UG230: EFR32MG1P732 2.4 GHz 19.5 dBm
Radio Board
The SLWRB4154A Radio Board for the Wireless Starter Kit Main-
board is an excellent starting point to get familiar with the
EFR32™ Mighty Gecko Wireless System-on-Chip.
The Wireless Starter Kit Mainboard contains sensors and peripherals demonstrating
some of the Mighty Gecko's many capabilities. These together provide all necessary
tools for developing a Silicon Labs wireless application.
The WSTK Mainboard is included with all Silicon Labs Wireless Starter Kits. It is not in-
cluded when purchasing a single radio board.
RADIO BOARD FEATURES
• EFR32 Mighty Gecko Wireless SoC with
256 kB Flash, 32 kB RAM and 512 kB of
co-packaged serial flash for over the air
updates. (EFR32MG1P732F256GM32)
• Inverted-F PCB antenna (2.4 GHz band)
WSTK MAINBOARD FEATURES
• Ethernet and USB connectivity
• Advanced Energy Monitor
• Packet Trace Interface support
• SEGGER J-Link on-board debugger
• Debug Multiplexer supporting external
hardware as well as radio board
• Silicon Labs' Si7021 Relative Humidity and
Temperature sensor
• Ultra low power 128x128 pixel Memory
LCD
• User LEDs / Pushbuttons
• 20-pin 2.54 mm header for expansion
boards
• Breakout pads for direct access to all radio
I/O pins
• Power sources includes USB, CR2032
coin cell and AA batteries.
SOFTWARE SUPPORT
• Simplicity Studio™
• Energy Profiler
• Network Analyzer
silabs.com
| Smart. Connected. Energy-friendly.
Rev. 1.00
UG230: EFR32MG1P732 2.4 GHz 19.5 dBm Radio Board
Introduction
1. Introduction
The SLWRB4154A Radio Board is a single EFR32MG1P732 2.4 GHz 19.5 dBm radio board for the Wireless Starter Kit Mainboard.
A radio board and a mainboard used together makes a complete development platform for Silicon Labs EFR32 Mighty Gecko Wireless
System-on-Chips.
The Wireless Starter Kit Mainboard features an on-board J-Link debugger, an Advanced Energy Monitor for real-time current and volt-
age monitoring, a virtual COM port interface, and access to the Packet Trace Interface (PTI).
All debug functionality, including AEM, VCOM and PTI, can also be used towards an external target instead of the connected radio
board.
To further enhance the WSTK usability, the WSTK Mainboard contains sensors and peripherals demonstrating some of the Wireless
SoC's many capabilities.
The radio board features an EFR32 and the RF interface. Please refer to the Radio Board Reference Manual for detailed specifications
and RF performance figures.
1.1 Kit Contents
The following items are included with the SLWRB4154A:
• 1x BRD4154A EFR32MG1P732 2.4 GHz 19.5 dBm Radio Board
1.2 Getting Started
Detailed instructions for how to get started can be found on the Silicon Labs web pages:
http://www.silabs.com/start-efr32mg
silabs.com
| Smart. Connected. Energy-friendly.
Rev. 1.00 | 1
UG230: EFR32MG1P732 2.4 GHz 19.5 dBm Radio Board
Kit Hardware Overview
2. Kit Hardware Overview
A view of the EFR32MG1P732 2.4 GHz 19.5 dBm Radio Board with a Wireless STK Mainboard is shown below.
Plug-in Radio Board
Radio Board Breakout Pads
On-board USB and
Ethernet J-Link
Debugger
Si7021 Humidity and
Temperature Sensor
USB-serial-port
Packet-trace
Advanced Energy
Monitoring
Battery or
USB power
Ultra-low power 128x128
pixel memory LCD,
buttons and LEDs
EXP-header for
expansion boards
ARM Coresight 19-pin
trace/debug header
Serial-port, packet trace and Advanced
Energy Monitoring header
Figure 2.1. SLWRB4154A with Wireless STK Mainboard
silabs.com
| Smart. Connected. Energy-friendly.
Rev. 1.00 | 2
UG230: EFR32MG1P732 2.4 GHz 19.5 dBm Radio Board
Block Diagram
3. Block Diagram
A system overview of the EFR32MG1P732 2.4 GHz 19.5 dBm Radio Board used together with an Wireless STK Mainboard is shown in
the figure below.
RJ-45 Ethernet
Connector
Board
Controller
USB Mini-B
Connector
Packet Trace
UART
Multiplexer
Simplicity
Connector
AEM
O
U
T
Packet Trace
Debug
ETM Trace
Debug
Connector
Packet Trace
Debug
ETM Trace
Debug
UART
AEM
MCU
IN
UART
AEM
EXP
Header
GPIO
128 x 128 pixel
Memory LCD
User Buttons
& LEDs
GPIO
EFR32
Wireless SoC
2.4 GHz RF
Si7021
I2C
Temperature
& Humidity
Sensor
Inverted-F
PCB Antenna
Figure 3.1. Kit Block Diagram
silabs.com
| Smart. Connected. Energy-friendly.
Rev. 1.00 | 3
UG230: EFR32MG1P732 2.4 GHz 19.5 dBm Radio Board
Connectors
4. Connectors
This chapter gives you an overview of the Wireless Starter Kit Mainboard connectivity. The placement of the connectors can be seen in
the figure below.
D
N D
G GN
C
N NC
5 4
P4 P4
3 2
P4 P4
1 0
P4 P4
9 8
P3 P3
7 6
P3 P3
5 4
P3 P3
3 2
P3 P3
1 0
P3 P3
9 8
P2 P2
7 6
P2 P2
5 4
P2 P2
D
N D
G GN
5V
5V
Simplicity
Connector
4.1 Breakout Pads
J101
VMCU
GND
IOEXP_WAKE / PF3 / P0
NC / P2
BTN0 / PD14 / P4
BTN1 / PD15 / P6
(PB14) / P8
(PB15) / P10
I2C_SCL / PC11 / P12
PTI_DATA / PB12 / P14
PTI_FRAME / PB13 / P16
NC / P18
NC / P20
NC / P22
GND
VRF
VMCU
GND
P1 / PA0 / VCOM_TX / DISP_SI
P3 / PA1 / VCOM_RX
P5 / PB11 / VCOM_CTS / DISP_CLK
P7 / PD13 / VCOM_RTS / DISP_CS
P9 / NC
P11 / PA1 / VCOM_RX
P13 / PC10 / I2C_SDA
P15 / NC
P17 / NC
P19 / NC
P21 / NC
P23 / NC
GND
VRF
In/Out Debug
Header
Figure 4.1. Mainboard Connector Layout
Most of the EFR32's pins are routed from the radio board to breakout pads at the top and bottom edges of the Wireless Starter Kit
Mainboard. A 2.54 mm pitch pin header can be soldered on for easy access to the pins. The figure below shows you how the pins of
the EFR32 maps to the pin numbers printed on the breakout pads. To see the available functions on each, please refer to the
EFR32MG1P732F256GM32 Data Sheet.
5V
GND
NC / P24
NC / P26
NC / P28
NC / P30
NC / P32
NC / P34
IOEXP_DBG_C2D / P36
NC / P38
NC / P40
NC / P42
NC / P44
NC
GND
3V3
Figure 4.2. Radio Board Pin Mapping on Breakout Pads
3
3V V3
3
Ra
Co dio B
nn
ec oard
tor
s
Ex
He pans
ad
i
er on
silabs.com
| Smart. Connected. Energy-friendly.
F F
VR
VR
D
N D
G GN
3 2
P2 P2
1 0
P2 P2
9 8
P1 P1
7 6
P1 P1
5 4
P1 P1
3 2
P1 P1
1 0
P1 P1
P9 P8
P7 P6
P5 P4
P3 P2
P1 P0
D
N D
G GN
U
C U
VM MC
V
J102
5V
GND
P25 / PF0 / DBG_SWCLK
P27 / PF1 / DBG_SWDIO
P29 / PF2 / DBG_SWO
P31 / NC
P33 / NC
P35 / IOEXP_DBG_C2CK
P37 / SENSOR_ENABLE
P39 / NC
P41 / NC
P43 / NC
P45 / NC
NC
GND
3V3
Rev. 1.00 | 4
京公网安备 11010802033920号
EEWORLD
