User Manual

SGD-SB2025NT-TUM, Part 1
Jan 12 Page 30 GENERAL DESCRIPTION
4.3.8 SBC Support PCB
This PCB includes a 5-port Ethernet switch, two USB sockets, physical support for the Pico Power
Supply Unit (PSU), USB Universal Asynchronous Receiver/Transmitter (UART) and RS232
interfaces for the ITX.
4.3.9 Aux PCB
This PCB contains a micro controller that monitors the operation of the ITX and will attempt to
reboot it if necessary. Also included are LEDs and drivers, DC distribution for other PCBs,
Environment I/O, GPS interface and a 4-port USB UART for connection to the PC Engineering
Terminal Application.
4.3.10 Pico PSU
The Pico PSU takes the 12 V DC supply and provides all the voltage rails needed by the ITX and
supporting PCBs.