HCD-EX6/EX6T/EX8/EX8T/EX9/EX9T
44
Pin No.
Pin Name
I/O
Description
1
SEG32
O
Segment drive signal output for the liquid crystal display panel
2
O-SP-RELAY-ON/
TC ON/SW ON
O
Speaker relay drive signal output, tape power ON/OFF control signal output (HCD-EX6T/
EX8T/EX9T) and subwoofer function ON/OFF control signal output (HCD-EX9/EX9T)
3
O-POWER
O
Main power ON/OFF control signal output (H: main power ON)
4
O-5V-ON
O
CD and VBUS power ON/OFF control signal output (H: CD and VBUS power ON)
5
I-3CD-SW3
I
CD motor disc tray close switch detection signal input from the CD mechanism deck
6
I-3CD-SW2
I
CD motor disc tray address switch detection signal input from the CD mechanism deck
7
I-3CD-SW1
I
CD motor disc tray open switch detection signal input from the CD mechanism deck
8
O-3CD-M1+
O
CD spindle motor drive (+) signal output for the CD mechanism deck
9
I-RMC
I
Remote control signal input from the remote control signal receiver
10
O-3CD-M1–
O
CD spindle motor drive (–) signal output for the CD mechanism deck
11
O-3CD-M2+
O
CD sled motor drive (+) signal output for the CD mechanism deck
12
O-3CD-M2–
O
CD sled motor drive (–) signal output for the CD mechanism deck
13
X0A
I
Sub system clock signal input (32.768 kHz)
14
X1A
O
Sub system clock signal output (32.768 kHz)
15
VCC
—
Power supply pin (+3.3 V)
16
VSS
—
Ground
17
O-CD-CE
O
Chip enable signal output for the CD-MP3 processor
18
O-CD-CL
O
Clock signal output for the CD-MP3 processor
19
I-CD-DI
I
Serial data input from the CD-MP3 processor
20
O-CD-DO
O
Serial data output for the CD-MP3 processor
21
I-3CD-CHACK
I
Chucking switch detection signal input from the CD mechanism deck
22
I-3CD-STOCK
I
Stock switch detection signal input from the CD mechanism deck
23
O-CD-M-MUTE
O
CD motor drive ON/OFF mute control signal output for the CD motor/coil driver
24
O-CD-RST
O
System reset signal output for the CD-MP3 processor
25
O-DIMMER1
O
Volume LED dimmer control signal output
26
O-CD-ON
O
Digital power supply control signal output for the CD-MP3 processor
27
O-LED-VOL
O
Volume LED drive control signal output
28
O-LED-LCD
O
LCD back light LED drive control signal output
29
I-USB-TXD
I
USB TX signal input from the USB controller
30
O-TP_REC_MUTE
O
Tape REC mute signal output for the tape mechanism deck
31
O-USB-RXD
O
USB RX signal output for the USB controller
32
AVCC
—
Power supply pin (+3.3 V)
33
O-USB-SLEEP
O
Sleep control signal output for the USB controller
34
O-USB-RST
O
System reset signal output for the USB controller
35
AVSS
—
Ground
36
I-P-MONI
I
Power monitor signal input
37, 38
I-KEY1, I-KEY2
I
Front panel key signal input (A/D input)
39
I-TU-ANSD
I
Auto gain control signal input
40
I-5V/9V-DET
I
Power supply voltage detection signal input
41
I-KEY-WAKE-UP/VOL
I
Front panel key wake-up signal input/volume control signal input
42
I-HOLD
I
Micon stop mode control signal input
43
I-LEVEL
I
Audio level detection signal input
44
GND
—
Ground
45
I-3CD-CLOSE/OPEN
I
Disc tray close/open detection signal input from the CD mechanism deck
46
I-MODEL
I
Model setting pin
47
I-SUFFIX/TP-STATE
I
Destination setting pin/tape state detection signal input (HCD-EX6T/EX8T/EX9T)
48
I-TU-DO
I
Serial data input from the AM/FM DET
49
O-I2C-FUNC-DATA
O
Serial data output for the electrical volume
50
O-I2C-FUNC-CLK
O
Serial data transfer clock signal output for the electrical volume
51
MD2
—
Not used. (Fixed at L in this set)
52
MD1
—
Not used. (Connect to VDD)
53
MD0
—
Not used. (Fixed at H in this set)
54
I-RST
I
Reset signal input (L: reset)
55
O-TU-CE
O
Chip enable signal output for the AM/FM DET
56
O-TU-DI
O
Serial data output for the AM/FM DET
57
O-TU-CLK
O
Serial data transfer clock signal output for the AM/FM DET
58
VLCD
—
Terminal for doubler circuit capacitor connection to develop liquid crystal display panel drive
voltage
PANEL BOARD IC301 MB90F831PF-G-SPE1 (SYSTEM CONTROLLER)
