6-2
6-3. SYSTEM CONTROL — SYSTEM CONTROL PERIPHERAL CIRCUIT INTERFACE (MA-286 BOARD IC160)
Signal
ASURA RESET
ASURA CS
S IN 0
S OUT 0
S CLK
Pin No.
MA-286 IC160
$º
MA-286 IC160
$¢
MA-286 IC160
$∞
MA-286 IC160
$§
MA-286 IC160
$¶
I/O
I
I
I
O
I
I/O Level
Normally “H”, “L” when service interruption is detected or restored.
Chip select signal from timer microprocessor. V period “L” pulse.
Serial communication data from timer microprocessor. V period “ L” pulse.
Serial communication data to timer microprocessor. V period “L” pulse.
Serial communication clock from timer microprocessor. V period “L” pulse.
6-4. SYSTEM CONTROL — Hi-Fi AUDIO BLOCK INTERFACE (MA-286 BOARD IC160)
*1. 25 Hz 50 % duty pulse approx. 5 msec delayed from RF SW P.
6-2. SYSTEM CONTROL — MECHANISM INTERFACE (MA-286 BOARD IC160)
*1. Uncertainly.
*2. “L” when erasing protection tab is bent. “H” when not bent.
*3. Pause of period in proportion to real rotating speed.
*4. Approx. 2 msec period “H” pulse.
*5. Pulse at tape running.
*6. “L” when tape running and CAP RVS is “H”.
Signal
CAM2 CW
CAM1 V
MODE 1
MODE 2
MODE 3
MODE 4
REC PRF
T REEL FG
S REEL FG
T/E LED
CAP PWM
CAP STOP
CAP RVS
CAP DA
T SENS
S SENS
Pin No.
MA-286 IC160
9
MA-286 IC160
0
MA-286 IC160
@™
MA-286 IC160
@¡
MA-286 IC160
@º
MA-286 IC160
!ª
MA-286 IC160
!∞
MA-286 IC160
^¢
MA-286 IC160
^£
MA-286 IC160
#™
MA-286 IC160
*¢
MA-286 IC160
#∞
MA-286 IC160
&™
MA-286 IC160
&£
MA-286 IC160
^¡
MA-286 IC160
^™
I/O
I/O
I/O
I
I
I
I
I
I
I
O (O.D)
O (O.D)
O (O.D)
O
O
I
I
EJECTED
Hi-Z
Hi-Z
H
L
L
L
L
H/L
H/L
*4
*8
L
H
*4
*4
CASSETTE
LOADING
H
H
L
L
L
H
*2
H/L
H/L
*4
*8
L
*4
*4
CASSETTE
UNLOADING
L
H
L
L
L
H
*2
H/L
H/L
*4
*8
L
*4
*4
TAPE
THREADING
H
Hi-Z
*1
*1
*1
*1
*2
H/L
*3
*4
*8
H
L
*7
*7
TAPE
UNTHREADING
L
Hi-Z
*1
*1
*1
*1
*2
H/L
*3
*4
*8
H
H
*7
*7
STOP
Hi-Z
Hi-Z
H
L
H
H
*2
H/L
H/L
*4
*8
L
H/L
*7
*7
FF
Hi-Z
Hi-Z
H
L
H
L
*2
*3
*3
*4
*9
H
L
*7
*7
REW
Hi-Z
Hi-Z
H
L
H
L
*2
*3
*3
*4
*9
H
H
*7
*7
PB
Hi-Z
Hi-Z
H
H
L
L
*2
*3
*3
*4
*8
H
L
*7
*7
PB PAUSE
Hi-Z
Hi-Z
H
H
H
L
*2
H/L
H/L
*4
*10
L
L
*7
*7
SLOW
Hi-Z
Hi-Z
H
H
H
L
*2
*3
*3
*4
*11
*5
L/*5
*7
*7
x 2
Hi-Z
Hi-Z
H
H
L
L
*2
*3
*3
*4
*8
H
L
*7
*7
CUE
Hi-Z
Hi-Z
H
H
L
L
*2
*3
*3
*4
*9
H
L
*7
*7
REVIEW
Hi-Z
Hi-Z
L
H
H
L
*2
*3
*3
*4
*9
H
H
*7
*7
REC
Hi-Z
Hi-Z
H
H
L
L
*2
*3
*3
*4
*8
H
L
*7
*7
REC
PAUSE
Hi-Z
Hi-Z
H
H
H
L
*2
H/L
H/L
*4
*10
L
L
*7
*7
*7. Normally “L”. 2 msec period “H” pulse when tape top or tape end is detected.
*8. Captra Normal Duty pulse becomes 1.6V by LPF.
*9. Captra FR Duty pulse becomes 3.189V by LPF.
*10. Captra Denji Duty pulse becomes 0.31V by LPF.
*11. Captra Mid Duty pulse becomes 1.426V by LPF.
Captra Low Duty pulse becomes 0.684V by LPF.
Signal
AF ENV
A MUTEN
AF REC P
AF SWP
FULL ERS
Pin No.
MA-286 IC160
%ª
MA-286 IC160
#¡
MA-286 IC160
2
MA-286 IC160
`⁄‚‚
MA-286 IC160
#§
I/O
I
O (O.D)
O
O
O (O.D)
TOP/FF/REW
L
L
*1
H
TAPE
LOADING
L
L
*1
H
TAPE
UNLOADING
L
L
*1
H
PB
*1
L
*1
H
PB PAUSE
H
L
*1
H
SLOW
H
L
*1
H
x 2
H
L
*1
H
CUE
H
L
*1
H
REVIEW
H
L
*1
H
REC
L
H
*1
L
REC PAUSE
L
L
*1
H
AF RF envelope signal input terminal for automatic tracking.
