TQ-Systems MBa8MPxL, Руководство пользователя

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User's Manual l MBa8MPxL UM 0100 l © 2022, TQ-Systems GmbH Page 15
3.3.3 USB 3.0 Hub
A USB 3.0 hub TUSB8041 is connected to the USB2 interface on the TQMa8MPxL, which provides four USB 3.0 / 2.0 host
interfaces.
USB Host 1 & 2 of the TUSB8041 are connected to a Dual USB 3.0 Type A socket (X36) on the MBa8MPxL. USB Host 3 is routed to
the PCIe M.2 connector X48, USB Host 4 is routed to the LVDS-CMD connector X7 on the MBa8MPxL.
The USB hub is programmed via bootstrapping or I
2
C. Further information can be found in the TUSB8041 data sheet and the
MBa8MPxL schematics.
The USB connectors are supplied with 5 V via power switches. The current is monitored and can be switched off in case of an
overload and/or overheating.
The USB 3.0 port of the TQMa8MPxL provides a theoretical data rate of 5 Gbit/s. This is divided among the connected ports on
the MBa8MPxL. Depending on the software and hardware used, the effective read and write rates of the ports may vary.
TUSB8041 TQMa8MPxL
LVDS CMD
USB USB
Host 4
PCIe M.2 Host 3
Host 1
Host 2
USB 3.0
USB Stacked
Type A
USB 2.0
USB 2.0
USB 3.0
USB 3.0
I2C I2C1
RESET# GPIO1_IO11
USB_VBUS
V_5V_SW
OPT
Figure 11: Block diagram USB 3.0 Hub
3.3.4 USB 3.0 OTG
The second TQMa8MPxL USB interface is configured as USB 3.0 OTG and routed to USB Micro-B connector X29 on the MBa8MPxL.
This interface can be used for the Serial Download Mode of the TQMa8MPxL. It can be used as a normal USB 3.0 or USB 2.0
interface via an adapter.
The USB connector is supplied with 5 V via a power switch. The current is monitored and can be switched off in case of an
overload and/or overheating.
The USB1 port of the TQMa8MPxL provides a theoretical data rate of 5 Gbit/s. Depending on the software and hardware used,
the effective read and write rates of the ports may vary.
TQMa8MPxL
USB 3.0 OTG
USB USB 3.0
ESD
USB 3.0
Switch
FPF2164
V_5V_SW
VBUS
ESD
VBUS
USB_VBUS
Figure 12: Block diagram USB 3.0 OTG