BGM220SC12 Module Radio Board
BRD4310A Reference Manual
The BRD4310A Wireless Gecko Radio Board contains a Wireless Gecko module which
integrates Silicon Labs' EFR32BG22 Wireless Gecko SoC into a small form factor System-in-Package (SiP) module. The fully certified module contains all components (a
high-performance transceiver, an energy efficient 32-bit MCU, HF crystal, RF passives,
and antenna) required for a system-level implementation of Bluetooth® Low Energy
wireless networks operating in the 2.4 GHz band with 0 dBm output power.
The BRD4310A 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 BRD4310A Radio
Board features, focusing on the RF performance.
RADIO BOARD FEATURES
• Wireless Module: BGM220SC12WGA2
•
• Flash memory: 352 kB
• RAM: 32 kB
• Operation frequency: 2.4 GHz
• Transmit power: 0 dBm
• Integrated chip antenna, RF matching
• Option for UFL connector
• Crystal for LFXO: 32.768 kHz
• 8 Mbit low-power serial flash for over-theair updates
CPU core: ARM Cortex®-M33
network, HF crystal, 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 SiP .............................5
3.3.2 LF Crystal Oscillator (LFXO) ........................5
3.3.3 UFL Connector ............................5
3.3.4 Radio Board Connectors .........................6
3.3.5 Serial Flash .............................6
3.3.6 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 Conducted Power Measurements .......................9
6.1.1 Conducted Power Measurements with Unmodulated Carrier .............9
6.2 Radiated Power Measurements ........................10
6.2.1 Radiated Measurements in the 2.4 GHz Band ..................10
6.2.2 Antenna Pattern Measurements.......................10
7. EMC Compliance Recommendations ..................... 12
7.1 Recommendations for 2.4 GHz ETSI EN 300-328 Compliance ..............12
7.2 Recommendations for 2.4 GHz FCC 15.247 Compliance ................12
8. Board Revision History .......................... 13
9. Errata ................................. 14
10. Document Revision History ........................ 15
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BRD4310A Reference Manual
Introduction
1. Introduction
The BRD4310A Radio Boards provide a development platform (together with the Wireless Starter Kit Mainboard) for the Silicon Labs
Wireless Gecko modules.
By carrying the BGM220SC12 module, the BRD4310A Radio Board is designed to operate in the 2400-2483.5 MHz with the maximum
of 0 dBm output power.
To develop and/or evaluate the BGM220SC12 module, the BRD4310A 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 / NC
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.
BRD4310A Reference Manual
Radio Board Connector
2. Radio Board Connector
2.1 Introduction
The board-to-board connector scheme allows access to all BGM220SC12 GPIO pins as well as the RESETn signal. For more information on the functions of the available pins, see the BGM220SC12 data sheet.
2.2 Radio Board Connector Pin Associations
The figure below shows the mapping between the connector and the BGM220SC12 pins and their function on the Wireless Starter Kit
Mainboard.
Figure 2.1. BRD4310A Radio Board Connector Pin Mapping
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3. Radio Board Block Summary
2.4 GHz RF
UFL
Connector
Radio
Board
Connectors
8 Mbit
MX25R
Serial Flash
I2C
24AA0024
Serial EEPROM
Path
Selection
GPIO
UART
Debug
Packet Trace
AEM
I2C
SPI
SPI
2.4 GHz RF
EFR32
xGM220S
Module
Chip
Antenna
RF In/Out
2.4 GHz RF
LF
Crystal
32.768k
3.1 Introduction
This section introduces the blocks of the BRD4310A Radio Board.
3.2 Radio Board Block Diagram
The block diagram of the BRD4310A Radio Board is shown in the figure below.
BRD4310A Reference Manual
Radio Board Block Summary
Figure 3.1. BRD4310A Block Diagram
3.3 Radio Board Block Description
3.3.1 Wireless SiP
The BRD4310A Wireless Gecko Radio Board incorporates an BGM220SC12WGA2 Wireless Gecko module featuring 32-bit Cortex®M33 core, 352 kB of flash memory, 32 kB of RAM and a 2.4 GHz band transceiver with output power up to 0 dBm. For additional information on the BGM220SC12WGA2, refer to the BGM220S data sheet.
3.3.2 LF Crystal Oscillator (LFXO)
The BRD4310A Radio Board has a 32.768 kHz crystal mounted. For details regarding the crystal configuration, refer to application note
AN0016.2: Oscillator Design Considerations.
3.3.3 UFL Connector
To perform conducted measurements, a UFL connector is added to the Radio Board. The connector allows an external 50 Ohm cable
or antenna to be connected during design verification or testing.
Note: By default, the 2.4 GHz RF input/output of the module is connected to the antenna input pin of the module by a series 0 Ohm
resistor. Connecting the RF input/output to the UFL connector supports conducted measurements, or the connection of an external antenna. Move the series 0 Ohm resistor to the antenna to the position of the series resistor to the UFL connector (see the schematic of
the BRD4310A Radio Board for further details). On the layout, the footprints of these two resistors have overlapping pads to prevent
simultaneous connection of the antenna and the UFL connector.
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