Sanyo NV-E7500 - Navigation System With DVD Player Service Manual page 16

EXPLANATION OF MICROCOMPUTER
IC 1 (M30802) 1/2
Pin Port
TXD4
1
CLK4
2
DA1
3
DA0
4
TXD3
5
6 RXD3
CLK3
7
P146
8
P145
9
P144
10
11 P143
P142
12
P141
13
P140
14
BYTE
15
CNVss
16
P87
17
P86
18
19 RESET
Xout
20
Vss
21
Xin
22
Vcc
23
24 NMI
INT2
25
INT1
26
INT0
27
P81
28
P80
29
P77
30
P76
31
P75
32
P74
33
P73
34
P72
35
SCL2
36
37 SDA2
TXD1
38
Vcc
39
RXD1
40
Vss
41
P65
42
P64
43
TXD0
44
RXD0
45
P61
46
P60
47
P137
48
P136
49
50 P135
P134
51
P57
52
RAS
53
P55
54
55 -
P133
56
Vss
57
P132
58
Vcc
59
P131
60
P130
61
-
62
RD
63
-
64
WE
65
P127
66
P126
67
68 P125
-
69
-
70
-
71
-
72
A19
73
Vcc
74
I/O Signal
O MAIN_DVD MAIN-DVD communication
I DVD_CLK Clock input for the DVD
O DIMOUT Dimmer output
O VOL_0 DAC output for the volume adjustment
O MAIN_DARC NC
I DARC_MAIN NC
O DARC_CLK NC
O DARC_CE NC
O DARC_RST NC
O TU_CLK NC
O TU_DATA NC
O TU_LE NC
I TU_LOCK NC
I TU_SD NC
I BYTE Hi input
I CNVSS GND
O AU_SW1 AUDIO change switch
O AU_SW2 AUDIO change switch
I /RESET RESET input
O XOUT MAIN clock oscillator output
VSS GND
I XIN MAIN clock oscillator input
VCC Power supply 4.2V-5.5V
I BOOT1 FRASH writing
I VSYNC Vertical synchronizing signal input
I DARC_INT GND
I RMC Remote controller input
I VD_IN VIDEO input
O BEEP BEEP output
O DVD_INT INT output for the DVD
O FMT_CE GND
O FMT_MUTE GND
I PARK_I Parking judgement input
I CDCHK AUDIO CD judgement input
O DVD_RST DVD RESET signal
I/O SCL 2
I C BUS communication
I/O SDA 2
I C BUS communication
O KEY_TX RS232C output
VCC Power supply 4.2V-5.5V
I REVERSED GND
VSS GND
I BOOT2 FRASH writing
O TPCONT TOUCH SCREEN control
O MAIN-ASIC SH communication
I ASIC-MAIN SH communication
O TP_Y TOUCH SCREEN control
O TP_X TOUCH SCREEN control
O TV TV MODE output
O VIDEO VIDEO MODE output
O NAVI NAVI MODE output
O DVD DVD MODE output
I BOOT4 FRASH writing
O RAS GND
I BOOT3 FRASH writing
- - NC
O POWER POWER on/off output
VSS GND
O AMP1 AMP ON/OFF output
VCC Power supply 4.2V-5.5V
O AMP2 AMP ON/OFF output
I /NV_RST NAVI recovery
- - NC
O WE GND
- - NC
O CAS Pull-up
O LMUTE LINE OUT MUTE output
O VOL_CLK GND
O VOL_DATA GND
- - NC
- - NC
- - NC
- - NC
O VMUTE VMUTE output
VCC Power supply 4.2V-5.5V
Function
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