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TC-K570/K670/K677ES
SECTION 3
PIN DESCRIPTION
©1C701
M50941-483SP(MICRO
COMPUTER)
The M50941-483SP
function are-described below.
1
| Vrer
Internal A/D port reference voltage input.
2
KEY 7
Key input port. OV = OPEN/CLOSE,
1V = STOP, 2V = REW, 3V = FF, 4V = REC.
3
KEY 6
I
key input port. OV = PLAY,
IV = PAUSE,
2V = REC MUTE.
.
4
KEY 5
I
Key input port. OV = RESET,
1V = MEMORY,
2V = DISPLAY MODE, 3V = MONITOR.
5
METER-L
|
Signal input for level meter-L.
6
METER-R
I
Signal
input for level meter-R.
7
TIMER
I
Timer REC/PLAY switch input. OV = TIMER REC, 1V = TIMER PLAY, 2V = OFF.
8
T. PULSE
I
Take-up reel base sensor input.
9
S. PULSE
I
Supply reel base sensor input.
10
AMS. SIG
I
AMS signal input. No song detected = Low. Song detected = High.
1]
BIAS
0
Bias oscillation on and off control.
12
MO3V
0
Motor speed control.
STOP/PLAY = Low, FF/REW = High.
18
M04, 5V
0
Motor speed control.
STOP/PLAY = High, FF/REW = Low.
14
MO-FWD
0
Reel motor rotates.
15
MO-REV
0
Reel motor rotates in reverse.
16
MO-DOWN
0
Head base DOWN output of the mechanical block.
17
MO-UP
0
Head base UP output of the mechanical block.
18
HALF-SW
I
HALF switch input of the mechanical block.
19
REC-SW
I
REC switch input of the mechanical block.
20
DOOR-SW
I
DOOR switch input of the mechanical block.
21
CLOSE-SW
I
CLOSE switch input of the mechanical block.
22
OPEN-SW
I
OPEN switch input of the mechanical block.
23
POWER-OUT
0
"Low" for power off procedure after POWER switch is turned off.
24
POWER-IN
I
Power (AC) off detection.
25
|
Remote control signal input.
26
oe
GND
27
I
System reset input.
28
I
Clock input
(4. 19MHz).
29
0
Clock output.
30
_
Not used.
31
zc
Not used.
32
Ves
=
GND
33
Not used.
34°
| PATS
I
|
|
Rotary encoder input to detect the position of the head base of the mechanical block.
37
PATO
I
38
ZV
=
Power supply for driving the fluorescent
indicator tube.
39
FL~p
0
|
|
|
Segment data output for the fluorescent indicator tube FL751.
54
FL-a
0
55
FL-G5
0
|
|
|
Common data output for the fluorescent indicator tube FL751.
59
FL-G1
0
60
MONI TOR
0
Source monitor control.
Low = TAPE, High = SOURCE.
61
REC-MUTE
0
REC MUTE control.
Low = MUTE.
62
LINE-MUTE
0
LINE MUTE control.
Low = MUTE.
63
AVec
i
Analog power supply(+5V).
64
Vec
=
Power supply(+5V).
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