3.2.6.3 UART Interface Distribution

A UART interface is split between the RPi compatible header and the M.2 interface. The M.2 interface is prioritized, because it is used for the DFU (Device Firmware Update) of the compatible Microchip devices.

In order to use the UART interface on the RPi compatible header, the user must solder resistors R40 and R46 on the board. In this case, if a device is connected to the M.2 interface, the user must also unsolder resistors R38 and R43.

A diagram of electrical wiring Description automatically generated — Figure 3-19. UART Interface Distribution

The online versions of the documents are provided as a courtesy. Verify all content and data in the device’s PDF documentation found on the device product page.