40
ZS-S50CP
MAIN BOARD IC803 MB90F045PF-G-9027-SPE1 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
O-BK-LIGHT
O
LED drive signal output terminal for LCD back light "H": LED on
2
NC
-
Not used
3
LCD-VDDON
O
LCD power supply on/off control signal output terminal "H": LCD power on
4 to 10
NC
-
Not used
11
GND
-
Ground terminal
12
LCD-INHB
O
LCD display control signal output to the LCD driver
13
LCD-RSTB
O
System reset signal output to the LCD driver
14
LCD-CSB
O
Serial data transfer chip select signal output to the LCD driver
15 to 18
NC
-
Not used
19
LCD-SO
O
Serial data output to the LCD driver
20
LCD-SCK
O
Serial data transfer clock signal output to the LCD driver
21
ROM-SDA
I/O
Two-way data bus with the EEPROM
22
ROM-SCL
O
Serial data transfer clock signal output to the EEPROM
23
VCC
-
Power supply terminal (+3.3V)
24 to 32
NC
-
Not used
33
VOL-DATA
O
Serial data output to the electrical volume
34
VOL-CLK
O
Serial data transfer clock signal output to the electrical volume
35
AD-VCC
-
Power supply terminal (+3.3V)
36
AD-VREF
-
Reference voltage (+3.3V) terminal
37
AD-VSS
-
Ground terminal
38
REG6V-CHK
I
Input terminal for +6.2V power supply voltage detection
39
REG3V-CHK
I
Input terminal for CD +3.3V power supply voltage detection
40
NC
-
Not used
41
BATCHK-M
I
Input terminal for battery middle voltage (+4.5V) detection
42
GND
-
Ground terminal
43
BATCHK-H
I
Input terminal for battery high voltage and AC power supply (+9V) detection
44 to 46
I-KEY0 to
I-KEY2
I
Front panel key input terminal (A/D input)
47
I-WAKEUP
I
Wake-up signal input terminal
48
A-MUTE
O
Audio muting on/off control signal output terminal "H": muting on
49
MD0
I
Input terminal for mode setting "L": flash writing mode, "H": normal mode
50
MD1
I
Input terminal for mode setting "H": normal and flash writing mode
51
MD2
I
Input terminal for mode setting "L": normal mode, "H": flash writing mode
52
NC
-
Not used
53
BASS-ON
O
Mega bass on/off control signal output terminal "L": Mega bass on
54
CD-ON
O
CD +3.3V power supply on/off control signal output terminal "H": power on
55
I-AC/DC
I
AC/DC power supply detection terminal "L": AC, "H": DC (battery)
56
O-PCONT
O
System power on/off control signal output terminal "H": power on
57
SBSY
I
Subcode block sync signal input from the CD-MP3 processor
58 to 61
BUS0 to BUS3
O
Serial data output to the CD-MP3 processor
62, 63
SUFFIX0,
SUFFIX1
I
Input terminal for destination discrimination
64
I-RMC
I
SIRCS signal input from the remote control receiver
65
SUFFIX2
I
Input terminal for destination discrimination
66
BUCK
O
Serial data transfer clock signal output to the CD-MP3 processor
