Sanyo NV-E7500 - Navigation System With DVD Player Service Manual page 17

EXPLANATION OF MICROCOMPUTER
IC 1 (M30802) 2/2
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Port I/O Signal
A18 O RESERVED
Vss VSS
A17 O RESERVED
A16 O RESERVED
A15 O RESERVED
A14 O RESERVED
A13 O RESERVED
A12 O RESERVED
A11 O RESERVED
A10 O RESERVED
A9 O RESERVED
P124 O -
P123 O FMLVL
P122 I DOOR
P121 O SMUTE
P120 O DMUTE
Vcc VCC
- - -
Vss VSS
-
- -
- - -
- - -
- - -
- - -
- - -
- - -
- - -
P17 O KS0
P16 O KS1
P15 O KS2
P14 O KS3
P13 I K0
P12 I K1
P11 I K2
P10 I K3
D7 I/O RESERVED
D6 I/O RESERVED
D5 I/O RESERVED
D4 I/O RESERVED
- - -
- - -
P112 I PARK_SW
P111 I M_ID1
P110 I TEST
D3 I/O RESERVED
D2 I/O RESERVED
D1 I/O RESERVED
D0 I/O RESERVED
P157 O LCD_CLK
P156 O LCD_DATA
P155 O LCD_CS
P154 O DM2
P153 O DM3
P152 O OSD_SW
P151 I M_ID2
Vss VSS
P150 O LIGHT
Vcc VCC
AN7 I X_AD
AN6 I Y_AD
AN5 I DCCHK
AN4 I TEMP
AN3 I BAT_I
AN2 I DIMIN
AN1 I SMETER
Avss AVSS
AN0 - SYS_REV
Vref VREF
Avcc AVCC
RXD4 I DVD-MAIN
NC
GND
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
GND
DOOR detect
Audio mute output
Image mute output
Power supply 4.2V-5.5V
NC
GND
NC
NC
NC
NC
NC
NC
NC
NC
GND
GND
GND
GND
Key return
Key return
Key return
GND
NC
NC
NC
NC
NC
NC
Parking cable plug input
GND
TEST MODE judgement input
NC
NC
NC
NC
LCD I/F CLOCK
LCD I/F DATA
LCD I/F TIP SELECT
LCD MODE output
LCD MODE output
OSD expression output
GND
GND
BACKLIGHT control
Power supply 4.2V-5.5V
TOUCH SCREEN input
TOUCH SCREEN input
Input of power supply confirmation
Input of temperature detection
Input of voltage detection
Dimmer sensor input
GND
Analog GND
Revision distinction
A-D reference voltage
Analog power supply
DVD-MAIN communication
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Function