Kontron KTH81-mITX - Manual (Page 34)

KTD-N0882-H Page 34 IO-Area Connectors
KTQ87/KTH81 Users Guide
6.2 Ethernet Connectors
The KTQ87/KTH81 supports two channels of 10/100/1000Mb Ethernet. First Ethernet connector (LAN1) is
based on Intel® Clarkville i218LM/i218-V Gigabit PHY. The i218-LM (Q87) has AMT 9.0 support and the
i218-V (H81) has no AMT support. Second Ethernet connector (LAN2) is based on Intel® Pearsonville
i218AT 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 LAN1 is mounted together with USB Ports 2 and 3.
Ethernet LAN2 is mounted together with USB Ports 0 and 1.
The pinout of the RJ45 connectors is as follows:
Signal PIN Type Ioh/Iol Note
MDI0+
MDI0-
MDI1+
MDI2+
MDI2-
MDI1-
MDI3+
MDI3-
Flashing =>
communication
On => 1GB link
8 7 6 5 4 3 2 1