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MDX-G1
QQ
3 7 63 1515 0
7-2 Key Matrix
Input Voltage
(V)
0.00 0.45
0.48 1.10
1.13 1.78
1.81 2.37
2.41 2.80
2.84 3.25
3.29 3.68
3.72 4.22
ú
4.24 4.60
*The input voltage value : for 4.6[V] in a standard voltage.
7-3 Port Description of Microcomputer
Port No.
Port Name
1
SEL DATA
2
SEL CLK
3
SLTSW
4
5
6
TE
L 13942296513
7
8
9
CN VSS
10
11
XC OUT
12
RESET
13
14
15
16
VCC(BU)
17
18
19
20
21
22
23
24
OP/CL SW
25
26
MD RST
27
MD IN SW
28
29
30
MDATA
www
31
MD TXD
32
MD RXD
33
34
AMUTE
35
FL DATA
36
37
FL CLK
8
CIRCUIT DESCRIPTION
KEY 1
Pin94
AUX
REC
BEST HITS
SOUND
SET
MENU
VOL DOWN
VOL UP
ìì
KEY OFF
I/O
O
Data output to electric volume system IC.
O
Clock output to electric volume system IC.
I
CD start limit switch input.
XRST
O
Reset signal output to CD DSP.
NC
-
Unused.
SUBQ
I
CD sub code input.
SQCK
O
Clock output for CD sub code.
BYTE
-
Connected to ground.
-
Connected to ground.
XC IN
I
Timer clock input (32.768kHz).
O
Timer clock output (32.768kHz).
I
Reset signal input for microcomputer.
X OUT
O
Main clock output (10MHz)
VSS
-
Connected to ground.
X IN
I
Main clock input. (10MHz)
-
Supply power input (+5V).
NMI
-
Supply power input (+5V).
REM
I
Remote control signal input.
NC
-
Unused.
BLKCK
I
Sub code synchronous signal input.
CE
I
Chip enable input for back up detection.
NC
-
Unused.
MLD
O
CD DSP command load signal output.
I
Input port of detection switch for CD open/close.
MD CE
I
Detection port for MD back up.
I
Reset output from MD mechanism.
I
Load switch input for MD disc.
MCLK
O
CD DSP command clock signal output.
STAT
I
CD DSP status signal input.
O
CD DSP command data output.
O
MD communication TX .(to mecha. u-com RX)
I
MD communication RX .(to mecha. u-com TX)
x
ao
y
AMP
O
Control port of standby switch for power amplifier.
O
Audio mute output.
.
i
O
Data output to FL dot driver.
NC
-
Unused.
O
Clock output to FL dot driver.
8
KEY 2
Pin93
POWER
MD EJECT
SKIP DOWN
STOP
SKIP UP
MD PLAY/PAUSE
CD PLAY/PAUSE
BAND
ìì
KEY OFF
Description
Q Q
3
6 7
1 3
u163
.
2 9
9 4
2 8
Active
H
1 5
0 5
8
2 9
9 4
AC On
m
co
9 9
L
Reset
2 8
9 9
Reset
AC Off
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