Read Sony CDX-GT121 / CDX-GT220 / CDX-GT222 Service Manual online
28
CDX-GT121/GT220/GT222
61
CODEC_SEL
I
MP3 select signal input “H”: MP3, “L”: Non-MP3
62
ILLUMI SEL
I
Illumination voltage setting signal input “H”: 10.4 V, “L”: 9.0 V
63
NCO
O
Not used. (Open)
64
SIRCS
I
Remote control signal input
65 to 67
NCO
O
Not used. (Open)
68
FLASH_W
I
Memory mode select signal input Not used in this set. (Pull up)
Normally “H” input: Single chip mode, after reset “L”: Flash write mode
69, 70
NCO
O
Not used. (Open)
71
RC_IN1
I
Rotary commander shift key signal input Not used in this set. (Pull up)
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
NCO
O
Not used. (Open)
76
AD_ON
O
A/D converter power supply control signal output
77
RESET
I
System reset signal input
78
NCO
O
Not used. (Open)
79
XOUT
O
Low speed operation clock signal output (32.768 kHz)
80
XIN
I
Low speed operation clock signal input (32.768 kHz)
81
VSS1
—
Ground pin
82
OSCIN
I
High speed operation clock signal input (18.432 MHz)
83
OSCOUT
O
High speed operation clock signal output (18.432 MHz)
84
VCC3
—
Power supply pin (+3.3 V)
85
DEMOSEL
I
DEMO select signal input “H”: DEMO on, “L”: DEMO off
86
ATT
O
Audio mute control signal output
87
BUSON
O
BUS ON signal output
88
SYSRST
O
System reset signal output
89 to 92
NCO
O
Not used. (Open)
93
Z-MUTE
I
CD zero cross mute detect signal input
94
B OUT SEL
I
Black out with/without discrimination select signal input “H”: Black out
95
INI RS
I
REAR/SUB INITIAL setting signal input “H”: REAR INITIAL, “L”: SUB INITIAL
96
MO-DISP
I
Motion display signal input “H”: Motion display on, “L”: Motion display off
97
DIM_SEL
I
Dimmer select signal input “H”: Dimmer, “L”: No dimmer
Not used in this set. (Pull down)
98
CD_ON
I
CD mechanism servo power supply control request signal input
99
CDM_ON
I
CD mechanism deck power supply control request signal input
100
COL_SW
I
Illumination color select signal input Not used in this set. (Pull down)
“H”: Two colors selection/initial slave, amber, “L”: Color/slave, amber
Pin No.
Pin Name
I/O
Pin Description
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