Table of Contents
Advertisement
Two further red LEDs, D7 and D8, are placed near the connectors, to signal the connection to the Ethernet (respectively, GbE0 and GbE1).
Gigabit Ethernet Port #1 + USB ports #2 / #3- CN13
Pin
Signal
Pin
E-1
GBE1_MDI0+
E-5
E-2
GBE1_MDI0-
E-6
E-3
GBE1_MDI1+
E-7
E-4
GBE1_MDI2+
E-8
U-1
+5V_A
U-10 +5V_A
U-2
USB2-
U-11 USB3-
U-3
USB2+
U-12 USB3+
U-4
GND
U-13 GND
U-5
USB_SSRX2-
U-14 USB_SSRX3-
U-6
USB_SSRX2+
U-15 USB_SSRX3+
U-7
GND
U-16 GND
U-8
USB_SSTX2-
U-17 USB_SSTX3-
U-9
USB_SSTX2+
U-18 USB_SSTX3+
Since these connectors are standard type receptacles, they can be connected to all types of USB 1.1 / USB 2.0 / USB 3.0 devices using Standard-A USB 3.0 or
USB 2.0 plugs.
For USB 3.0 connections it is mandatory the use of SuperSpeed certified cables, whose SuperSpeed differential pairs are individually shielded inside the global
cable's external shielding.
Please be aware that USB 3.0 connectivity can be obtained only in case that it is supported by the COM Express module plugged onto the Carrier
Board.
In case the COM Express module used doesn't offer USB 3.0 ports, it will be always possible to use USB 2.0 port #0, simply by plugging an USB
2.0 cable.
Avoid using USB 3.0 cables if the COM Express module used doesn't offer such an interface.
CCOMe-965
CCOMe-965 - Rev. First Edition: 1.0 - Last Edition: 3.0 - Author: S.B. - Reviewed by G.G. Copyright © 2016 SECO S.r.l.
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.
Signal
GBEx_MDI1+/GBEx_MDI1-: Ethernet Controller #x Media Dependent Interface (MDI) I/O
GBE1_MDI2-
differential pair #1. It is the second differential pair in Gigabit Ethernet mode, and the Receive
GBE1_MDI1-
differential pair in 10/100 Mbps modes.
GBE1_MDI3+
GBEx_MDI2+/GBEx_MDI2-: Ethernet Controller #x Media Dependent Interface (MDI) I/O
GBE1_MDI3-
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.
USB_SSTXx+ / USB_SSTXx+: USB Superspeed port #x transmitting output differential pair
USB_SSRXx+ / USB_SSRXx+: USB Superspeed port #x receiving input differential pair
USBx+ / USBx-: USB 2.0 Port #x 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.
37
Advertisement
Table of Contents
