3.4.10 IADC U.FL Connector
The kit features a U.FL connector which is connected to the EFR32MG24 IADC through one of the dedicated ADC input pins (AIN0) in
a single-ended configuration. The dedicated ADC inputs facilitate optimal connections between external signals and the IADC.
A charge bucket filter has been placed at the ADC input, which helps improve sampling performance and measurement accuracy at
high sampling speeds, and provides some anti-aliasing for high-frequent signals. For information about the IADC performance and con-
figuration, refer to the EFR32MG24 data sheet.
EFR32MG24
AIN0
U.FL
Connector
Figure 3.14. U.FL Connector
3.5 On-board Debugger
The xG24 Dev Kit contains a microcontroller separate from the EFR32MG24 Wireless Gecko that provides the user with an on-board J-
Link debugger through the USB Micro-B port. This microcontroller is referred to as the "on-board debugger" and is not programmable
by the user. When the USB cable is removed, the on-board debugger goes into a very low power shutoff mode (EM4S).
In addition to providing code download and debug features, the on-board debugger also presents a virtual COM port for general pur-
pose application serial data transfer. The Packet Trace Interface (PTI) is also supported which offers invaluable debug information
about transmitted and received packets in wireless links.
The figure below shows the connections between the target EFR32MG24 device and the on-board debugger. The figure also shows the
Mini Simplicity Connector, and how this is connected to the same I/O pins.
for more details on debugging.
Mini Simplicity
Connector
EFR32MG
EFR32MG24
PA01 (GPIO.SWCLK)
PA02 (GPIO.SWDIO)
PA03 (GPIO.SWV)
PA05
PA06
DBG_VCOM_TX
DBG_VCOM_RX
DBG_SWCLK
DBG_SWDIO
DBG_SWO
On-Board
J-Link
Debugger
Host
PC
USB
DBG_PTI_DATA
PC06 (FRC.DOUT)
PC07 (FRC.DFRAME)
DBG_PTI_FRAME
DBG_RESET
RESETn
Figure 3.15. On-Board Debugger Connections
UG524: xG24 Dev Kit User's Guide
Hardware
silabs.com
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