CCOMe-C79
CCOMe-C79 - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: A.R. - Reviewed by E.S. Copyright © 2021 SECO S.p.A.
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The signals of USB 3.0 ports #2 ÷ #3 are carried to another double type-A USB 3.1
stacked receptacle, type Winning p/n WDU3R-18F1B4PBUW3 or equivalent.
More specifically, USB 3.1 port #2 is carried to the lower USB receptacle of CN19, while
USB 3.1 port #3 is carried to the upper USB receptacle of CN19.
Since this connector is a standard type receptacle, it 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.
Signal description:
USB2+/USB2-: USB 2.0 Port #2 differential pair
US/USB_SSRX2-: USB Super Speed Port #2 receive differential pair
US/USB_SSTX2-: USB Super Speed Port #2 transmit differential pair
USB3+/USB3-: USB 2.0 Port #3 differential pair
US/USB_SSRX3-: USB Super Speed Port #3 receive differential pair
US/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
USB2
and +5V
USB3
are derived from +5V_ALW through a 1A current limited power switch.
USB 3.1 ports #2 / #3- CN19
Pin Signal
Pin Signal
1
+5V
USB2
10
+5V
USB3
2
USB2-
11
USB3-
3
USB2+
12
USB3+
4
GND
13
GND
5
USB_SSRX2-
14
USB_SSRX3-
6
US
15
US
7
GND
16
GND
8
USB_SSTX2-
17
USB_SSTX3-
9
US
18
US
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 ports, 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.
