Ethernet Connectors - Kontron KTQM67/mITX User Manual

KTD-N0819-K

5.2 Ethernet Connectors

The KTQM67 boards supports three channels of 10/100/1000Mb Ethernet, one (ETH1) is based on
Intel® Lewisville 82579LM Gigabit PHY with AMT 8.0 support and the two other controllers (ETHER2 &
ETHER3) are based on Intel® Hartwell 82574L PCI Express controller.
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.
Ethernet connector 1 (ETH1) is mounted together with USB Ports 4 and 5.
Ethernet connector 2 (ETH2) is mounted together with and above Ethernet connector 3 (ETH3).
The pinout of the RJ45 connectors is as follows:
Signal
MDI0+
MDI0-
MDI1+
MDI2+
MDI2-
MDI1-
MDI3+
MDI3-
Page 39
PIN
8 7 6 5 4 3 2
IO-Area Connectors
Type Ioh/Iol
1
KTQM67 Users Guide
Note