Sony CDX-GT660US - Page 34

34
CDX-GT610U/GT660U/GT660US
51 MD2 I Operation mode setting pin (Connect to VSS.)
52 KEYACK I Key acknowledgment detect signal input
53 TU ATTIN I Tuner mute zero cross detect signal input Not used in this set.
54 BUIN I Back-up power supply detect signal input
55 NCO O Not used. (Open)
56 DAVN I
RDS (Radio Data System) data block synchronized detect signal input
Not used in this set.
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 to 63 NCO O Not used. (Open)
64 SIRCS I Remote control signal input
65 FL12V ON O 12V power supply control signal output for fluorescent indicator tube
66 FSW OUT O D/D converter oscillator frequency shift control signal output
67 DD ON O 3.3V D/D converter power on/off control signal output for fluorescent indicator tube
68 FLASH W I
Memory mode change signal input Normally “H”: Single chip mode, after reset
“L”: flash write mode
69 NCO O Not used. (Open)
70 DOOR SW I Front panel open/close detect switch signal input
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 ILLUIN I Illumination detect signal input “H”: Illumination off
76 AD ON O A/D converter power supply control signal output
77 RESET I CPU reset signal input
78 NCO O Not used. (Open)
79 XOUT O Low speed operation clock signal output (32.768 kHz)
80 XIN I Low speed operation clock signal input (32.768 kHz)
81 VSS1 — Ground pin
82 OSCIN I High speed operation clock signal input (18.432 MHz)
83 OSCOUT O High speed operation clock signal output (18.432 MHz)
84 VCC3 — Power supply pin (+3.3 V)
85 NCO O Not used. (Open)
86 ATT O Audio mute control signal output
87 BUSON O Bus on signal output
88 SYSRST O System reset signal output
89 EJECT OK SW O Eject OK signal output to CD mechanism unit
90 NCO O Not used. (Open)
91 WAKE UP O Mechanism microcomputer wake up signal output
92 NCO O Not used. (Open)
93 Z MUTE I Mute signal input
94 NCO O Not used. (Open)
95 DEMO SEL I DEMO select signal input “H”: DEMO on, “L”: DEMO off
96 CYRIL SEL I Cyril correspondence discrimination signal input “L”: No correspondence
97 NCO O Not used. (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 OPEN MUTE O Not used. (Open)
Pin No. Pin Name I/O Pin Description