14
CDX-CA900/CA900X
Pin No.
Pin Name
I/O
Pin Description
51
NC
O
Not used. (Open)
52
MPTH
O
Not used in this set. (Open)
53
VSM
I
S-meter signal input from tuner unit (TUX201)
54
VCC
—
Power supply pin (+5 V)
55
BUS/AUX
O
BUS/AUX audio ground select signal output “H”: BUS
56
NS MASK
O
Tuner noise mask signal output (E model)
57
BOOT
O
Display microcomputer write control signal output to sub system control (IC701)
58
DOORIND
O
Front panel indicator signal output
59 to 62
—
I
Not used in this set. (Connect to ground.)
63
VSS
—
Ground pin
64
CD PACK
I
Servo IC CD text pack synchronization signal input
65, 66
(NCO)
O
Not used. (Open)
67
CD SELFSW
I
CD mechanism self load position detection switch signal input (SW2)
68
—
O
Not used. (Open)
69
FLASH W
I
Flash write mode detection signal input
70
I2CSIO
O
Tuner (TUX201), electronic volume (IC301) communication data signal output
71
I2CCKO
O
Tuner (TUX201), electronic volume (IC301) communication clock signal output
72
KEYACK
I
Key acknowledge detection signal input
73
X1A
—
Low speed oscillation signal input (32.768 kHz)
74
X0A
—
Low speed oscillation signal input (32.768 kHz)
75
DAVN
I
RDS data block synchronization detection signal input (E model)
76
(NCO)
O
Not used. (Open)
77
BU IN
I
Back up power detection signal input
78, 79
—
O
Not used. (Open)
80
ADON
O
Power control signal output of A/D converter
81
NOSESW
I
Front panel attachment detection signal input from nose detect switch (S102) “L”: ON
82
FLASH ON
O
Flash write jig power supply signal output
83
PWON
O
System power control signal output
84
—
O
Not used. (Open)
85
RAMBU
I
Reset detection signal input of RAM
86
HSTX
I
Hardware standby signal input “L”: Standby mode
87
MD2
I
Operation mode signal input Connect to ground in this set.
88, 89
MD1, 0
I
Operation mode signal input Connect to VCC in this set.
90
RESET
I
Microcomputer reset signal input
—
Ground pin
—
High speed oscillation signal input (3.68 MHz)
—
High speed oscillation signal input (3.68 MHz)
—
Power supply pin (+5 V)
O
Not used. (Open)
O
Not used. (Open)
I
Not used. (Open) Destination detection signal input
I
Not used. (Open) Destination detection signal input
O
Not used. (Open)
105
CD MON
O
CD mechanism power control signal output to power supply (IC801)
106
CD ON
O
CD mechanism voltage control signal output to power supply (IC801)
107
RCIN1 (P)
I
Rotary commander signal input from remote in jack (J651)
108
TESTIN (P)
I
Test mode set up detection signal input
109
TELATT (P)
I
Tell mute detection signal input
110
ILLIN (P)
I
Illumination line detection signal input “L”: Dimmer on
111
—
O
Not used. (Open)
112
(NCO)
O
Not used. (Open)
113
TUNON
O
Tuner on signal output
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