCb2 input signal.
25
B1-IN
I
RGB1 signal is inputted. This input is selected in YS3 or I2CBUS.
26
G1-IN
I
27
R1-IN
I
28
Y/C-GND
—
GND terminal of Y/C/Text/Video-SW / 1HDL block.
29
Cr2-IN
I
Y2/Cb2/Cr2 signal is inputted. This input is selected in YS1. It opens, when not using it.
30
Cb2-IN
I
31
Y2-IN
I
32
Y/C-VCC
—
Power supply of Y/C/Text/Video-SW / 1HDL block is supplied. DC5V (standard)
33
B2-IN
I
RGB2 signal is inputted. This input is selected in YS2. It opens, when not using it.
34
G2-IN
I
35
R2-IN
I
36
YS2/YM(RGB2-IN)
I
Selecte SW of a main signal and RGB2 input signal.
37
FIL.
—
Connects with a Y/C-VCC terminal.
38
X'TAL
—
16.2MHz X'tal oscillation element is connected.
39
C3-IN
I
Chrominance signal is inputted. It opens, when not using it.
40
APC-FIL
—
Filter for a chrominance demodulater is connected.
41
CVBS3/Y3-IN
I
CVBS3 or Y3 signal is inputted. It opens, when not using it.
42
ADDRESS
I
S
lave address is set up.
43
C2-IN
I
Chrominance signal is inputted. It opens, when not using it.
44
CVBS2/Y2-IN
I
CVBS2 or Y2 signal is inputted. It opens, when not using it.
45
COMB SYS
O
The distinction result of the received color system is outputted from this terminal and a terminal 46.
46
Fsc-OUT
O
Subcarrier is outputted.
47
AFC-FIL
—
Filter for AFC detection is connected.
48
C1-IN
I
Chrominance signal is inputted. It opens, when not using it.