44
HCD-EC70
PANEL BOARD IC701 MB90802-108 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
P24
O
Power relay control signal output
2
P25
O
Amp control signal output
3
P26
O
System reset signal output to the RF AMP
4
P27
O
Control signal output to the PB/REC EQ AMP
5
P30/SO3
O
Serial data output to the MP3 decoder
6
P31/SC3
O
Serial data transfer clock signal output to the MP3 decoder
7
P32/SI3
I
Serial data input
8
P33/TMCK
O
Latch pulse signal output to the RF AMP
9
P34/IC0
I
Remote sensor signal input
10
P35/IC1
O
Serial data latch pulse output to the MP3 decoder
11
P36/OCU0
O
M-MUTE signal output to the MP3 decoder
12
P37/OCU1
O
Data transfer request signal output to the MP3 decoder
13
X0A/P90
O
Resonator output terminal (32.768kHz)
14
X1A/P91
I
Resonator input terminal (32.768kHz)
15
VCC
—
Power supply terminal (+3.3V)
16
VSS
—
Ground terminal
17
P40/LED0
O
STANDBY LED control signal output
18
P41/LED1
I
CD switch (SW3) input terminal
19
P42/LED2
I
CD switch (SW1) input terminal
20
P43/LED3
I
CD switch (SW2) input terminal
21
P44/LED4
O
Loading motor control signal output
22
P45/LED5/TOT0
O
Loading motor control signal output
23
P46/LED6/TOT1
O
Elevator up/down motor control signal output
24
P47/LED7/TOT2
O
Elevator up/down motor control signal output
25
P50/TIN0
I
CD chuck switch (SW7) input terminal
26
P51/TIN1
I
CD close switch (SW6) input terminal
27
P52/TIN2/PPG0
I
CD stock switch (SW5) input terminal
28
P53/PPG1
I
CD open switch (SW8) input terminal
29
P54/SI0
I
Internal status (SENSE) input from the CD DSP
30
P55/SC0
O
Serial data transfer clock signal output to the CD DSP
31
P56/SO0
O
Serial data output to the CD DSP
32
AVCC
—
Power supply terminal (+3.3V)
33
P57/SI1
I
Data input from the the tuner
34
P76
O
Oscillator control signal output to the CD DSP
35
AVSS
—
Ground terminal
36
P60/AN0
I
Power detection signal input
37
P61/AN1
I
Key AD input1
38
P62/AN2
I
Key AD input2
39
P63/AN3
I
Tuner tuned status signal input
40
P64/AN4
I
Bias signal input from the bias oscillation circuit
41
P65/AN5/INT0
I
Key AD input3
42
P66/AN6/INT1
I
Power down detection signal input
43
P67/AN7/INT2
I
Subcode data request signal input terminal
44
VSS
—
Ground terminal
45
P70/AN8/INT3
—
Not used (open)
46
P71/AN9/SC1
O
Back light LED control signal output
47
P72/AN10/SO1
I
SUFFIX signal input (Connected to +3.3V)
48
P73/AN11/SI2
I
Signal input from the volume encoder
