Hardware; Block Diagram - Silicon Laboratories UG464 User Manual

3. Hardware

The core of the Thunderboard EFR32BG22 is the EFR32BG22 Wireless Gecko System-on-Chip. The board also contains several pe-
ripherals connected to the EFR32BG22. For placement and layout of the hardware components the reader is referred to section
Hardware Layout.

3.1 Block Diagram

An overview of the Thunderboard EFR32BG22 is illustrated in the figure below.
USB Micro-B
Connector
Radio
2.4 GHz
Antenna
Memory
8 Mbit
MX25R
Serial Flash
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Device Connectivity & Debugging
J-Link
Debugger
Mini-Simplicity
Connector
EFR32BG22
Wireless SoC
Sensors
Si7021 VEML6035
Temperature Ambient
& Humidity Light
Sensor Sensor
SPK0641HT4H-1 ICM-20648
2x PDM
Microphones
Figure 3.1. Kit Block Diagram
UG464: Thunderboard™ EFR32BG22 User's Guide
Breakout Pads
(EXP-Header pinout)
Si7210
Hall Effect
Sensor
6-axis Inertial
Sensor
Hardware
1.4 Kit
Button and LED
User Button
& LED
Rev. 1.0 | 9