Ethernet (10/100base-t and -tx) connector (cn20) – IBM CMX58886CX User Manual
Page 49
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BDM-610000050
Rev A
Chapter 3: Connecting the cpuModule
41
Ethernet (10/100Base-T and -TX) Connector (CN20)
The functionality of the Ethernet port is based on the Intel 82562 Fast Ethernet PCI controller. Table 27 provides
the pinout of the Ethernet connector.
Table 26
Ethernet Connector (CN20)
RJ-45 Pin
10-Pin DIL Pin
Signal
Function
In/Out
3
1
RX+
Receive+
in
6
2
RX–
Receive–
in
1
5
TX+
Transmit+
out
2
6
TX–
Transmit–
out
4
3
CT
Termination connected to pin 4
—
5
4
CT
Termination connected to pin 3
—
7
7
CT
Termination connected to pin 8
—
8
8
CT
Termination connected to pin 7
—
—
9
AGND
Ground
—
—
10
AGND
Ground
—
9
7
5
3
1
AGND
CT
TX+
CT
RX+
AGND
CT
TX–
CT
RX–
10
8
6
4
2
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