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MDX-G3
QQ
3 7 63 1515 0
4-2 Key Matrix
Input Voltage(V)
KEY2(Pin7)
0.00 0.45
0.43 1.10
1.13 1.78
1.81 2.37
SKIP DOWN
2.41 2.80
2.84 3.25
3.29 3.68
3.72 4.22
4.24 4.60
4-3 Voltage Value of Control Port
1 Deck Reel Pulse
Input Voltage (V)
0.00~1.94
1.95~2.91
2.92~4.6
4-4 Port Description of Microprocessor
Port No.
Port Name
1
GND
2
PHOTO
TE
L 13942296513
3
TYPE
4
PROTECTION
5
CD PROTECT
6
MD BACKV
7,8
KEY2,KEY1
9
KEY3
10
VREF+
11
VDD
12
OSC2
13
OSC1
14
GND
15
XI
16
XO
17
GND
18
MD TXD
19
MD RXD
20
NC
21
FL SDATA
22
NC
23
FL SCLK
24
FLRESET
25
FL CE
26
REM
27
MODEL TYPE
28
CD BLKCK
www
29
RDSCLK
30,31
ENC A,B
32
VDD2
33
RESET
.
34
CE
35
OP/CL SW
36
SLTSW
37
XRST
6
38~40
NC
CIRCUIT DESCRIPTION
Input Voltage Value : 4.6V
KEY1(Pin8)
POWER
BEST HITS
SOUND
MD REC
AUX
TAPE REC
TUNER
SKIP UP
CD PLAY/PAUSE
STOP
MD PLAY/PAUSE
MD EJECT
TAPE PLAY
MENU
SET/DEMO
KEY OFF
KEY OFF
Active
LOW
-
HIGH
I/O
Connected to ground.
I
Deck reel sensor input.
I
Discrimination of tuner destination.
I
Detection port for power supply protection.
I
Detection port for CD protection.
I
Detection port for MD back up voltage.
I
A/D key (1,2) input.
Unused.
A/D reference voltage input for the A/D converter.
Power supply input (+5V).
O
Main clock output (8.38MHz).
I
Main clock input (8.38MHz).
Connected to ground.
I
Timer clock input (32kHz).
O
Timer clock output (32kHz).
Connected to ground
O
MD communication TX (to mecha. u-com RX).
I
MD communication RX (to mecha. u-com TX).
-
Unused.
O
Data output to FL dot driver.
-
Unused.
O
Clock output to FL dot driver.
O
Reset output to FL dot driver.
O
CE output to FL dot driver.
I
Remote control signal input.
I
Discrimination port for model type.
I
Sub code synchronous signal input.
-
Unused.
I
Volume encoder (A/B) input.
x
ao
y
-
Microcomputer power supply (+5v).
I
Reset signal input for microcomputer.
i
I
Back up detection input.
I
Input port of detection switch for CD open/close.
I
CD start switch input.
O
CD DSP reset output.
-
Unused.
8
2 Tuner Destination(Pin3)
Input Voltage(V)
0.00~2.50
2.51~4.6
3 Voltage Protection(Pin4)
Input Voltage(V)
0.00~2.50
2.51~4.6
4 CD Protection(Pin5)
Input Voltage(V)
0.00~1.49
1.50~3.49
3.50~4.6
Description
Q Q
3
6 7
1 3
u163
.
2 9
9 4
2 8
Type
J(Japan)
M(Asia)
Protection
ON
OFF
Protection
ON
OFF
ON
Active
H
1 5
0 5
8
2 9
9 4
Fixed
m
co
AC On
9 9
L
2 8
9 9
Reset
Reset
AC Off
Reset
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