KRC-108S/188
MICROCOMPUTER’S TERMINAL DESCRIPTION
4
Microcomputer (M38258MCD066FP : IC1 : X14)
•
Terminal description
Pin No.
Pin Name
I/O
Signal
Description
Logic
1
C1
I
(NC)
Not used.
2
VL1
I
VL1
LCD power input.
3-5
P67-65
I
KI0-2
Key return input.
6-9
P64-61
O
KS0-3
Key scan output.
10
ANO
I
SMETER
Signal meter.
11
P57
O
KS4
Key scan output.
12
TOUT
O
BEEP
Beep output.
13
P55
O
(NC)
Not used.
14
P54
O
MOTOR
Mechanism motor ON/OFF.
H: ON
15
P53
I
FF/REW
Mechanism FF/RWD detection.
L: Detected.
16
P52
I
PACK_IN
Mechanism cassette pack-in detection.
H: Detected.
17
P51/INT3
I
KI3
Key return input.
18
P50
I
FWD/REV
Mechanism play direction detection.
H: FWD
19-25 P47-41
O
(NC)
Not used.
26
P40
I
SD
Station detection.
H: Station detected.
27
P77
O
PLL_CLK
IC3 clock output.
28
P76
I/O
PLL_DATA
IC3 data input/output.
29
P75
I
IFC
AM bandwidth.
H: Station detected.
30
P74
O
AM+B
AM power output.
H: ON
31
P73
O
FM+B
FM power output.
H: ON
32
P72
O
SCK
IC2 clock output.
33
P71
I/O
SDA
IC2 data input/output.
34
P70
O
(NC)
Not used.
35
RESET
I
RESET
Reset input.
36,37 P81,80
O
(NC)
Not used.
38
XIN
-
X_IN
Clock input.
39
XOUT
-
X_OUT
Clock output.
40
Vss
-
Vss
Power input (0 V).
41
P27
I
IC2_TYPE1
IC2 constant switching.
42
P26
I
IC2_TYPE2
IC3 constant switching.
43
P25
O
(NC)
Not used.
44
P24
I
SEL1
Destination type switching.
45
P23
I
SEL2
Destination type switching.
46
P22
O
MUTE
Muting ON/OFF.
H: MUTE
47
P21
O
STBY
Power IC standby control.
H: ON
48
P20
O
SVR
Power IC SVR control.
H: OFF
49
P17
I
ACC_DET
Acc detection.
H: ACC OFF
50
P16
I
BU_DET
Momentary power down detection.
H: Power down.
