Pin Specifications for the Ports on the BA42B System
Figure A–1 Pin Specifications for the Ports on the BA42B System
-12 V dc (Blue)
Ground (Black)
Ground (Black)
Ground (Black)
+5.1 V dc (Red)
+5.1 V dc (Red)
+3.5 V dc to 5.25 V dc (Brown)
+5.1 V dc (Red)
+12.1 V dc (Orange)
+5.1 V dc (Red)
Ground (Black)
Ground (Black)
-9 V dc (Yellow)
-9 V dc Return (White)
+3.3 V dc
Ground Connection
+3.3 V dc Return
+12.1 V dc (Orange)
Ground (Black)
Ground (Black)
+5.1 V dc (Red)
+12.1 V dc (Orange)
Ground (Black)
Ground (Black)
+5.1 V dc (Red)
+5 V dc (pullup)
Tx Data +
Tx Data -
Rx Data +
Rx Data -
3 kohm to ground
+5 V dc (pullup)
Tx Data +
Tx Data -
Rx Data +
Rx Data -
3 kohm to ground
+5 V dc (pullup)
Tx Data +
Tx Data -
Rx Data +
Rx Data -
3 kohm to ground
Chassis Gnd (Opt)
TX
Rx
RTS
CTS
DSR
Signal Ground
CD
SPD
LLKB
DTR
RI
DSRS
TMI
Chassis Ground
Col
Tr
R
+12 V dc Return
Collision -
Transmit -
Receive -
+12 V dc, fuse protected
Asynchronous
Communications
Option
Synchronous
Communications
Option
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
4
5
6
7
8
12
18
20
22
23
25
1
2
3
5
6
9
10
12
13
1
2
3
4
5
6
7
8
9
10
11
12
13
14
100 V ac to 120 V ac
or
220 V ac to 240 V ac
at 50 Hz or 60 Hz
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
1
2
3
4
1
2
3
4
Power
Supply
CPU
Module
MMJ
Port 0
MMj
Port 1
MMJ
Port 3
Asynchronous
Modem Control
Port 2
Standard
Ethernet
Port
ThinWire
Ethernet Port
(Coaxial)
Q-Bus
To and from
Internal
SCSI Devices
To and from
External
SCSI Devices
(See Table A-4)
To and from
DSSI Devices
Asynchronous Option I/O
Synchronous Option I/O
NOTE: Asynchronous Option I/O
(See Table A-1 for 8-data or 16-data only option.
See Table A-2 for 8-modem control option)
Synchronous Option I/O
(See Table A-3)
MLO-009944
A–2 Pin Specifications for the Ports on the BA42B System