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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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