40-Pin Development Header - Digi XLR PRO User Manual

Getting started with the XLR PRO RF Module
Powering the XLR PRO module from the terminal blocks allows a varied input voltage level to reach
the device, since the Phoenix connector would only provide 5 V because of the regulator. It is
important to follow the supply voltage requirements above when powering from the terminal blocks.
All power supplied on the terminal blocks is used to power the XLR PRO module only. Components on
the XLR PRO Modular Development Board are not powered through the terminal blocks. Current
measurements can be taken if powering through the terminal. Shutdown currents include current
through D4 as well as the XLR module.
WARNING! Never exceed VDD_5V specifications.

40-Pin development header

CAUTION! When using the development header, note that GPIO and communication pins
are not 5 V tolerant. Ensure that voltages do not exceed electrical specifications.
Use the development header (P1) to communicate directly with the XLR PRO module. When using this
development header be sure to set all USB communication enable switches to the disabled state. This
means on SW5, you should disable ENABLE_UART_to_USB, ENABLE_SPI_to_USB, and ENABLE_GPIO_
to_USB. Also, when the XLR PRO module is in shutdown mode, ensure that no GPIO lines are being
driven high.
XLR PRO Radio Frequency (RF) Module User Guide
Development Board for the XLR PRO RF Module
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