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2.4.2 MAIN MICRO COMPUTER (CPU) FUNCTION
Pin
I/O
Pin name
No.
1
O
NC
2
I
/VSYNC
3
I
LB_PRO
4
-
NC
5
I
/RST
6
NC
O
7
/TEST
I
8
YS
O
9
I/O
SDA4
10
NC
O
11
A_MUTE
O
12
/HSYNC
I
13
NC
O
14
OSDXI
I
15
I
OSDXO
16
I/O
SDA2
17
I
AC_IN
18
SCL2
O
19
/TU_POW
O
20
VCOI
I
21
PDO
O
22
O
/IP_RESET
23
O
YM
24
B
O
25
LED_POWER
O
26
G
O
27
R
O
28
I
VREF
29
IP_ERR
I
30
IREF
I
31
COMP
I
32
AVDD
I
33
CLL
I
34
VREFLS
I
35
SUB_CCD
I
36
NC
-
37
VSS
I
38
MAIN_CCD
I
39
VREFHS
I
40
CLH
I
41
VDD
I
42
SCL4
O
Function
NC
V. sync for OSD
Low B protect detection [Detect : H]
NC
CPU reset [Reset : L]
NC
Operation test for CPU
Ys (blanking) for OSD
I C bus (data) for DIST
NC
Audio muting [Muting :H]
H.sync for OSD
NC
Keep for OSD oscillation
Keep for OSD oscillation
I C bus(data) for MTS
AC(60Hz) for timer clock
I C bus (clock) for MTS
NC
LPF
LPF
Reset for DIST [Reset : L]
YM (transparence) for OSD
OSD blue
Lighting for POWER LED [Lighting : H]
OSD green
OSD red
Reference voltage for OSD
AMDP program load error detection
Reference current for OSD
Phase adjust for OSD
+3.3V
For Low clamp level
Reference voltage in for sub CCD
Composite video for sub CCD
NC
GND
Composite video for main CCD
Reference voltage in for main CCD
For High clamp level
+3.3V
I C bus (clock) for DIST
Pin
I/O
Pin name
No.
43
O
CLK_SW
44
O
LED_ON_TIMER
45
O
NC
46
I
NC
47
I
SBT1
48
NC
O
49
O
NC
50
NC
O
51
O
NC
52
ABL/ACL
O
53
O
CHROME
54
O
DC_COTL
55
NC
O
56
O
NC
57
I
AFC_1
58
O
/LOB_POW
59
I
/COMPLINK
60
I
/POWERGOOD
61
I
/MECA_ON
62
O
/MAIN_POW
63
-
NC
64
O
/B1_POW
65
I
AFC2
66
I
X-RAY
67
I
NC
68
I
KEY2
69
I
KEY1
70
O
SCL1
71
SDA1
I/O
72
I
REMO
73
O
NC
74
I
VSS
75
O
OSC2
76
I
OSC1
77
VDD
I
78
O
SCL0
79
O
NC
80
I/O
SDA0
81
O
NC
82
I
NC
83
-
NC
84
O
P MUTE
Function
IP clock switch control
NC
NC
NC
Use for on board writing [for factory]
NC
NC
NC
NC
ABL/ACL control
Chroma / Gamma control
Black level DC reproduce control
NC
NC
Sub AFT voltage
LOB power control [Power on : L]
AV compulink
control
Power condition check
Power SW interrupt [Pushing :L]
Main power control [Power on : L]
NC
B1 power control [Power on : L]
Main AFT voltage
X-ray protect detection [Protect : 0.7v]
NC
Key scan for front key (CH+,Vol-/+)
Key scan for front key (Menu,CH-)
I C bus (clock) for main memory
I C bus (data) for main memory
Remote control
NC
GND
System clock oscillation (4MHz)
System clock oscillation (4MHz)
+3.3V
I C bus (clock) for generally
NC
I C bus (data) for generally
NC
NC
NC
Picture muting
(No.52170)1-7
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