Silicon Laboratories BRD4305E Reference Manual
MGM13S12 Module Radio Board
BRD4305E Reference Manual
The BRD4305E Mighty Gecko Radio Board contains a Mighty Gecko MGM13S12 module which integrates Silicon Labs' EFR32MG13 Mighty 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 Zigbee, Thread, Blue-
tooth® Low Energy, and proprietary wireless networks operating in the 2.4 GHz band
with 18 dBm output power.
The BRD4305E Mighty Gecko Radio Board plugs into the Wireless Starter Kit Mainboard, which is included with the Mighty 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, mesh networking debug and packet trace, and visual energy profiling and
optimization.
This document contains a brief introduction and description of the BRD4305E Radio
Board features, focusing on the RF performance.
RADIO BOARD FEATURES
• Wireless Module: MGM13S12F512GA
•
CPU core: ARM Cortex®-M4 with FPU
• Flash memory: 512 kB
• RAM: 64 kB
• Operation frequency: 2.4 GHz
• Transmit power: 18 dBm
• Integrated chip antenna, RF matching
network, HF crystal, and decoupling
• Option for UFL connector
• Crystal for LFXO: 32.768 kHz
• 8 Mbit low-power serial flash for over-theair updates
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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 Measurements in the 2.4 GHz Band ................9
6.2 Radiated Power Measurements ........................10
6.2.1 Radiated Measurements in the 2.4 GHz Band .................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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BRD4305E Reference Manual
Introduction
1. Introduction
The BRD4305E Radio Boards provide a development platform (together with the Wireless Starter Kit Mainboard) for the Silicon Labs
Mighty Gecko MGM13S12 modules.
By carrying the MGM13S12 module, the BRD4305E Radio Board is designed to operate in the 2400-2483.5 MHz with the maximum of
18 dBm output power.
To develop and/or evaluate the MGM13S12 module, the BRD4305E 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 / PA3 / VCOM.#RTS_#CS
3v3
UIF_BUTTON1 / PF7 / P36
P200
Upper Row
NC / P38
NC / P40
NC / P42
NC / P44
DEBUG.TMS_SWDIO / PF1 / F0
DISP_ENABLE / PD15 / F14
UIF_BUTTON0 / PF6 / F12
UIF_LED0 / PF4 / F10
VCOM.#CTS_SCLK / PA2 / F8
DEBUG.RESET / RADIO_#RESET / F4
DEBUG.TDO_SWO / PF2 / F2
DISP_SI / PC6 / F16
VCOM.TX_MOSI / PA0 / F6
PTI.DATA / PB12 / F20
DISP_EXTCOMIN / PD13 / F18
USB_VBUS
5V
Board ID SCL
GND
Board ID SDA
USB_VREG
F7 / PA1 / VCOM.RX_MISO
F5 / PA5 / VCOM_ENABLE
F3 / PF3 / DEBUG.TDI
F1 / PF0 / DEBUG.TCK_SWCLK
P45 / NC
P43 / NC
P41 / NC
P39 / NC
P37 / PD9 / SENSOR_ENABLE
F11 / PF5 / UIF_LED1
F13 / PF7 / UIF_BUTTON1
F15 / PC8 / DISP_SCLK
F17 / PD14 / DISP_SCS
F19 / PB13 / PTI.SYNC
F21 / PB11 / PTI.CLK
GND
VMCU_IN
VCOM.#CTS_SCLK / PA2 / P0
P201
Lower Row
VCOM.#RTS_#CS / PA3 / P2
PD10 / P4
PD11 / P6
GND
VRF_IN
P35 / PD15 / DISP_ENABLE
P7 / PC9
P5 / PC8 / DISP_SCLK
P3 / PC7
P1 / PC6 / DISP_SI
P33 / PD14 / DISP_SCS
P31 / PD13 / DISP_EXTCOMIN
P29 / NC
P27 / 1V8*
P25 / NC
P23 / NC
P21 / NC
P19 / NC
P17 / NC
P15 / NC
P13 / PC11
P11 / PA1 / VCOM.RX_MISO
P9 / PA0 / VCOM.TX_MOSI
UIF_BUTTON0 / PF6 / P34
UIF_LED1 / PF5 / P32
UIF_LED0 / PF4 / P30
DEBUG.TDO_SWO / PF2 / P28
DEBUG.TMS_SWDIO / PF1 / P26
DEBUG.TCK_SWCLK / PF0 / P24
PTI.SYNC / PB13 / P22
PTI.DATA / PB12 / P20
PTI.CLK / PB11 / P18
VCOM_ENABLE / PA5 / P16
PA4 / P14
PC10 / P12
DEBUG.TDI / PF3 / P10
PD12 / P8
* Connection is available by mounting the corresponding 0 Ohm resistor.
(See the schematic of the Radio Board for details.)
BRD4305E Reference Manual
Radio Board Connector
2. Radio Board Connector
2.1 Introduction
The board-to-board connector scheme allows access to all MGM13S12 GPIO pins as well as the RESETn signal. For more information
on the functions of the available pins, see the MGM13S12 data sheet.
2.2 Radio Board Connector Pin Associations
The figure below shows the mapping between the connector and the MGM13S12 pins and their function on the Wireless Starter Kit
Mainboard.
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Figure 2.1. BRD4305E Radio Board Connector Pin Mapping
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
EFR32
SiP Module
Chip
Antenna
RF In/Out
2.4 GHz RF
LF
Crystal
32.768k
3.1 Introduction
This section gives a short introduction to the blocks of the BRD4305E Radio Board.
3.2 Radio Board Block Diagram
The block diagram of the BRD4305E Radio Board is shown in the figure below.
BRD4305E Reference Manual
Radio Board Block Summary
Figure 3.1. BRD4305E Block Diagram
3.3 Radio Board Block Description
3.3.1 Wireless SiP
The BRD4305E Mighty Gecko Radio Board incorporates an MGM13S12F512GA Mighty Gecko MGM13S12 module featuring 32-bit
Cortex®-M4 with FPU core, 512 kB of flash memory, 64 kB of RAM and a 2.4 GHz band transceiver with output power up to 18 dBm.
For additional information on the MGM13S12F512GA, refer to the MGM13S data sheet.
3.3.2 LF Crystal Oscillator (LFXO)
The BRD4305E Radio Board has a 32.768 kHz crystal mounted. For details regarding the crystal configuration, refer to Application
Note "AN0016.1: Oscillator Design Considerations".
3.3.3 UFL Connector
To be able to perform conducted measurements, Silicon Labs added a UFL connector 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 output of the matching network is connected to the printed inverted-F antenna by a series component. It can be
connected to the UFL connector as well through a series 0 Ohm resistor, which is not mounted by default. For conducted measurements through the UFL connector, the series component to the antenna should be removed and the 0 Ohm resistor should be mounted
(see section for further details).
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