Led Flash - Aiwa CT-X420 Service Manual

Pin No. Pin Name
57 V-REF
58

LED FLASH

59 DATA
60 CLK
61 CE
62 BEEP
63 T-MUTE
64 REMO-IN
65 INTR 2
66 TEST
67 HOLD
68 SD-IN
69 IF-IN
70, 71 DO1, DO2
72 GND
73 FMIN
74 AMIN
75 VDD
_____________
76 RESET
77 XOUT
78 XIN
79 VXT
80 GND
I/O
I Reference voltage pin
This function is enabled when the ACC input is "L" and PANEL input is "L". "H"
O causes flashing for 0.1 s and "L" causes 0.9 s flashing. This output is disabled when the
LED FLASH jumper is "H".
I/O
O
For communications with LCD driver and key input IC TC9297F.
O
O Buzzer output
O Tuner muting output
I Interrupt of remote control signal
I Not used.
I Test mode control input
I Monitors that the power is turned on with ignition switched on.
I SD signal input
I IF signal input
O DO outputs
– GND
I FM/AM local oscillator signal input
– VDD terminal
I Reset input
O
I For the connection of a crystal oscillator
–
–
GND
16
Description