Pin No.
Pin Name
I/O
Description
-23-
1
COM4
O
Output common signal to LCD common pin
2
COM3
O
Output common signal to LCD common pin
3
COM2
O
Output common signal to LCD common pin
4
COM1
O
Output common signal to LCD common pin
5
VLC3
I
"Supply power to LCD,connect to Vss"
6
VLC2
I
Supply 1/3Vcc power to LCD
7
VLC1
I
Supply 2/3Vcc power to LCD
8
VDD
–
Power supply pin
9
OSC2
O
This is open when external clock input
10
OSC1
I
External clock input pin
11
VSS
–
"Power supply pin , connect to GND"
12
XI
I
"NO used ,connect to Vss"
13
XO
O
"No used ,leave this pin open"
14
MMOD
I
"Memory mode switch input pin,allways set to low"
15
Vref-
–
"Power supply for A/D converter,connect to Vss"
16
KEY1
I
Control key
17
KEY2
I
Control key
18
REMOCON
I
"No used,set to high level"
19
KEY3
I
Control key
20
MSEL1
I
"Memory select pin, set low level"
21
MSEL2
I
"Memory select pin, set low level"
22
MECH1
I
"CD mechanism select,set high level"
23
MECH2
I
"CD mechanism select,set high level"
24
Vref-
–
"Power supply for A/D converter,connect to Vdd"
25
TXD
I
"No used , set to high level"
26
SUBQ
I
Subcode Q-data input from DSP
27
SQCK
O
Clock output for sub-code of DSP
MCU data output to DSP
"NO used,set to high level"
MCU clock signal output to DSP
MCU load signal output to DSP
I
Reset pin ( active low)
3.3V power supply ON/OFF control
Headphone audio signal output mute control
Audio signal output mute control
36
P13
–
"No used ,set to open"
37
MRST
O
Reset signal output for DSP (active low)
38
BLKCK
I
Sub-code block clock signal input from DSP
39
SYNA/AD13
I
CDROM synchronize
40
STAT
I
Status signal from DSP input
41
REMSEL
I
"NO used,set to high level"
IC DESCRIPTION - 1/2 (MN101C39CBA - 1/2)
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