Read Sony CDX-S2050 Service Manual online
31
CDX-S2050
52
KEY ACK
I
Key acknowledgment detect signal input
53
TU ATT IN
I
Tuner mute zero cross detect signal input
54
BU IN
I
Back-up power supply detect signal input
55
CD INTQ
I
CD text pack synchronized signal input
56
DAVN
I
RDS data block synchronized detect signal input
57
NCO
O
Not used
58
UNI SI
I
SONY bus data input
59
UNI SO
O
SONY bus data output
60
UNI SCK
O
SONY bus clock output
61
NCO
O
Not used
62
NCO
O
Not used
63
NCO
O
Not used
64
SIRCS
I
Remote control signal input
65
NCO
O
Not used
66
NCO
O
Not used
67
NCO
O
Not used
68
FLASH W
I
Memory mode select signal input
69
NCO
O
Not used
70
NCO
O
Not used
71
RC IN1
I
Rotary commander shift key signal input
72
ACC IN
I
Accessory power supply detect signal input
73
TEST IN
I
Test mode detect signal input
74
TEL ATT
I
Telephone attenuate detect signal input
75
NCO
O
Not used
76
XKEY ON
O
A/D converter power supply control signal output
77
RESET
I
CPU reset input
78
NCO
O
Not used
79
XOUT
—
Sub-clock output (32.768kHz)
80
XIN
—
Sub-clock input (32.768kHz)
81
VSS1
—
Ground
82
OSC IN
—
Main-clock input (3.68MHz)
83
OSC OUT
—
Main-clock output (3.68MHz)
84
VCC3
—
Power supply pin (+3.3V)
85
DEMO SEL
I
Demo select signal input
86
ATT
O
Audio mute control signal output
87
BUS ON
O
Bus ON signal output
88
SYS RST
O
System reset output
89
CD RFOK
I
CD shutter-open information signal input
90
CD RST
O
CD servo reset output
91
CD A0
O
CD servo command/parameter signal output
92
CD STB
O
CD servo daata strobe signal output
93
CD MUTE R
I
CD zero cross mute detect signal input (Rch)
94
CD MUTE L
I
CD zero cross mute detect signal input (Lch)
95
CD IN SW
I
CD disc-in switch detect signal input
96
CD SELF SW
I
CD self switch signal input
97
CD LM LO
O
CD loading motor control signal output
98
CD LM EJ
O
CD eject motor control signal output
99
CD D SW
I
CD D-switch detect signal input
100
CD LIMIT
I
CD limit switch detect signal input
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