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SECTION
2
DIAGRAMS
2-1.
IC PIN FUNCTION
e [C801 Function Controller
(M50761-291P)
Micro Processor M50761-291P
is used for control the volume up/down, function select and power on/standby by SIRCS
code signal input and power on/standby key code signal input.
Function select output. (one-shot output) (L: PHONO)
Function select output. (one-shot output) (L: CD)
Function select output. (one-shot output) (L: AUX) To ground.
Ground
Ground
Function select output. (one-shot output) (L: TAPE1)
Function select output. (one-shot output) (L: TUNER)
Power supply ON/OFF relay (RY1).control output.
(L: POWER ON, H: POWER OFF) To ground.
TAPE2
O
|Function select output. (one-shot output) (L: TAPE2)
POWER
IN
POWER
ON/STANDBY
key switch input. To ground.
Mode select input. This model is used "L" level only. To ground.
|_| POWER ON/OFF mode
NOT USED
Ground
Reset signal input.
TAPE1
TUNER
POWER
oN
MIO
FP
WH
WH
©
Ceramic viblator connection terminal. (400IIz)
Ceramic viblator connection terminal. (400Hz)
Ground
SIRCS code signal input. (serial input)
18
VOL UP
Volume motor up control output. (contineous output)
VOL DOWN
VDD
Volume motor down control output. (contineous output)
+5V power supply.
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