JVC AV-N48P55/H, Руководство по обслуживанию, Страница: 7 / 113

(No.YA166)1-7
2.3 TECHNICAL INFORMATION
2.3.1 MAIN MICRO COMPUTER (CPU) FUNCTION (MN102H75K)
Pin No. Pin name I/O Function
1 NC O --------
2 /MICON_V I V.sync for OSD
3 LB_PRO I
Low B protection detection
[Protection:H]
4 NC - --------
5 /RST I Main CPU reset [Reset:L]
6 NC O --------
7 /TEST I +3.3V
8 OSD_YS O OSD Ys (blanking)
9 SDA4 I/O I
2
C bus (data) for JCC5055
10 NC O --------
11 A_MU O Audio muting [Muting:H]
12 /MICON_H I H sync for OSD
13 NC O --------
14 P46,OSDXI I Oscillation for OSD
15 P45,OSDXO O Oscillation for OSD
16 SDA2 I/O I
2
C bus (data) for MTS
17 AC-IN I AC for timer count
18 SCL2 O I
2
C bus (clock) for MTS
19 NC O --------
20 VCOI I LPF
21 PDO O LPF
22 /IP_RESET O Reset for DIST [Reset:L]
23 OSD_YM O OSD Ym (transparence)
24 OSD_B O OSD blue
25 POWER_LED O
Lighting for POWER LED
[HIGH / ON:H]
26 OSD_G O OSD green
27 OSD_R O OSD red
28 VREF I Reference voltage for OSD
29 IP_ERR I DIST program load detect.
30 IREF I Reference current for OSD
31 COMP I Phase adjust for OSD
32 AVDD I +3.3V
33 CLL I Clamp low level
34 VREFLS I Reference voltage for SUB CCD
35 SUB_CCD I
Video for sub closed caption
decoder
36 NC - --------
37 VSS I GND
38 MAIN_CCD I
Video for main closed caption
decorder
39 VREFHS I Reference voltage for MAIN CCD
40 CLH I Clamp high level
41 VDD/VPP I +3.3V
42 SCL4 O I
2
C bus (data) for JCC5055
43 NC O --------
44 ON_TIM O
Lighting for on timer operating
[LOW / ON:H]
45 SBO 0 O Convergence control [RXD]
46 SBD 0 I Convergence control [TXD]
47 SBT1 I --------
48 AP_DATA - --------
49 BS_RST - --------
50 SQR - --------
51 BS1.5CTL - --------
52 NC O --------
53 NC O --------
54 DC_COTL O Black level DC reproduce control
55 NC O --------
56 NC O --------
57 NC O --------
58 /LOB_POW O LowB power control [Power on:L]
59 COMPULINK I AV COMPULINK III control
60 /POWERGOOD I Power condition check
61 /MECA_ON I Machine SW interrupt [Pushing:L]
62 /MAIN_POW O Main power control [Power on :L]
63 NC - --------
64 /B1 POW O B1 power control [Power on:L]
65 AFC I AFT voltage
66 X_RAY I
X-ray protection detection
[Protection : 2.0V]
67 SPRIT O NC
68 KEY2 I Front key scan 2 (CH+, VOL-/+)
69 KEY1 I Front key scan 1 (MENU, CH-)
70 SCL1 O I
2
C bus (clock) for EEP-ROM
71 SDA1 I/O I
2
C bus (data) for EEP-ROM
72 REMO I Remote control
73 NC O --------
74 VSS I GND
75 OSC2 O 4MHz oscillation for system clock
76 OSC1 I 4MHz oscillation for system clock
77 VDD I +3.3V
78 SCL0 O I
2
C bus (clock) for general
79 AP_CLK O --------
80 SDA0 I/O I
2
C bus (data) for general
81 NC O --------
82 NC O --------
83 NC - --------
84 P_MU O Picture muting [Muting:H]
Pin No. Pin name I/O Function