Atari 520ST

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APPENDIX D
CONNECTOR PINOUT SPECIFICATIONS
Power
1
—
+5
VDC
2
—
Not
Connected
3
—
Ground
4—
+12
VDC
5
12
VDC
6
—
+
5
VDC
7
—
Ground
Midi
Out
1
—
THRU Transmit
Data
2
—
Shield Ground
3
—
THRU Loop
Return
4
—
OUT Transmit Data
5
—
OUT Loop
Return
Midi In
1
—
Not Connected
2
—
Not Connected
3
—
Not Connected
4
—
IN
Receive Data
5
—
IN Loop Return
Monitor
1
—
Audio Out
2
—
Reserved
3
—
General Purpose
Output
4
—
Monochrome Detect
5
—
Audio In
6
—
Green
7
—
Red
8
—
Ground
9
—
Horizontal Sync
10
—
Blue
1 1
—
Monochrome
1
2
—
Vertical
Sync
1
3
—
Ground
Note:
All
pinout diagrams
are
from
the external port view.