Sony CDX-GT40W Service Manual page 37

Pin No. Pin Name
50 MD1
51 MD2
52 KEYACK
53 TU_ATTIN
54 BUIN
55 NCO
56 DAVN
57 NCO
58 UNISI
59 UNISO
60 UNISCK
61 NCO
62 NCO
63 NCO
64 SIRCS
65 NCO
66 NCO
67 NCO
68 FLASH_W
69 NCO
70 DOOR_SW
71 RC_IN1
72 ACC_IN
73 TESTIN
74 TELATT
75 ILLUIN
76 XKEYON
77 RESET
78 NCO
79 XIN
80 XOUT
81 VSS1
82 OSCIN
83 OSCOUT
84 VCC3
85 SATSEL
86 ATT
87 BUSON
88 SYSRST
89 EJECT_OK_SW
90 NCO
91 NCO
92 NCO
93 Z-MUTE
94 NCO
95 DEMO SEL
96 NCO
97 NCO
98 CD_ON
99 CDM_ON
100 OPEN-MUTE
I/O
I Operation mode setting pin
I Operation mode setting pin
I Key acknowledgment detect signal input
I Not used (Pull up)
I Back-up power supply detect signal input
O Not used (Open)
I Not used (Pull down)
O Not used (Open)
I Bus control data input
O Bus control data output
O Bus control clock output
O Not used (Open)
O Not used (Open)
O Not used (Open)
I Remote control (infrared rays) signal input
O Not used (Open)
O Not used (Open)
O Not used (Open)
I Memory mode select setting pin
O Not used (Open)
I Front panel open/close detect signal input
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
I Illumination on/off control signal input
O A/D converter power supply control signal output
I CPU reset input
O Not used (Open)
I Sub clock input (32.768kHz)
O Sub clock output (32.768kHz)
— Ground
I Main clock input (18.432MHz)
O Main clock output (18.432MHz)
— Power supply pin (+3.3V)
I Demo display setting pin
O Audio mute control signal output
O Bus ON signal output
O System reset output
O CD eject OK signal output
O Not used (Open)
O Not used (Open)
O Not used (Open)
I CD zero cross mute detect signal input
O Not used (Open)
I Demo on/off setting pin at Power ON
O Not used (Open)
O Not used (Open)
I CD servo power control request signal input
I CD deck power control request signal input
O During the AUX source mode signal output
CDX-GT40W/GT400/GT450/GT450S
Pin Description
37