JVC AV-48P575 Series Service Manual page 8

2.4 TECHNICAL INFORMATION
2.4.1 MAIN MICRO COMPUTER (CPU) FUNCTION (MN102H75K)
Pin No. Pin name I/O
1 NC O
2 /MICON_V I
3 LB_PRO I
4 NC -
5 /RST I
6 NC O
7 /TEST I
8 OSD_YS O
9 SDA4 I/O I
10 NC O
11 A_MU O
12 /MICON_H I
13 NC O
14 P46,OSDXI I
15 P45,OSDXO O
16 SDA2 I/O I
17 AC-IN I
18 SCL2 O
19 NC O
20 VCOI I
21 PDO O
22 /IP_RESET O
23 OSD_YM O
24 OSD_B O
25 POWER_LED O
26 OSD_G O
27 OSD_R O
28 VREF I
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/VPP I
42 SCL4 O
43 NC O
Function
--------
V.sync for OSD
Low B protection detection
[Protection:H]
--------
Main CPU reset [Reset:L]
--------
+3.3V
OSD Ys (blanking)
2
C bus (data) for JCC5055
--------
Audio muting [Muting:H]
H sync for OSD
--------
Oscillation for OSD
Oscillation for OSD
2
C bus (data) for MTS
AC for timer count
2
I C bus (clock) for MTS
--------
LPF
LPF
Reset for DIST [Reset:L]
OSD Ym (transparence)
OSD blue
Lighting for POWER LED
[HIGH / ON:H]
OSD green
OSD red
Reference voltage for OSD
DIST program load detect.
Reference current for OSD
Phase adjust for OSD
+3.3V
Clamp low level
Reference voltage for SUB CCD
Video for sub closed caption
decoder
--------
GND
Video for main closed caption
decorder
Reference voltage for MAIN CCD
Clamp high level
+3.3V
2
I C bus (data) for JCC5055
--------
Pin No. Pin name I/O
44 ON_TIM O
45 SBO 0 O
46 SBD 0 I
47 SBT1 I
48 AP_DATA -
49 BS_RST -
50 SQR -
51 BS1.5CTL -
52 NC O
53 NC O
54 DC_COTL O
55 NC O
56 NC O
57 NC O
58 /LOB_POW O
59 COMPULINK I
60 /POWERGOOD I
61 /MECA_ON I
62 /MAIN_POW O
63 NC -
64 /B1 POW O
65 AFC I
66 X_RAY I
67 SPRIT O
68 KEY2 I
69 KEY1 I
70 SCL1 O
71 SDA1 I/O I
72 REMO I
73 NC O
74 VSS I
75 OSC2 O
76 OSC1 I
77 VDD I
78 SCL0 O
79 AP_CLK O
80 SDA0 I/O I
81 NC O
82 NC O
83 NC -
84 P_MU O
Function
Lighting for on timer operating
[LOW / ON:H]
Convergence control [RXD]
Convergence control [TXD]
--------
--------
--------
--------
--------
--------
--------
Black level DC reproduce control
--------
--------
--------
LowB power control [Power on:L]
AV COMPULINK III control
Power condition check
Machine SW interrupt [Pushing:L]
Main power control [Power on :L]
--------
B1 power control [Power on:L]
AFT voltage
X-ray protection detection
[Protection : 2.0V]
NC
Front key scan 2 (CH+, VOL-/+)
Front key scan 1 (MENU, CH-)
2
I C bus (clock) for EEP-ROM
2
C bus (data) for EEP-ROM
Remote control
--------
GND
4MHz oscillation for system clock
4MHz oscillation for system clock
+3.3V
2
I C bus (clock) for general
--------
2
C bus (data) for general
--------
--------
--------
Picture muting [Muting:H]
(No.YA091)1-7