Sony CDX-M30 Service Manual page 28

CDX-M30
Pin No. Pin Name
51 MD2
52 KEYACK
53 TU_ATTIN
54 BUIN
55 NCO
56 DAVN
57 NCO
58 UNISI
59 UNISO
60 UNISCK
61 to 63 NCO
64 SIRCS
65 to 67 NCO
68 FLASH_W
69 NCO
70 DOOR_SW
71 RC_IN1
72 ACC_IN
73 TESTIN
74 TELATT
75 ILLUIN
76 AD_ON
77 RESET
78 NCO
79 XOUT
80 XIN
81 VSS1
82 OSCIN
83 OSCOUT
84 VCC3
85 INI_RS
86 ATT
87 BUSON
88 SYSRST
89 EJECT_OK_SW
90 to 92 NCO
93 Z-MUTE
94 NCO
95 DEMOSEL
96 INI_COL
97 NCO
98 CD_ON
99 CDM_ON
100 OPEN-MUTE
28
I/O
I Signal input for operation mode designation. (Fixed at L in this set)
I Key acknowledge detection signal input
I Tuner mute zero cross detection signal input (Fixed at L in this set)
I Backup power supply detection signal input
O Not used. (Open)
RDS data block synchronized detection signal input from RDS receiver IC.
I
(Fixed at L in this set)
O Not used. (Open)
I SONY-BUS data signal input
O SONY-BUS data signal output
O SONY-BUS clock signal output
O Not used. (Open)
I Remote control signal input
O Not used. (Open)
I Memory mode select signal input (Fixed at H in this set)
O Not used. (Open)
I Front panel open/close detection signal input
I Rotary commander shift key signal input
I Accessory power supply detection signal input
I Test mode detection signal input (Fixed at H in this set)
I Telephone attenuator detection signal input
I Illumination detection signal input (L: illumination ON, H: illumination OFF)
O A/D converter power supply control signal output
I Reset signal input
O Not used. (Open)
O Sub-clock signal output (32.768 kHz)
I Sub-clock signal input (32.768 kHz)
— Ground
I Main-clock signal input (18.432 MHz)
O Main-clock signal output (18.432 MHz)
— Power supply pin (+3.3 V)
I Rear/sub initial select signal input (H: initial rear)
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 detection signal input
O Not used. (Open)
I Demo select signal input (H: Demo ON)
I Initial color setting signal input (L: white)
O Not used. (Open)
I CD mechanism servo power control request signal input
I CD mechanism deck power control request signal input
O Mute signal output at during the AUX source mode. (L: other, H: keep)
Pin Description