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3.3.4
USB connectors
CQ7-A42 carrier board offers the possibility of connecting multiple USB devices, exploiting the USB lanes that can come out from Qseven
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.
USB 3.0 type A receptacle - CN12
Pin
Signal
Pin
1
+5V_A
2
USB_P0-
3
USB_P0+
4
GND
Please be aware that USB 3.0 connectivity can be obtained only in case that it is supported by the Qseven
®
In case the Qseven
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 Qseven
USB 2.0 type A receptacle - CN11
Pin
Signal
Pin
1
+5V_A
2
USB_P2-
3
USB_P2+
4
GND
CQ7-A42
CQ7-A42 - Rev. First Edition: 1.0 - Last Edition: 2.0 - Author: S.B. - Reviewed by G.G. Copyright © 2016 SECO S.r.l.
USB 3.0 port is available on a single USB connector, CN12, which is placed
near the Gigabit Ethernet connectors.
Signal
The connector used is a type-A USB 3.0 receptacle.
5
USB_SSRX0-
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.
6
USB_SSRX0+
For USB 3.0 connections it is mandatory the use of SuperSpeed certified cables, whose
7
GND
SuperSpeed differential pairs are individually shielded inside the global cable's external
8
USB_SSTX0-
shielding.
9
USB_SSTX0+
®
module used doesn't offer such an interface.
Other two USB 2.0 ports, USB port #2 and USB port #3, coming out from Qseven
are carried out on a standard double Type-A receptacle.
Signal
Since this connector is a standard type receptacle, it can be connected to all
types of USB 1.1 / USB 2.0 devices using Standard-A USB 2.0 cables.
5
+5V_A
6
USB_P3-
7
USB_P3+
8
GND
®
module.
®
module plugged into the MXM connector.
®
module,
27
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