Kontron KTGM45-mITX - Manual (Page 43)

KTGM45 Users Guide
KTD-N0793-O Page 43
3.10 Ethernet Connectors
The KTGM45 boards supports three channels of 10/100/1000Mb Ethernet, one (ETHER1) is based on Intel®
Boazman-LM WG82567LM Gigabit PHY with AMT 4.0 support and the two other controllers (ETHER2 &
ETHER3) are based on Intel® Hartwell 82574L PCI Express controller. (ETHER2/ETHER3 are not available
on KTGM45/mITX Basic).
In order to achieve the specified performance of the Ethernet port, Category 5 twisted pair cables must be
used with 10/100MB and Category 5E, 6 or 6E with 1Gb LAN networks.
The signals for the Ethernet ports are as follows:
Signal Description
MDI[0]+ / MDI[0]- In MDI mode, this is the first pair in 1000Base-T, i.e. the BI_DA+/- pair, and is the
transmit pair in 10Base-T and 100Base-TX.
In MDI crossover mode, this pair acts as the BI_DB+/- pair, and is the receive pair
in 10Base-T and 100Base-TX.
MDI[1]+ / MDI[1]- In MDI mode, this is the second pair in 1000Base-T, i.e. the BI_DB+/- pair, and is
the receive pair in 10Base-T and 100Base-TX.
In MDI crossover mode, this pair acts as the BI_DA+/- pair, and is the transmit
pair in 10Base-T and 100Base-TX.
MDI[2]+ / MDI[2]- In MDI mode, this is the third pair in 1000Base-T, i.e. the BI_DC+/- pair.
In MDI crossover mode, this pair acts as the BI_DD+/- pair.
MDI[3]+ / MDI[3]- In MDI mode, this is the fourth pair in 1000Base-T, i.e. the BI_DD+/- pair.
In MDI crossover mode, this pair acts as the BI_DC+/- pair.
Note: MDI = Media Dependent Interface.
3.10.1 Ethernet Connectors 1, 2 and 3 (ETHER1, ETHER2 and ETHER3)
Ethernet connector 1 is mounted together with USB Ports 0 and 2.
Ethernet connector 2 is mounted together with and above Ethernet connector 3.
The pinout of the RJ45 connectors is as follows:
Signal PIN Type Ioh/Iol Note
MDI0+
MDI0-
MDI1+
MDI2+
MDI2-
MDI1-
MDI3+
MDI3-
8 7 6 5 4 3 2 1
Connector Definitions