Technics QUARTZ SA-R177 - IC Terminal Functions

SA-R177
TERMINAL FUNCTION OF IC
e 10901 (LC6554H4097): Microcomputer
Function Function
Division
Segment signal output Level shift control output
Key return signal input
Not used, connected to GND
Key return signal input
Power supply terminal
Power ON/OFF det. terminal
(Not used, open)
Volume motor drive output
STEREO Stereo signal det. terminal
S Received signal det. terminal
D I
Not used, connected to GND
DP 1/0 Cassette deck control terminal 42
RELAY
Oo
Relay
control
output
43
Power
supply
terminal
(negative voltage)
DK | Cassette deck control terminal
START —- Not used, connected to GND
STOP — Not used, open
FM AUTO/MONO select signal
MONO oO output
Segment signal output
Pay Muting control output for tuner
circuit
Muting control output for amplifier
circuit
Muting control output for amplifier
o circuit
-
Power
supply
terminal
_ Not used, connected to GND (positive voltage)
fe)
— Ground terminal
Oscillator terminal
ie)
RES | Reset signal input
Digit signal and key scan signal
PFO/DA
[@)
Serial
data
output
output
PFI/CK Clock signa! terminal for serial data
PF2/CE Chip enable terminal
PF3/INT Remote control input
Not used, connected to GND
~12—-