VISION
UDOO VISION User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R. - Reviewed by M.B. Copyright © 2021 SECO S.p.A
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3.3
Connectors description
3.3.1
Ethernet connectors
On board, there are two Gigabit Ethernet connector, for the direct
connection of the UDOO VISION board to two different wired LANs.
The Ethernet connection is realised by using two different Intel
®
I21x
family Gigabit Ethernet controllers.
These two interfaces are available through RJ45 connectors CN20
and CN23.
This interface is compatible both with Gigabit Ethernet (1000Mbps) and with Fast Ethernet
(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
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
issues, especially when the length of the cable is significant.
On the connectors there are also two bicolor (Green /Yellow) LEDs for each port. Left LED
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 right LED blinks Green to show ACTIVITY presence.
GB/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.
GB/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.
GB/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.
GB/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
GbE #1 RJ-45 Connector CN20
Pin Signal
Pin Signal
1
GB
5
GBE1_MDI2-
2
GBE1_MDI0-
6
GBE1_MDI1-
3
GB
7
GB
4
GB
8
GBE1_MDI3-
GbE #2 RJ-45 Connector CN23
Pin Signal
Pin Signal
1
GB
5
GBE2_MDI2-
2
GBE2_MDI0-
6
GBE2_MDI1-
3
GB
7
GB
4
GB
8
GBE2_MDI3-
