3. Radio Board Block Summary

3.1 Introduction

This section gives a short introduction to the blocks of the BRD4153A Radio Board.

3.2 Radio Board Block Diagram

The block diagram of the EFR32MG Radio Board is shown in the figure below.

Inverted-F

PCB

Antenna

2.4 GHz RF

UFL

Connector

LF

Crystal

32.768k

HF

Crystal

38.4M

Radio

Board

Connectors

8 Mbit

MX25R

Serial Flash

24AA0024

Serial EEPROM

Matching

Network &

Path

Selection

GPIO

UART

Debug

Packet Trace

AEM

I2C

SPI

2.4 GHz RF

EFR32

EFR32

Wireless SoC

Figure 3.1. BRD4153A Block Diagram

3.3 Radio Board Block Description

3.3.1 Wireless MCU

The BRD4153A EFR32 Mighty Gecko Radio Board incorporates an EFR32MG1P132F256GM48 Wireless System on Chip featuring

32-bit Cortex-M4 with FPU core, 256 kB of flash memory and 32 kB of RAM and a 2.4 GHz band transceiver with output power up to

16.5 dBm. For additional information on the EFR32MG1P132F256GM48, refer to the EFR32MG1 Data Sheet.

3.3.2 LF Crystal Oscillator (LFXO)

The BRD4153A Radio Board has a 32.768 kHz crystal mounted.

3.3.3 HF Crystal Oscillator (HFXO)

The BRD4153A Radio Board has a 38.4 MHz crystal mounted.

3.3.4 Matching Network for 2.4 GHz

The BRD4153A Radio Board incorporates a 2.4 GHz matching network which connects the 2.4 GHz TRX pin of the EFR32MG1 to the

one on-board printed Inverted-F antenna. The component values were optimized for the 2.4 GHz band RF performace and current con-

sumption with 13 dBm output power.

For detailed description of the matching network, see Chapter 4.2.1 Description of the 2.4 GHz RF Matching.

BRD4153A Reference Manual

Radio Board Block Summary

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