Read Sony CDX-R3350 / CDX-R3350C Service Manual online
32
CDX-R3350/R3350C
Pin No.
Pin Name
I/O
Pin Description
60
UNISCK
O
SONY BUS clock signal output
61 to 63
NCO
O
Not used. (Open)
64
SIRCS
I
Remote control signal (infrared rays) input
65 to 67
NCO
O
Not used. (Open)
68
FLASH W
I
Memory mode change signal input
Normally “H” input: Single chip mode, “L” after reset: Flash white mode
69
NCO
O
Not used. (Open)
70
RETRA SW
I
RETRA CD door open/close detection switch signal input
“H”: CD door close, “L”: CD door open
71
RC IN1
I
Rotary commander shift key signal input
72
ACC IN
I
Acssesory power supply detection signal input
73
TESTIN
I
Test mode detection signal input
74
TELATT
I
Telephone attenate detection signal input
75
NCO
O
Not used. (Open)
76
XKEYON
O
A/D converter power supply control signal output
77
RESET
I
Reset signal input
78
NCO
O
Not used. (Open)
79
XIN
I
Low speed operation clock signal input (32.768 kHz)
80
XOUT
O
Low speed operation clock signal output (32.768 kHz)
81
VSS1
—
Ground pin
82
OSCOUT
O
High speed operation clock signal output (18.432 MHz)
83
OSCIN
I
High speed operation clock signal input (18.432 MHz)
84
VCC3
—
Power supply pin
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
EJEECT OK SW
O
Eject OK signal output
90
CD RST
O
Not used in this set. (Open)
91
CD A0
O
Not used in this set. (Open)
92
CD STB
O
Not used in this set. (Open)
93
CD MUTE R
I
Z-mute signal input
94
CD MUTE L
O
Not used in this set. (Open)
95
CD INSW
O
Not used in this set. (Open)
96
CD SELFSW
O
Not used in this set. (Open)
97
CD LM LO
O
Not used in this set. (Open)
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
CD LIMIT
O
Not used in this set. (Open)
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