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5-1
SL
V
V
-KA177/KA200/KF300/XA127/XF247
SECTION 5
INTERF
A
CE,
IC PIN FUNCTION DESCRIPTION
5-1. SYSTEM CONTROL – VIDEO BLOCK INTERFACE (MA-308 BOARD IC401)
Signal
PB
RF SWP
QVD
REC P
C SYNC
SP/EP
Pin No.
MA-308
IC401
@¡
MA-308
IC401
!•
MA-308
IC401
!£
MA-308
IC401
!§
MA-308
IC401
*¢
MA-308
IC401
!∞
STOP/
FF/
REW
H
∗
1
L
L
∗
3
∗
4
TAPE
LOADING
H
∗
1
L
L
∗
3
∗
4
TAPE
UNLOADING
H
∗
1
L
L
∗
3
∗
4
PB
L
∗
1
∗
2
L
∗
3
∗
5
I/O
O
O
O
O
I
O
REC
H
∗
1
L
L
∗
3
∗
4
REC
•
PAUSE
H
∗
1
L
H
∗
3
∗
4
∗
1.
Synchronized with drum rotation. 30 Hz 50% duty pulse.
∗
2.
Normally “L”. “H” when videl signal is not generated.
∗
3.
Composite sync signal (positive).
∗
4.
Selected by SP/EP mode. SP mode: “L”, EP mode: “H”.
∗
5.
Selected by tape recording mode.
5-2. SYSTEM CONTROL – SERVO PERIPHERAL CIRCUIT INTERFACE (MA-308 BOARD IC401)
Signal
CTL IN+
CTL IN–
DRM PG
DRM FG
CAP FG
CAP RVS
CAP ERR
DRM ERR
Pin No.
MA-308
IC401
(™
MA-308
IC401
(¡
MA-308
IC401
*§
MA-308
IC401
*¶
MA-308
IC401
*∞
MA-308
IC401
&§
MA-308
IC401
&¶
MA-308
IC401
&•
I/O
I/O
I/O
I
I
I
O
O
O
STOP
∗
8
∗
8
∗
3
∗
4
H/L
H/L
L
∗
7
FF
∗
2
∗
2
∗
3
∗
4
∗
5
H
∗
7
∗
7
REW
∗
2
∗
2
∗
3
∗
4
∗
5
L
∗
7
∗
7
TAPE
LOADING
∗
8
∗
8
∗
3
∗
4
∗
6
H
∗
7
∗
7
TAPE
UNLOADING
∗
8
∗
8
∗
3
∗
4
∗
6
L
∗
7
∗
7
PB
∗
1
∗
1
∗
3
∗
4
∗
5
H
∗
7
∗
7
REC
∗
1
∗
1
∗
3
∗
4
∗
5
H
∗
7
∗
7
∗
1.
30 Hz pulse.
∗
2.
Pulse of period in proportion to tape speed.
∗
3.
30 Hz “H” pulse.
∗
4.
360 Hz pulse.
∗
5.
Pulse of period in proportion to tape speed.
∗
6.
Unstable period pulse.
∗
7.
DC voltage 1~5V.
∗
8.
Hi-Z (2.5V).
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