KRC-21SA/SG/SYA/SYG
KRC-266/S
5
MICROCOMPUTER'S TERMINAL DESCRIPTION
●
SYSTEM MICROCOMPUTER LC72366-9592 (IC1 : X14-685x-xx)
Pin No.
Pin name
I/O
Description
Processing Operation
50
SEL1
I
Destination input 1
Hi : KRC-21S
51
SEL2
I
Destination input 2
Hi : KRC-21S
52
SEL3
O
Destination input 3
N.C. (Not used)
53
EQ MUTE
O
Tape equalizer mute on/off output
N.C. (Not used)
54
FWD/REV
I
FWD/REV mode detection input
Lo : REV mode
55
-
O
-
N.C. (Not used)
56
REMO
I
Data input from the remote control
N.C. (Not used)
light sensor
57-60
-
O
-
N.C. (Not used)
61
ACC DET
I
ACC detection input
Hi : ACC ON
62
B.U. DET
I
Momentary power down detection input
Hi : When momentary power down detected or
B.U. OFF, Lo : B.U. ON
63
S METER
I
S-meter input from the F/E
64
PANEL
I
Panel detaching detection input
Lo : Panel not detached
65
GND
I
-
Connected to GND lines.
66
GND
I
-
Connected to GND lines.
67
HOLD
I
MI-COM. HOLD input
Lo : Hold
68
VDD
-
VDD connection terminal
Connected to B.U. 5V lines.
69
GND
I
-
Connected to GND lines.
70
GND
I
-
Connected to GND lines.
71,72
-
O
-
N.C. (Not used)
73
VDD
-
Positive power supply connection terminal
Connected to B.U. 5V lines.
74
GND
I
-
Connected to GND lines.
75
GND
I
-
Connected to GND lines.
76
VSS
-
Ground connection terminal
Connected to GND lines.
77,78
-
O
-
N.C. (Not used)
79
GND
-
TEST terminal 1
Connected to GND lines.
80
XOUT
O
Main clock resonator connection terminal
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9
9
2
8
9
4
2
9
8
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9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
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