MDX-01/02
9
CIRCUIT DESCRIPTION
Port #
Port Name
I/O
Description
ACTIVE
H
L
73
OPEN
O
No use
74
HI SP
O
Recording signal in high speed mode
NORMAL
75
SCLK
O
CD sense clock
76
SENS
I
CD sense
77
CD CLK
O
Clock for CD DSP
78
XLAT
O
Latch for CD DSP
79
CD DATA
O
Data for CD DSP
80
CD XRST
O
Reset for CD DSP
NORMAL
RESET
81
CODE
I
Model selector
82
CODE
I
Model selector
KITTY
NORMAL
83
CODE
I
Model selector
84~87
NC
-
No use
88
LOOP
-
No use
89,90
NC
-
No use
91
V.DET
I
AC power supply detection(less 1.25V:detect)
92
NC
O
No use
93~95
KEY1~3
I
Key signal
ON
OFF
96
AVSS
-
GND
97
NC
-
No use
98
VREF
I
Standard voltage for A/D converter
99
VCC(B.U.)
I
Standard voltage for A/D con5V)
100
NC
O
No use
Voltage[V]
0.00~0.46
0.47~1.32
1.33~2.14
2.15~3.00
3.01~3.80
3.81~4.60
more 4.61
KEY 1
-
SKIP UP
MD
SET/DEMO
MENU
-
KEY OFF
(#93)
EJECT
KEY 2
POWER
CD
BEST HITS
TUNER
REPEAT
SOUND
KEY OFF
(#94)
KEY 3
STOP
SKIP
VOL.+
VOL.-
MD
MD RE
KEY OFF
(#95)
DOWN
6-3 Key Matrix
✽
Reference voltage=5V.( )=Port of Microprocessor
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