Silicon Labs BRD4311A, BGM220PC22 Reference Manual

BGM220PC22 Module Radio Board
BRD4311A Reference Manual

The BRD4311A Wireless Gecko Radio Board contains a Wireless Gecko module, which
integrates Silicon Labs' EFR32BG22 Wireless Gecko SoC into a small form factor mod­ule. The fully certified module contains all components (a high-performance transceiver,
an energy efficient 32-bit MCU, crystals, RF passives, and antenna) required for a sys-

tem-level implementation of Bluetooth® Low Energy wireless networks operating in the

2.4 GHz band with 8 dBm output power.

The BRD4311A Wireless Gecko Radio Board plugs into the Wireless Starter Kit Main­board, which is included with the Wireless Gecko Starter Kit and gives access to dis­play, buttons, and additional features from expansion boards. With the supporting Sim­plicity Studio suite of tools, developers can take advantage of graphical wireless appli­cation development, BGScript for Python-like scripting, and visual energy profiling and
optimization.

This document contains a brief introduction and description of the BRD4311A Radio
Board features, focusing on the RF performance.

RADIO BOARD FEATURES

• Wireless Module: BGM220PC22HNA2

•

• Flash memory: 512 kB

• RAM: 32 kB

• Operation frequency: 2.4 GHz

• Transmit power: 8 dBm

• Integrated chip antenna, RF matching

• 8 Mbit low-power serial flash for over-the­air updates

CPU core: ARM Cortex®-M33

network, crystals, and decoupling

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Table of Contents

1. Introduction ................................3

2. Radio Board Connector ...........................4

2.1 Introduction ...............................4

2.2 Radio Board Connector Pin Associations .....................4

3. Radio Board Block Summary .........................5

3.1 Introduction ...............................5

3.2 Radio Board Block Diagram .........................5

3.3 Radio Board Block Description ........................5

3.3.1 Wireless Module ............................5

3.3.2 Radio Board Connectors .........................5

3.3.3 Serial Flash .............................6

3.3.4 Serial EEPROM ............................6

4. Mechanical Details .............................7

5. EMC Compliance ..............................8

5.1 Introduction ...............................8

5.2 EMC Regulations for 2.4 GHz .........................8

5.2.1 ETSI EN 300-328 Emission Limits for the 2400-2483.5 MHz Band ...........8

5.2.2 FCC15.247 Emission Limits for the 2400-2483.5 MHz Band .............8

5.2.3 Applied Emission Limits for the 2.4 GHz Band ..................8

6. RF Performance ..............................9

6.1 Radiated Power Measurements ........................9

6.1.1 Radiated Measurements in the 2.4 GHz Band ..................9

6.1.2 Antenna Pattern Measurements.......................10

7. EMC Compliance Recommendations ......................11

7.1 Recommendations for 2.4 GHz ETSI EN 300-328 Compliance ..............11

7.2 Recommendations for 2.4 GHz FCC 15.247 Compliance ................11

8. Board Revision History .......................... 12

9. Errata ................................. 13

10. Document Revision History ........................ 14

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BRD4311A Reference Manual

Introduction

1. Introduction

The BRD4311A Radio Boards provide a development platform (together with the Wireless Starter Kit Mainboard) for the Silicon Labs
Wireless Gecko modules.

By carrying the BGM220PC22 module, the BRD4311A Radio Board is designed to operate in the 2400-2483.5 MHz with the maximum
of 8 dBm output power.

To develop and/or evaluate the BGM220PC22 module, the BRD4311A Radio Board can be connected to the Wireless Starter Kit Main­board to get access to display, buttons, and additional features from expansion boards (EXP boards).

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GND

F9 / PA07 / VCOM_RTS

3v3

NC / P36

P200

Upper Row

NC / P38
NC / P40

DBG_TDO_SWO / PA03 / P42

NC / P44

DBG_TMS_SWDIO / PA02 / F0

DISP_ENABLE / PD03 / F14

UIF_BUTTON0 / UIF_LED0 / PB00 / F12

UIF_BUTTON0 / UIF_LED0 / PB00 / F10

VCOM_CTS / PA08 / F8

DBG_RESET / #RESET / F4

DBG_TDO_SWO / PA03 / F2

DISP_MOSI / PC00 / F16

VCOM_TX / PA05 / F6

PTI_DATA / PC04 / F20

DISP_EXTCOMIN / PA00 / F18

USB_VBUS

5V

Board ID SCL

GND

Board ID SDA

USB_VREG

F7 / PA06 / VCOM_RX

F5 / PB04 / VCOM_ENABLE

F3 / PA04* / DBG_TDI*

F1 / PA01 / DBG_TCK_SWCLK

P45 / NC

P43 / NC

P41 / PA04* / DBG_TDI*

P39 / NC

P37 / PD02 / SENSOR_ENABLE

F11 / PB01 / UIF_BUTTON1 / UIF_LED1
F13 / PB01 / UIF_BUTTON1 / UIF_LED1
F15 / PC02 / DISP_SCLK
F17 / PC06 / DISP_SCS
F19 / PC05 / PTI_SYNC
F21 / NC

GND

VMCU_IN

PC01** / P0

P201

Lower Row

PC03*** / P2
UIF_BUTTON0 / UIF_LED0 / PB00 / P4
UIF_BUTTON1 / UIF_LED1 / PB01 / P6

GND

VRF_IN

P35 / PD03 / DISP_ENABLE

P7 / PC03***

P5 / PC02 / DISP_SCLK

P3 / PC01**

P1 / PC00 / DISP_MOSI

P33 / NC

P31 / PC07

P29 / PC06 / DISP_SCS

P27 / PC05 / PTI_SYNC

P25 / PC04 / PTI_DATA

P23 / NC

P21 / PA08 / VCOM_CTS

P19 / PA07 / VCOM_RTS

P17 / NC

P15 / PB04 / VCOM_ENABLE

P13 / PB03

P11 / PA06 / VCOM_RX

P9 / PA05 / VCOM_TX

NC / P34

NC / P32

NC / P30

NC / P28

NC / P26

NC / P24

DBG_TDI* / PA04 / P22

DBG_TDO_SWO / PA03 / P20

DBG_TMS_SWDIO / PA02 / P18

DBG_TCK_SWCLK / PA01 / P16

DISP_EXTCOMIN / PA00 / P14

PB02 / P12

NC / P10

NC / P8

* Optional 0R resistor should be mounted to enable this connection. (Mutually exclusive with FLASH_SCS.)

** Mutually exclusive connection. Default: PC01 to P3.

*** Mutually exclusive connection. Default: PC03 to P7.

BRD4311A Reference Manual

Radio Board Connector

2. Radio Board Connector

2.1 Introduction

The board-to-board connector scheme allows access to all BGM220PC22 GPIO pins as well as the RESETn signal. For more informa­tion on the functions of the available pins, see the BGM220PC22 data sheet.

2.2 Radio Board Connector Pin Associations

The figure below shows the mapping between the connector and the BGM220PC22 pins and their function on the Wireless Starter Kit
Mainboard.

Figure 2.1. BRD4311A Radio Board Connector Pin Mapping

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3. Radio Board Block Summary

Radio
Board

Connectors

8 Mbit

MX25R

Serial Flash

I2C

24AA0024

Serial EEPROM

GPIO

UART

Debug

Packet Trace

AEM

I2C

SPI

SPI

EFR32

xGM220P

Module

Chip

Antenna

3.1 Introduction

This section introduces the blocks of the BRD4311A Radio Board.

3.2 Radio Board Block Diagram

The block diagram of the BRD4311A Radio Board is shown in the figure below.

BRD4311A Reference Manual

Radio Board Block Summary

Figure 3.1. BRD4311A Block Diagram

3.3 Radio Board Block Description

3.3.1 Wireless Module

The BGM220PC22HNA2 module incorporated on the BRD4311A Wireless Gecko Radio Board features a 32-bit Cortex®-M33 core,
512 kB of flash memory, 32 kB of RAM, crystals, and a 2.4 GHz band transceiver with RF passives and integrated antenna output pow­er up to 8 dBm. For additional information on the BGM220PC22HNA2, refer to the BGM220P data sheet.

3.3.2 Radio Board Connectors

Two dual-row, 0.05” pitch polarized connectors make up the BRD4311A Radio Board interface to the Wireless Starter Kit Mainboard.

For more information on the pin mapping between the BGM220PC22HNA2 and the Radio Board Connector, refer to section 2.2 Radio

Board Connector Pin Associations.

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