User's Manual l MBa57xx UM 0100 l © 2020, TQ-Systems GmbH
Page 19
4.2
Communication interfaces
4.2.1
USB 3.0 Super-Speed Host
The TQMa57xx connects via USB3.0 to the USB3.0 hub on the MBa57xx and configures the hub via the I2C4 bus.
The TUSB8041I USB hub provides three USB 3.0 super-speed Host interfaces and one USB2.0 hub interface.
The hub has one upstream port and four downstream ports. The USB connectors are supplied with 5 V via power distribution
switches type TPS2561DRC. The switches have current monitoring and can switch off the bus voltage in case of overload and/or
overheating. Please refer to the data sheets of the switch for detailed information.
USB3.0 Host1&2 are connected to a dual USB Type A socket (X31). USB Host3 is available at USB type Micro B socket X32.
The fourth interface is connected to the USB2.0 hub USB4604I.
The USB Host port of the TQMa57xx offers a theoretical data rate of 5 Gbit/s. This is shared among the connected ports.
Depending on the hardware and software used, the achievable read and write rates of the ports can vary.
Illustration 9:
Block diagram USB 3.0 Hosts
