Sony CDX-S2250 Service Manual page 33

Pin No. Pin Name
52 KEY ACK
53 TU ATT IN
54 BU IN
55 NCO
56 DAVN
57 NCO
58 UNI SI
59 UNI SO
60 UNI SCK
61 NCO
62 NCO
63 NCO
64 SIRCS
65 NCO
66 NCO
67 NCO
68 FLASH W
69 NCO
70 NCO
71 RC IN1
72 ACC IN
73 TEST IN
74 TEL ATT
75 NCO
76 XKEY ON
77 RESET
78 NCO
79 XOUT
80 XIN
81 VSS1
82 OSC IN
83 OSC OUT
84 VCC3
85 DEMO SEL
86 ATT
87 BUS ON
88 SYS RST
89 EJECT OK SW
90 NCO
91 NCO
92 NCO
93 Z-MUTE
94 NCO
95 NCO
96 NCO
97 NCO
98 CD ON
99 CDM ON
100 NCO
I/O
I Key acknowledgment detect signal input
I Tuner mute zero cross detect signal input
I Back-up power supply detect signal input
O Not used
I RDS data block synchronized detect signal input
O Not used
I SONY bus data input
O SONY bus data output
O SONY bus clock output
O Not used
O Not used
O Not used
I Remote control signal input
O Not used
O Not used
O Not used
I Memory mode select signal input
O Not used
O Not used
I Rotary commander shift key signal input
I Accessory power supply detect signal input
I Test mode detect signal input
I Telephone attenuate detect signal input
O Not used
O A/D converter power supply control signal output
I CPU reset input
O Not used
— Sub-clock output (32.768kHz)
— Sub-clock input (32.768kHz)
— Ground
— Main-clock input (3.68MHz)
— Main-clock output (3.68MHz)
— Power supply pin (+3.3V)
I Demo select signal input
O Audio mute control signal output
O Bus ON signal output
O System reset output
O Eject OK signal output signal
O Not used
O Not used
O Not used
I CD zero cross mute detect signal input
O Not used
O Not used
O Not used
O Not used
I CD servo power control request signal input
I CD deck power control request signal input
O Not used
CDX-S2250/S2250S
Pin Description
33