Ethernet (10/100base-t and -tx) connector (cn20) – IBM BDM-610000049 User Manual
Page 57
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BDM-610000049
Rev G
Chapter 3: Connecting the cpuModule
47
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 31 provides
the pinout of the Ethernet connector.
Table 31
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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