Table of Contents
Advertisement
3.3 Connectors description
3.3.1
Gigabit Ethernet connectors
GbEthernet RJ-45 Connector #1
Pin
Signal
Pin
1
GBE1_MDI0+
2
GBE1_MDI0-
3
GBE1_MDI1+
4
GBE1_MDI2+
Optional GbEthernet RJ-45 Connector #2
Pin
Signal
Pin
1
GBE2_MDI0+
2
GBE2_MDI0-
3
GBE2_MDI1+
4
GBE2_MDI2+
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.
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-C31
SBC-C31 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R. - Reviewed by D.T. - Copyright © 2021 SECO S.p.A.
On board, there are up to two Gigabit Ethernet connector, for the direct
CN31
connection of the SBC-C31 to two different wired LANs.
Signal
The first Ethernet connection is realised by Texas Instrument
DP83867CRRGZR 10Base-T/100Base-Tx/1000Base-Tx Ethernet PHY
5
GBE1_MDI2-
6
GBE1_MDI1-
The second Ethernet connection is realised by using Intel
7
GBE1_MDI3+
interfaced to Rock
8
GBE1_MDI3-
First connection is available on connector CN31, and it is always available.
The second connection, available on RJ-45 connector CN38, instead, is available only as a
CN38
factory option.
Signal
The connectors are type LINK-PP p/n LPJG16314A4NL or equivalent, with 2kV decoupling
capacitor, 100 Ohm impedance.
5
GBE2_MDI2-
These interfaces are compatible both with Gigabit Ethernet (1000Mbps) and with Fast Ethernet
6
GBE2_MDI1-
(10/100Mbps) Networks. They will configure automatically to work with the existing network.
7
GBE2_MDI3+
Please be aware that it will work in Gigabit mode only in case that it is connected to Gigabit
8
GBE2_MDI3-
Ethernet switches/hubs/routers. For the connection, cables category Cat5e or better are
®
I210 family Gigabit Ethernet controller
-e interface.
25
Advertisement
Table of Contents
