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5-3. SYSTEM CONTROL — MECHANISM INTERFACE (MA-359 BOARD IC160)
Signal
Pin No.
I/O
EJECTED
9
CAM2
HI-Z
L
@¡
MODE 1 (*8)
I
H
@º
MODE 2 (*8)
I
H
!ª
MODE 3 (*8)
I
L
!•
MODE 4 (*8)
I
L
!∞
CIN (REC PRF)
I
H
&¶
T REEL FG
I
H/L
&§
S REEL FG
I
H/L
#™
T/E LED
O (O.D)
*4
#£
CAP STOP
O (O.D)
L
#º
CAP RVS
O
H
^¡
T SENS
I
*4
^™
S SENS
I
*4
*1. Uncertainly.
*2. "L" when erasing protection tab is bent. "H" when not bent.
*3. Pause of period in proportion to reel rotating speed.
*4. Approx. 2 msec period "H" pulse.
*5. Pulse at tape running.
*6. Normally "L". 2 msec period "H" pulse when tape top or tape end is detected.
5-4. SYSTEM CONTROL — SYSTEM CONTROL PERIPHERAL CIRCUIT INTERFACE (MA-359 BOARD IC160)
Signal
Pin No.
I/O
$º
ASURA RESET
I
Normally "H", "L" when service interruption is detected or restored.
@§
ASURA CS
I
Chip select signal from timer microprocessor. V period "L" pulse.
@£
S IN 0
I
Serial communication data from timer microprocessor. V period " L" pulse.
@¢
S OUT 0
O
Serial communication data to timer microprocessor. V period "L" pulse.
@∞
S CLK
I
Serial communication clock with timer microprocessor. V period "L" pulse.
5-5. SYSTEM CONTROL — AUDIO BLOCK INTERFACE (MA-359 BOARD IC160)
STOP/FF/
Signal
Pin No.
I/O
REW
%ª
AF ENV
I
AF RF envelope signal input terminal for automatic tracking.
#¡
A MUTE
O (O.D)
L
2
AF REC P
O
L
`⁄‚‚
AF SWP
O
*1
#¢
FULL ERS
O (O.D)
H
*1. 30 Hz 50 % duty pulse approx. 5 msec delayed from RF SW P.
CASSETTE
CASSETTE
TAPE
TAPE
STOP
LOADING
UNLOADING
THREADING
UNTHREADING
H
L
H
L
*7
L
L
*1
*1
H
L
L
*1
*1
H
L
L
*1
*1
H
H
H
*1
*1
L
*2
*2
*2
*2
*2
H/L
H/L
H/L
H/L
H/L
H/L
H/L
*3
*3
H/L
*4
*4
*4
*4
*4
L
L
H
H
L
L
H
H/L
*4
*4
*6
*6
*6
*4
*4
*6
*6
*6
*7. When transition to UNLOADING direction : "L".
When transition to LOADING direction : "H".
When CAM MOTOR is stopped : Hi-Z.
*8. When RVS slow : Mode 1="L"
When RVS slow : Mode 2="L"
When RVS slow : Mode 3="H"
When RVS slow : Mode 4="L"
I/O Level
TAPE
TAPE
PB
PB PAUSE
LOADING
UNLOADING
L
L
*1
H
L
L
L
L
*1
*1
*1
*1
H
H
H
H
FF
REW
PB
PB PAUSE
SLOW
*7
*7
*7
*7
*7
H
H
H
H
H
H
H
L
L
L
L
L
L
L
L
H
H
H
L
L
*2
*2
*2
*2
*2
*3
*3
*3
H/L
*3
*3
*3
*3
H/L
*3
*4
*4
*4
*4
*4
H
H
H
L
*5
L
H
L
L
L/*5
*6
*6
*6
*6
*6
*6
*6
*6
*6
*6
SLOW
x 2
CUE
REVIEW
H
H
H
H
L
L
L
L
*1
*1
*1
*1
H
H
H
H
REC
x 2
CUE
REVIEW
REC
PAUSE
*7
*7
*7
*7
*7
H
H
L
H
H
L
L
L
L
L
L
L
H
L
L
L
L
L
L
L
*2
*2
*2
*2
*2
*3
*3
*3
*3
H/L
*3
*3
*3
*3
H/L
*4
*4
*4
*4
*4
H
H
H
H
L
L
L
H
L
L
*6
*6
*6
*6
*6
*6
*6
*6
*6
*6
REC
REC PAUSE
L
L
H
L
*1
*1
L
H
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