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MICROCOMPUTER'S TERMINAL DESCRIPTION
(X14-) IC1 : µ-COM
PORT No. PORT NAME
41
AFC
42
MUTE
43
AMP MUTE
44
-
45
CH CNT
46
REQ H
47
-
48
SVR
49
AMP STBY
50
BEEP
51,52
-
53
P.CONT
54
ACC DET
55
B.U. DET
56
P.ON
57
ILLUMI
58
FWD/REV
59
-
60
RESET
61
SEL 1
62
R CLK
63
REQ C
64
PACK IN
65
KEY-REQ
66
SEL 0
67
VSS 0
68
VDD 1
69
X2
70
X1
71
IC
72
-
73
XT1
74
VDD 0
75
AVREF 0
76
S METER
77
PHONE
78
NOISE
79
AV CONT
80
-
KRC-16,191,265L/R,26,291
I/O
FUNCTION
O
FM noise detection / Time constant SW.
O
Mute control.
O
Power amplifier mute.
-
-
O
Changer control.
O
Changer request.
-
-
O
SVR control.
O
Power amplifier stand-by.
O
Buzzer signal output.
-
-
O
Power control SW.
I
ACC detection.
I
Back-up detection.
O
Power SW.
O
Illumination SW.
I
Cassette mechanism FWD/REV detection.
-
-
I
System reset signal input.
I
Destination SW.
I
RDS clock.
I
Changer request.
I
Cassette tape pack-in detection.
I
Key signal input detection.
I
Destination SW.
-
GND.
-
5V power supply.
-
Main system clock.
I
Main system clock.
-
GND.
-
-
-
5V power supply.
-
5V power supply.
I
A/D converter reference voltage.
I
S-meter detection.
I
-
I
FM noise detection.
O
A/D converter reference voltage.
-
-
OPERATING CONDITION
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
"H" : S-meter exists.
"L" : S-meter does not exist.
Navigation mute : 2.5V or more.
Telephone mute : 1V or less.
-
-
-
5
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