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Combo USB 3.1 ports #2 #3 Dual Type-A
socket + RJ45 - CN19
Pin
Signal
Pin
U1
+5V
U10
USB2
U2
USB_2-
U11
U3
USB_2+
U12
U4
GND
U13
U5
USB_SSRX2-
U14
U6
USB_SSRX2+
U15
U7
GND
U16
U8
USB_SSTX2-
U17
U9
USB_SSTX2+
U18
E1
GBE0_MDI0+
E5
E2
GBE0_MDI0-
E6
E3
GBE0_MDI1+
E7
E4
GBE0_MDI2+
E8
Signal description:
USB_2+/USB_2-: USB 2.0 Port #2 differential pair
USB_SSRX2+/USB_SSRX2-: USB Super Speed Port #2 receive differential pair
USB_SSTX2+/USB_SSTX2-: USB Super Speed Port #2 transmit differential pair
USB_3+/USB_3-: USB 2.0 Port #3 differential pair
USB_SSRX3+/USB_SSRX3-: USB Super Speed Port #3 receive differential pair
USB_SSTX3+/USB_SSTX3-: USB Super Speed Port #3 transmit differential pair
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.
+5V
and +5V
are derived from +5V_ALW through a 1A current limited power switch.
USB2
USB3
CCOMe-C96
CCOMe-C96 - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R. - Reviewed by C.M. Copyright © 2021 SECO S.p.A.
The signals of USB 3.0 ports #2 ÷ #3 ports are carried to a Combo Connector
CN19, type LOTES p/n AJKM0030 or equivalent, composed by a double type
A USB 3.1 receptacle socket and one Gigabit Ethernet RJ-45 connector,
directly managed by the COM Express module.
Signal
On this connector there are also two bicolour Green/Yellow LEDs: LED1 (Left
+5V
USB3
LED) shows 10/100 or 1000 connection: green means 100Mbps connection,
USB_3-
yellow means 1000Mpbs connection, when the LED is Off then 10Mpbs or no
connection is available. LED2 (Right LED) shows ACTIVITY presence.
USB_3+
This interface is compatible both with Gigabit Ethernet (1000Mbps) and with
GND
Fast Ethernet (10/100Mbps) Networks. It will configure automatically to work with
USB_SSRX3-
the existing network.
USB_SSRX3+
Please be aware that it will work in Gigabit mode only in case that it is connected to Gigabit Ethernet
GND
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
USB_SSTX3-
the cable is significant.
USB_SSTX3+
GBE0_MDI2-
GBE0_MDI1-
GBE0_MDI3+
GBE0_MDI3-
47
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