Sony CDX-GT20W 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 UNISI
59 UNI SO
60 UNI SCK
61 611 SEL
62 WMA
63 NCO
64 SIRCS
65 to 67 NCO
68 FLASH W
69, 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 DEMOSEL
86 ATT
87 BUS ON
88 SYS RST
89 EJECT OK SW
90 to 92 NCO
93 Z-MUTE
94 to 97 NCO
98 CD ON
99 CDM ON
100 NCO
CDX-GT20W/GT200/GT200E/GT200S/GT250S
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. (Open)
I RDS data block synchronized detect signal input
O Not used. (Open)
I SONY bus data signal input
O SONY bus data signal output
O SONY bus clock signal output
I Mechanism deck select signal input
I WMA select signal input
O Not used. (Open)
I Remote control signal input
O Not used. (Open)
I Memory mode select signal input
O Not used. (Open)
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. (Open)
O A/D converter power supply control signal output
I CPU reset signal input
O Not used. (Open)
O Sub-clock output (32.768 kHz)
I Sub-clock input (32.768 kHz)
— Ground pin
I Main-clock input (3.68 MHz)
O Main-clock output (3.68 MHz)
— Power supply pin (+3.3 V)
I DEMO select signal input
O Audio mute control signal output
O Bus on signal output
O System reset signal output
O Eject OK signal output
O Not used. (Open)
I CD zero cross mute detect signal input
O Not used. (Open)
I CD mechanism power control request signal input
I CD mechanism deck power control request signal input
O Not used. (Open)
Pin Description
33