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CDX-GT50W/GT500/GT500EE/GT550
Pin No. Pin Name I/O Pin Description
52 KEYACK I Key acknowledgment detect signal input
53 TU ATTIN I Tuner mute zero cross detect signal input (AEP, UK model only)
54 BUIN I Back-up power supply detect signal input
55 NCO O Not used. (Open)
56 DAVN I RDS data block synchronized detect signal input (AEP, UK model only)
57 NCO O Not used. (Open)
58 UNISI I SONY bus data signal input
59 UNISO O SONY bus data signal output
60 UNISCK O SONY bus clock signal output
61 NCO O Not used. (Open)
62 NCO O Not used. (Open)
63 DOOR IND O CD IN LED control signal output H: On
64 SIRCS I Remote control signal input
65 NCO O Not used. (Open)
66 FSW OUT O
D/D converter oscillater frequency shift control signal output
L: 300 kHz, H: 400 kHz
67 DISP FLASHW I Display IC flash ROM write signal input
68 FLASH W I Memory mode select signal input L: Write mode
69 NCO O Not used. (Open)
70 DOOR SW I Panel open/ close detect signal input H: Panel open
71 RC IN1 I Rotary commander shift key signal input
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 ILUIN I Auto dimmer illumination detect signal input H: Ill off
76 XKEYON O A/D converter power supply control signal output
77 RESET I CPU reset signal input
78 NCO O Not used. (Open)
79 XIN I Sub-clock input (32.768 kHz)
80 XOUT O Sub-clock output (32.768 kHz)
81 VSS1 — Ground pin
82 OSC OUT O Main-clock output (18.432 MHz)
83 OSC IN I Main-clock input (18.432 MHz)
84 VCC3 — Power supply pin (+3.3 V)
85 SEL2 O Not used in this set. (Open)
86 SEL5 O Not used in this set. (Open)
87 BUSON O Bus on signal output
88 SEL3 O Not used in this set. (Open)
89 EJECT OK O Eject OK signal output
90 to 92 NCO O Not used. (Open)
93 Z-MUTE I CD zero cross mute detect signal input
94, 95 NCO O Not used. (Open)
96 CYRIL SEL I Cyril select signal input L: Cyril off, H: Cyril on
97 SEL4 O Not used in this set. (Open)
98 CD ON I CD mechanism power control request signal input
99 CDM ON I CD mechanism deck power control request signal input
100 NCO O Not used. (Open)