rtd cpuModules CME34BT, User Manual, Page: 55 / 110

BDM-610000088 Rev A Chapter 3: Connecting the cpuModule 47
Ethernet (10/100/1000Base-T and -TX) Connector (CN20, CN30)
This connector provides a 10/100/1000Base-T Ethernet connection. Table 23 provides the pinout of the
Ethernet connector. For 1000Base-T, all four pairs are used for transmit and receive.
To use the onboard 10/100/1000 Ethernet controller, Ethernet must be enabled in the BIOS.
When enabled, the multi-color LED will blink to indicate an Ethernet connection. For more information,
refer to the Multi-Color LED section on page 68.
Table 23 Ethernet Connector (CN20 and CN30)
RJ-45
Pin
10-Pin DIL
Pin
Signal Function
3 1 B+ (RX+) (10/100)
6 2 B- (RX–) Receive– (10/100)
4 3 C+
5 4 C-
1 5 A+ (TX+) T (10/100)
2 6 A- (TX–) Transmit– (10/100)
7 7 D+
8 8 D-
— 9 AGND Ethernet Ground
— 10 AGND Ethernet Ground
9 7 5 3 1
AGND D+ A+ C+ B+
AGND D– A– C– B–
10 8 6 4 2