BOLT
UDOO BOLT User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.B. - Reviewed by L.V. Copyright © 2019 SECO S.p.A.
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3.3.2
USB ports
The AMD Ryzen Embedded V1000 family of Processors used on UDOO BOLT board can manage up to five USB SuperSpeed (i.e., USB 3.1 compliant) ports and
six High Speed (i.e. USB 2.0 compliant) ports. There is only one dedicated High Speed port, the other five ports are shared with the SuperSpeed ports, i.e. they can
be used either by USB 2.0 or USB 3.0.
The USB 3.1 ports #1 and #2 are available on two single USB connectors, CN21 and CN22, placed on the same side of the PCB (
“
Frontal
”
), while USB 3.1 ports
#0 and #3 are available on USB connectors CN8 and CN9 placed on the opposite side (
“
Rear
”
).
“
Rear
”
and
“
Frontal
”
terms are used considering a possible application
of this board with an enclosure). The connectors used are standard USB 3.0 type-A receptacles.
USB 3.1 ports
’
connectors are standard type-A receptacle, they can be connected to all types of USB 1.1 / USB 2.0 / USB 3.0 devices using standard-A USB 3.x
or USB 2.0 plugs.
For USB 3.x 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:
/USB_P1-: USB 2.0 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.
/USB_P2-: USB 2.0 Port #2 differential pair.
US/USB_SSRX1-: USB Super Speed Port #1 receive differential pair.
US/USB_SSTX1-: USB Super Speed Port #1 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.
USB 3.1 port#1 type A receptacle CN21
Pin Signal
Pin Signal
1
+5V
USB1
5
USB_SSRX1-
2
USB_P1-
6
US
3
7
GND
4
GND
8
USB_SSTX1-
9
US
USB 3.1 port #2 type-A receptacle CN22
Pin Signal
Pin Signal
1
+5V
USB2
5
USB_SSRX2-
2
USB_P2-
6
US
3
7
GND
4
GND
8
USB_SSTX2-
9
US
