User Manual
Table Of Contents
- 1 MG21USB Dongle Guide
- 1.1 Board Description
- 1.2 USB Dongle EFR32MG21 I/O Mapping
- 1.3 USB Dongle and Host Interface
- 1.4 USB Dongle Application FW Upgrade over USB through X-Modem Bootloader
- 1.5 MG21 Bootloader mode and Reset control
- 1.6 LED Indicators
- 1.7 PTA Debug Interface
- 1.8 Using the Mini-Simplicity interface on USB Dongle
- 1.9 MG21 USB Dongle v2 Components Placement
- 1.10 MG21 USB Dongle Test Points
- 2 MG21 USB Dongle firmware flashing, debugging and PTI Network Traffic Capture
- 3 MG21USB Dongle Certifications
- 4 Document Revision History
MG21USB Dongle Guide
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1.10 MG21 USB Dongle Test Points
Below tables show the PTA test points (T9-T14) and other test points, e.g. SWD interface factory used and reserved GPIO:
Test Point
Signal
Description
T1
PA00
Free IO
T2
PC03
Free IO
T3
PD04
Free IO
T4
GND
Ground
T5
RESETn
Reset to EFR32 (active-low)
T6
SWDIO
SEGGER J-LINK SWD data
T7
SWDCLK
SEGGER J-LINK SWD clock
T8
+3V3
3.3V power supply
T9/REQ
PC00
PTA REQUEST
T10/PRI
PB00
PTA PRIORITY
T11/GNT
PB01
PTA GRANT
T12/TXA
PD02
FEM TX Active debug signal
T13/RXA
PD03
FEM RX Active debug signal
T14/GND
GND
Ground
Table 1.2. USB Dongle Test Points