Read Sony CDX-GT400 / CDX-GT40W / CDX-GT450 / CDX-GT450S Service Manual online
37
CDX-GT40W/GT400/GT450/GT450S
50
MD1
I
Operation mode setting pin
51
MD2
I
Operation mode setting pin
52
KEYACK
I
Key acknowledgment detect signal input
53
TU_ATTIN
I
Not used (Pull up)
54
BUIN
I
Back-up power supply detect signal input
55
NCO
O
Not used (Open)
56
DAVN
I
Not used (Pull down)
57
NCO
O
Not used (Open)
58
UNISI
I
Bus control data input
59
UNISO
O
Bus control data output
60
UNISCK
O
Bus control clock output
61
NCO
O
Not used (Open)
62
NCO
O
Not used (Open)
63
NCO
O
Not used (Open)
64
SIRCS
I
Remote control (infrared rays) signal input
65
NCO
O
Not used (Open)
66
NCO
O
Not used (Open)
67
NCO
O
Not used (Open)
68
FLASH_W
I
Memory mode select setting pin
69
NCO
O
Not used (Open)
70
DOOR_SW
I
Front panel open/close detect signal input
71
RC_IN1
I
Rotary commander shift key signal input
72
ACC_IN
I
Accessory power supply detect signal input
73
TESTIN
I
Test mode detect signal input
74
TELATT
I
Telephone attenuate detect signal input
75
ILLUIN
I
Illumination on/off control signal input
76
XKEYON
O
A/D converter power supply control signal output
77
RESET
I
CPU reset input
78
NCO
O
Not used (Open)
79
XIN
I
Sub clock input (32.768kHz)
80
XOUT
O
Sub clock output (32.768kHz)
81
VSS1
—
Ground
82
OSCIN
I
Main clock input (18.432MHz)
83
OSCOUT
O
Main clock output (18.432MHz)
84
VCC3
—
Power supply pin (+3.3V)
85
SATSEL
I
Demo display setting pin
86
ATT
O
Audio mute control signal output
87
BUSON
O
Bus ON signal output
88
SYSRST
O
System reset output
89
EJECT_OK_SW
O
CD eject OK signal output
90
NCO
O
Not used (Open)
91
NCO
O
Not used (Open)
92
NCO
O
Not used (Open)
93
Z-MUTE
I
CD zero cross mute detect signal input
94
NCO
O
Not used (Open)
95
DEMO SEL
I
Demo on/off setting pin at Power ON
96
NCO
O
Not used (Open)
97
NCO
O
Not used (Open)
98
CD_ON
I
CD servo power control request signal input
99
CDM_ON
I
CD deck power control request signal input
100
OPEN-MUTE
O
During the AUX source mode signal output
Pin No.
Pin Name
I/O
Pin Description
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