90
• MAIN BOARD IC501 µPDSS3033AYGF-M11-3BA (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
GEQ DATA
O
Serial data output to the M62428AFP (IC301)
2
GEQ CLK
O
Serial data transfer clock signal output to the M62428AFP (IC301)
3
IIC DAT
I/O
Data input/output terminal for the IIC bus
4
CANT USE
O
Not used (fixed at “L”)
5
IIC CLK
I/O
Shift clock signal input/output terminal for the IIC bus
6
CANT USE
I
Not used (fixed at “L”)
7
LCD DATA
O
Display serial data output to the liquid crystal display (LCD600)
8
LCD CLK
O
Display serial data transfer clock signal output to the liquid crystal display (LCD600)
9
EVDD
—
Power supply terminal (+5V)
10
EVSS
—
Ground terminal
11, 12
MOTOR1,
MOTOR2
O
Motor drive signal output terminal Not used (open)
13
LCD CLEAR
O
Reset signal output to the liquid crystal display (LCD600) “L”: reset
14
LCD CE
O
Serial data latch pulse signal output to the liquid crystal display (LCD600) “L”: data output
15
KB DATA
I
Key board data input terminal Not used (fixed at “L”)
16
KB CLK OUT
O
Key board data transfer clock signal output terminal Not used (open)
17
KB CLK
I
Key board data reading clock signal input terminal Not used (fixed at “L”)
18
IIC HELP
I/O
Busy signal input/output for the IIC bus
19, 20
MODEL2,
MODEL1
I
Model Destination setting terminal
21
VPP
O
Not used
22
ST MUTE
O
Tuner muting on/off control signal output to the FM/AM tuner unit
23
ST STEREO
I
FM stereo detection signal input from the FM/AM tuner unit “L”: stereo
24
ST TUNED
I
Tuning detection signal input from the FM/AM tuner unit “L”: tuned, “H”; detuned
25
ST CE
O
PLL serial chip enable signal output to the FM/AM tuner unit
26
TA->ST DATA
O
PLL serial data output to the FM/AM tuner unit
27
ST->TA DATA
I
PLL serial data input from the FM/AM tuner unit
28
ST CLK
O
PLL serial data transfer clock signal output to the FM/AM tuner unit
29
ST-1
O
Headphone muting control signal output terminal Not used (open)
30
SOFT CHK
O
For soft check terminal Normally open
31
LCD ON/OFF
O
Power supply for liquid crystal display (LCD600) on/off control terminal
32
PROTECT
O
Speaker output over load detection signal input “L”: over load
33
DEVICE1
I
Not used (fixed at “L”)
34
RESET
I
System reset signal input from the reset signal generator (IC941) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
35
XTIN
I
Sub system clock input terminal (32.768 kHz)
36
XTOUT
O
Sub system clock output terminal (32.768 kHz)
37
REGC
I
Connected to the external capacitor
38
XOUT
O
Main system clock output terminal (16 MHz)
39
XIN
I
Main system clock input terminal (16 MHz)
40
VSS
—
Ground terminal
41
VDD
—
Power supply terminal (+5V)
42
CLK OUT
O
Not used (open)
43
LINE MUTE
O
Line muting on/off control signal output terminal “L”: muting on
44
STK MUTE
O
Audio muting on/off control signal output to the power amplifier “L”: muting on
45
SPK RELAY
O
Speaker on/off relay (RY881) control signal output “L”: speaker off
