Seco SBC-C41-pITX User Manual page 36

3.3.10 Gigabit Ethernet connectors
Gigabit Ethernet Port #1
Pin Signal Pin
1 GBE1_MDI0+
2 GBE1_MDI0-
3 GBE1_MDI1+
4 GBE1_MDI2+
Optional Gigabit Ethernet Port #2
Pin Signal Pin
1 GBE2_MDI0+
2 GBE2_MDI0-
3 GBE2_MDI1+
4 GBE2_MDI2+
GBEx_MDI0+/GBEx_MDI0-: Ethernet Controller #x Media Dependent Interface (MDI) I/O differential pair #0. It is the first differential pair in Gigabit Ethernet mode, and
the Transmit differential pair in 10/100 Mbps modes.
GBEx_MDI1+/GBEx_MDI1-: Ethernet Controller #x Media Dependent Interface (MDI) I/O differential pair #1. It is the second differential pair in Gigabit Ethernet mode,
and the Receive differential pair in 10/100 Mbps modes.
GBEx_MDI2+/GBEx_MDI2-: Ethernet Controller #x Media Dependent Interface (MDI) I/O differential pair #2. It is the third differential pair in Gigabit Ethernet mode; it
is not used in 10/100Mbps modes.
GBEx_MDI3+/GBEx_MDI3-: Ethernet Controller #x Media Dependent Interface (MDI) I/O differential pair #3. It is the fourth differential pair in Gigabit Ethernet mode; it
is not used in 10/100Mbps modes
SBC-C41-pITX
SBC-C41-pITX User Manual - Rev. First Edition: 1.0 - Last Edition: 1.1 - Author: A.R./S.B. - Reviewed by M.B. Copyright © 2021 SECO S.p.A.
On board, there are two Gigabit Ethernet connector, for the direct
CN20
connection of the SBC-C41 to two different wired LANs.
Signal The Ethernet connection is realised by using two different Intel
Gigabit Ethernet controllers.
5 GBE1_MDI2-
First connection is available on connector CN20, and is always available, The second
6 GBE1_MDI1-
connection, available on RJ-45 connector CN23, instead, is available only as a factory option
7 GBE1_MDI3+
This interface is compatible both with Gigabit Ethernet (1000Mbps) and with Fast Ethernet
8 GBE1_MDI3-
(10/100Mbps) Networks. They will configure automatically to work with the existing network.
Please be aware that it will work in Gigabit mode only in case that it is connected to Gigabit
CN23
Ethernet switches/hubs/routers. For the connection, cables category Cat5e or better are
required. Cables category Cat6 are recommended for noise reduction and EMC compatibility
Signal
issues, especially when the length of the cable is significant.
5 GBE2_MDI2-
On the connectors there are also two bicolor (Green /Yellow) LEDs for each port. Left LED
6 GBE2_MDI1-
shows 10/100 or 1000 connection: green means 100Mbps connection, yellow means
1000Mpbs connection, when the LED is Off then 10Mpbs or no connection is available. The
7 GBE2_MDI3+
right LED blinks Green to show ACTIVITY presence.
8 GBE2_MDI3-
®
I21x family
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