IBM 4846-545 Service Guide - Page 143
Ethernet, connector
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Connector-pin assignments 15-pin serial connector: The 15-pin serial connector is a female connector. 8 1 15 9 Table 36. Assignments for 15-pin serial connector Pin Connector Pin 1 Carrier detect 8, 9 2 3 4 5 6 7, 10 Receive data 11 Transmit data 12 Data terminal ready 13 Ground 14 Ground 15 +5 V dc at 0.5 A maximum Ethernet connector Connector +12 V dc at 0.5 A maximum Distributed display present Data set ready Request to send Clear to send Ring indicate 8 1 Table 37. Ethernet connector-pin assignments Pin Signal I/O Pin Signal I/O 1 TxD+ O 5 Ground 2 TxD− O 6 RxD− I 3 RxD+ I 7 Ground 4 Ground 8 Ground Appendix C. System specifications and planning information 121
15-pin
serial
connector:
The
15-pin
serial
connector
is
a
female
connector.
8
15
9
1
Table
36.
Assignments
for
15-pin
serial
connector
Pin
Connector
Pin
Connector
1
Carrier
detect
8,
9
+12
V
dc
at
0.5
A
maximum
2
Receive
data
11
Distributed
display
present
3
Transmit
data
12
Data
set
ready
4
Data
terminal
ready
13
Request
to
send
5
Ground
14
Clear
to
send
6
Ground
15
Ring
indicate
7,
10
+5
V
dc
at
0.5
A
maximum
Ethernet
connector
8
1
Table
37.
Ethernet
connector-pin
assignments
Pin
Signal
I/O
Pin
Signal
I/O
1
TxD+
O
5
Ground
2
TxD²
O
6
RxD²
I
3
RxD+
I
7
Ground
4
Ground
8
Ground
Connector-pin
assignments
Appendix
C.
System
specifications
and
planning
information
121