5-1
SECTION 5
INTERFACE, IC PIN FUNCTION DESCRIPTION
SLV-EX5/EX8S/EX9S
TAPE
TAPE
PB
•
REC
•
Signal
Pin No.
I/O
STOP
FF
REW
THREAD-
UNTHREAD-
PB
PAUSE
SLOW
×
2
CUE
REVIEW
REC
PAUSE
ING
ING
CAP QR
MA-377
O
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
*
2
Hi-Z
Hi-Z
Hi-Z
Hi-Z
Hi-Z
IC101
of
DRUM PG
MA-377
I
*
3
*
1
*
1
*
4
*
4
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
IC101
el
DRUM FG
MA-377
I
*
3
*
6
*
6
*
4
*
4
*
6
*
6
*
6
*
6
*
6
*
6
*
6
*
6
IC101
ek
CAP FG
MA-377
I
H/L
*
5
*
5
*
4
*
4
*
5
H/L
*
5
*
5
*
5
*
5
*
5
H/L
IC101
r;
CAP VS
MA-377
O
*
7
*
7
*
7
*
7
*
7
*
8
*
7
*
7
*
8
*
8
*
8
*
8
*
7
IC101
wg
DRUM VS
MA-377
O
*
9
*
9
*
9
*
9
*
9
*
9
*
9
*
9
*
9
*
9
*
9
*
9
*
9
IC101
wh
PB
•
REC
•
Signal
Pin No.
PB
PAUSE
SLOW
×
2
CUE
REVIEW
REC
PAUSE
RF SWP
MA-377
*
1
*
1
*
1
*
1
*
1
*
1
*
1
*
1
IC101
wf
QVD
MA-377
*
2
*
3
*
3
*
3
*
3
*
3L
L
IC101
wj
C SYNC
MA-377
*
4
*
4
*
4
*
4
*
4
*
4
*
4
*
4
IC101
tf
5-1.
SYSTEM CONTR
OL
A
CE (MA-377 BO
ARD IC101)
∗
1.
25 Hz pulse with 50% duty cycle. Synchronized with rotation of drum.
∗
2.
Normal PB
“L
”. V period
“H
” pulse when
×
1.
∗
3.
V period
“H
” pulse
.
∗
4.
Composite sync signal (positive polarity).
5-2.
SYSTEM CONTR
OL
–
SER
V
O PERIPHERAL CIRCUIT INTERF
A
CE (MA-377 BO
ARD IC101)
∗
1.
25 Hz (P
AL), 30 Hz (NTSC) pulse
.
∗
2.
Pulse at tape r
unning.
∗
3.
“L
” when drum rotation stop
.
∗
4.
Unstab
le per
iod pulse
.
∗
5.
Pulse of period in propor
tion to tape speed.
∗
6.
300 Hz (P
AL), 360 Hz (NTSC) pulse
.
∗
7.
Pulse at tape r
unning.
∗
8.
Appro
x.
2 msec per
iod
“H
” or
“L
” pulse.
∗
9.
Appro
x.
1.5 msec per
iod
“H
” or
“L
” pulse
.
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