SBC-C43
SBC-C43 User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R. - Reviewed by S.R. -Copyright © 2020 SECO S.p.A.
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Instead on connector CN53, type TRXCOM p/n TRJU3636B81NL, with 2kV decoupling capacitors, it is available GbE LAN port #0 along with
USB 3.0 port #3, directly managed by the i.MX8 processor.
Signals description:
/USB_H1-: USB 2.0 Host Port #1 differential pair;
US/USB_SSRX1-: USB Super Speed Port #1 receive differential pair;
US/USB_SSTX1-: USB Super Speed Port #1 transmit differential pair;
+5VUSB voltage is derived from +5V_ALW power rail using a 1A power switch.
Common mode chokes are placed on all USB differential pairs for EMI compliance. For ESD
protection, on all data and voltage lines are placed clamping diodes for voltage transient
suppression.
ET/ETH1_MDI0-: Ethernet Controller 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.
ET/ ETH1_MDI1-: Ethernet Controller 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.
ET/ ETH1_MDI2-: Ethernet Controller 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.
ET/ ETH1_MDI3-: Ethernet Controller 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.
On the connector there are also two LEDs for each port. Left LED is bicolor (Orange / Green) and
shows 10/100 or 1000 connection: orange means 100Mbps connection, green means
1000Mpbs connection, when the LED is Off then 10Mpbs or no connection is available. The right
LED is Yellow and shows ACTIVITY presence.
This interface is compatible both with Gigabit Ethernet (1000Mbps) and with Fast Ethernet
(10/100Mbps) Networks. It will configure automatically to work with the existing network.
Please be aware that they will work in Gigabit mode only in case that they are 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.
Combo GbE #0 + USB 3.0 connector CN53
Pin Signal
U1
+5V
USB
U2
USB_H1-
U3
U4
GND
U5
USB_SSRX1-
U6
US
U7
GND
U8
USB_SSTX1-
U9
US
E1
ET
E2
ETH0_MDI0-
E3
ET
E4
ET
E5
ETH0_MDI2-
E6
ETH0_MDI1-
E7
ET
E8
ETH0_MDI3-
