Silicon Laboratories EFR32MG1P732 Manuel utilisateur

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

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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

UG230: EFR32MG1P732 2.4 GHz 19.5 dBm Radio Board

Introduction

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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.

On-board USB and

Ethernet J-Link

Debugger

Radio Board Breakout Pads

Plug-in Radio Board

Si7021 Humidity and

Temperature Sensor

EXP-header for

expansion boards

Serial-port, packet trace and Advanced

Energy Monitoring header

ARM Coresight 19-pin

trace/debug header

Ultra-low power 128x128

pixel memory LCD,

buttons and LEDs

Battery or

USB power

USB-serial-port

Packet-trace

Advanced Energy

Monitoring

Figure 2.1. SLWRB4154A with Wireless STK Mainboard

UG230: EFR32MG1P732 2.4 GHz 19.5 dBm Radio Board

Kit Hardware Overview

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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.

Debug

USB Mini-B

Connector

UART

RJ-45 Ethernet

Connector

Packet Trace

AEM

Multiplexer

Debug

UART

ETM Trace

Packet Trace

AEM

Debug

UART

Packet Trace

AEM

Simplicity

Connector

Debug

Connector

Board

Controller

OUT

MCU

2.4 GHz RF

Inverted-F

PCB Antenna

EFR32

Wireless SoC

ETM Trace

128 x 128 pixel

Memory LCD

I2C Si7021

Temperature

& Humidity

Sensor

GPIO

EXP

Header

User Buttons

& LEDs

GPIO

Figure 3.1. Kit Block Diagram

UG230: EFR32MG1P732 2.4 GHz 19.5 dBm Radio Board

Block Diagram

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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.

Simplicity

Connector

In/Out Debug

Header

GND

P25

P24

P27

P26

P29

P28

P31

P30

P33

P32

P35

P34

P37

P36

P39

P38

P41

P40

P43

P42

P45

P44

GND

Radio Board

Connectors

Expansion

Header

GND

VMCU

P11

P10

P13

P12

P15

P14

P17

P16

P19

P18

P21

P20

GND

P23

P22

VRF

3V3

Figure 4.1. Mainboard Connector Layout

4.1 Breakout Pads

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.

GND

VMCU

P23 / NC

P21 / NC

P19 / NC

P17 / NC

GND

P15 / NC

P13 / PC10 / I2C_SDA

P11 / PA1 / VCOM_RX

P9 / NC

P7 / PD13 / VCOM_RTS / DISP_CS

P5 / PB11 / VCOM_CTS / DISP_CLK

P3 / PA1 / VCOM_RX

P1 / PA0 / VCOM_TX / DISP_SI

GNDGND

5V5V

NCNC

P45 / NCNC / P44

P43 / NCNC / P42

P41 / NCNC / P40

3V33V3

P39 / NCNC / P38

P37 / SENSOR_ENABLEIOEXP_DBG_C2D / P36

P35 / IOEXP_DBG_C2CKNC / P34

P33 / NCNC / P32

P31 / NCNC / P30

P29 / PF2 / DBG_SWONC / P28

P27 / PF1 / DBG_SWDIONC / P26

P25 / PF0 / DBG_SWCLKNC / P24

GNDGND

VRF

GND

VMCU

NC / P22

NC / P20

NC / P18

PTI_FRAME / PB13 / P16

GND

PTI_DATA / PB12 / P14

I2C_SCL / PC11 / P12

(PB15) / P10

(PB14) / P8

BTN1 / PD15 / P6

BTN0 / PD14 / P4

NC / P2

IOEXP_WAKE / PF3 / P0

VRF

J101 J102

Figure 4.2. Radio Board Pin Mapping on Breakout Pads

UG230: EFR32MG1P732 2.4 GHz 19.5 dBm Radio Board

Connectors

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4.2 Expansion Header

On the right hand side of the board an angled 20-pin expansion header is provided to allow connection of peripherals or plugin boards.

The connector contains a number of I/O pins that can be used with most of the EFR32 Mighty Gecko's features. Additionally, the

VMCU, 3V3 and 5V power rails are also exported.

The connector follows a standard which ensures that commonly used peripherals such as an SPI, a UART and an I2C bus are available

on fixed locations in the connector. The rest of the pins are used for general purpose IO. This allows the definition of expansion boards

that can plug into a number of different Silicon Labs starter kits.

The figure below shows the pin assignment of the expansion header for the EFR32MG1P732 2.4 GHz 19.5 dBm Radio Board. Because

of limitations in the number of available GPIO pins, some of the expansion header pins are shared with kit features.

1516

20 19

VMCU

SPI_MOSI / PA0

SPI_MISO / PA1

SPI_CLK / PB11

SPI_CS / PD13

I2C_SDA / PC10

3V3

GND

PF3 / GPIO

PD14 / GPIO

PD15 / GPIO

(PB14) / GPIO

(PB15) / GPIO

PC11 / I2C_SCL

Board ID SDA

Board ID SCL

Reserved (Board Identification)

EFR32 I/O Pin

Figure 4.3. Expansion Header

UG230: EFR32MG1P732 2.4 GHz 19.5 dBm Radio Board

Connectors

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4.2.1 Expansion Header Pin-out

The pin-routing on the EFR32 is very flexible, so most peripherals can be routed to any pin. However, many pins are shared between

the Expansion Header and other functions on the Wireless STK Mainboard. Table 4.1 Expansion Header Pinout on page 6 includes

an overview of the mainboard features that share pins with the Expansion Header.

Table 4.1. Expansion Header Pinout

Pin Connection EXP Header function Shared feature Peripheral mapping

20 3V3 Board controller supply

18 5V Board USB voltage

16 PC10 I2C_SDA SENSOR_I2C_SDA,

IOEXP_I2C_SDA

I2C0_SDA #15

14 Not Connected

12 Not Connected

10 PD13 SPI_CS VCOM_RTS, DISP_CS USART0_CS #18

8 PB11 SPI_CLK VCOM_CTS, DISP_CLK USART0_CLK #4

6 PA1 SPI_MISO VCOM_RX USART0_RX #0

4 PA0 SPI_MOSI VCOM_TX, DISP_MOSI USART0_TX #0

2 VMCU EFR32 voltage domain, included in AEM measurements.

19 BOARD_ID_SDA Connected to Board Controller for identification of add-on boards.

17 BOARD_ID_SCL Connected to Board Controller for identification of add-on boards.

15 PC11 I2C_SCL SENSOR_I2C_SCL,

IOEXP_I2C_SCL

I2C0_SCL #15

13 (PB15 with opt. solder bridge) GPIO (LFXTAL)

11 (PB14 with opt. solder bridge) GPIO (LFXTAL)

9 PD15 GPIO BTN1

7 PD14 GPIO BTN0

5 Not Connected

3 PF3 GPIO IOEXP_WAKE

1 GND Ground

Note: Pin PF3 is used for DBG_TDI in JTAG mode only. When Serial Wire Debugging is used, PF3 can be used for other purposes.

UG230: EFR32MG1P732 2.4 GHz 19.5 dBm Radio Board

Connectors

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4.3 Debug Connector

The Debug Connector serves multiple purposes based on the "debug mode" setting which can be configured in Simplicity Studio. When

mode is set to "Debug IN", this connector allows an external debug emulator to be used with the radio board EFR32. When set to "De-

bug OUT", this connector allows the kit to be used as a debugger towards an external target. When set to "Debug MCU" (default), this

connector is isolated from the debug interface of both the Board Controller and the on-board target device.

Because this connector is automatically switched to support the different operating modes, it is only available when the Board Controller

is powered (J-Link USB cable connected). If debug access to the target device is required when the Board Controller is unpowered, this

should be done by connecting directly to the appropriate breakout pins.

The pinout of the connector follows that of the standard ARM Cortex Debug+ETM 19-pin connector. The pinout is described in detail

below. Even though the connector has support for both JTAG and ETM Trace, it does not necessarily mean that the kit or the on-board

target device supports this.

1 2

13 14

15 16

17 18

TMS / SWDIO / C2D

TCK / SWCLK / C2CK

TDO / SWO

TDI / C2Dps

TRACECLK

TRACED0

TRACED1

TRACED2

TRACED3

RESET / C2CKps

GND

VTARGET

Cable Detect

Figure 4.4. Debug Connector

Note: The pinout matches the pinout of an ARM Cortex Debug+ETM connector, but these are not fully compatible as pin 7 is physically

removed from the Cortex Debug+ETM connector. Some cables have a small plug that prevent them from being used when this pin is

present. If this is the case, remove the plug, or use a standard 2x10 1.27 mm straight cable instead.

Table 4.2. Debug Connector Pin Descriptions

Pin number(s) Function Description

1 VTARGET Target voltage on the debugged application.

2 TMS / SDWIO / C2D JTAG test mode select, Serial Wire data or C2 data

4 TCK / SWCLK / C2CK JTAG test clock, Serial Wire clock or C2 clock

6 TDO/SWO JTAG test data out or Serial Wire Output

8 TDI / C2Dps JTAG test data in, or C2D "pin sharing" function

10 RESET / C2CKps Target device reset, or C2CK "pin sharing" function

12 TRACECLK Not connected

14 TRACED0 Not connected

16 TRACED1 Not connected

18 TRACED2 Not connected

20 TRACED3 Not connected

9 Cable detect Connect to ground

11, 13 NC Not connected

3, 5, 15, 17, 19 GND Ground

UG230: EFR32MG1P732 2.4 GHz 19.5 dBm Radio Board

Connectors

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4.4 Simplicity Connector

The Simplicity Connector featured on the Wireless Starter Kit Mainboard enables advanced debugging features such as the AEM, the

Virtual COM port and the Packet Trace Interface to be used towards an external target. The pinout is illustrated in the figure below.

VMCU 1

33V3

GND

Board ID SCL

Board ID SDA

2Virtual COM TX / MOSI

4Virtual COM RX / MISO

6Virtual COM CTS / SCLK

8Virtual COM RTS / CS

10 Packet Trace 0 Sync

12 Packet Trace 0 Data

14 Packet Trace 0 Clock

16 Packet Trace 1 Sync

18 Packet Trace 1 Data

20 Packet Trace 1 Clock

Figure 4.5. Simplicity Connector

Note: Current drawn from the VMCU voltage pin is included in the AEM measurements, while the 3V3 and 5V voltage pins are not. To

monitor the current consumption of an external target with the AEM, unplug the WSTK Radio Board from the WSTK Mainboard to avoid

that the Radio Board current consumption is added to the measurements.

Table 4.3. Simplicity Connector Pin Descriptions

Pin number(s) Function Description

1 VMCU 3.3 V power rail, monitored by the AEM

3 3V3 3.3 V power rail

5 5V 5 V power rail

2 VCOM_TX_MOSI Virtual COM Tx/MOSI

4 VCOM_RX_MISO Virtual COM Rx/MISO

6 VCOM_CTS_SCLK Virtual COM CTS/SCLK

8 VCOM_RTS_CS Virtual COM RTS/CS

10 PTI0_SYNC Packet Trace 0 Sync

12 PTI0_DATA Packet Trace 0 Data

14 PTI0_CLK Packet Trace 0 Clock

16 PTI1_SYNC Packet Trace 1 Sync

18 PTI1_DATA Packet Trace 1 Data

20 PTI1_CLK Packet Trace 1 Clock

17 EXT_ID_SCL Board ID SCL

19 EXT_ID_SDA Board ID SDA

7, 9, 11, 13, 15 GND Ground

UG230: EFR32MG1P732 2.4 GHz 19.5 dBm Radio Board

Connectors

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5. Power Supply and Reset

5.1 Radio Board Power Selection

The EFR32 on a Wireless Starter Kit can be powered by one of these sources:

• the debug USB cable;

• a 3V coin cell battery; or

• a USB regulator on the Radio Board (for devices with USB support only).

The power source for the radio board is selected with the slide switch in the lower left corner of the Wireless STK Mainboard. Figure

5.1 Power Switch on page 9 shows how the different power sources can be selected with the slide switch.

VMCU

AEM

USB

BAT

USB Mini-B

Connector

Advanced

Energy

Monitor

3 V Lithium Battery

(CR2032)

BAT

USB

AEM

LDO

EFR32

5 V 3.3 V

Figure 5.1. Power Switch

With the switch in the AEM position, a low noise 3.3 V LDO on the WSTK Mainboard is used to power the Radio Board. This LDO is

again powered from the debug USB cable. The Advanced Energy Monitor is now also connected in series, allowing accurate high

speed current measurements and energy debugging/profiling.

With the switch in the USB position, radio boards with USB-support can be powered by a regulator on the radio board itself. BRD4154A

does not contain an USB regulator, and setting the switch in the USB postition will cause the EFR32 to be unpowered.

Finally, with the switch in the BAT position, a 20 mm coin cell battery in the CR2032 socket can be used to power the device. With the

switch in this position no current measurements are active. This is the recommended switch position when powering the radio board

with an external power source.

Note: The current sourcing capabilities of a coin cell battery might be too low to supply certain wireless applications.

Note: The Advanced Energy Monitor can only measure the current consumption of the EFR32 when the power selection switch is in

the AEM position.

UG230: EFR32MG1P732 2.4 GHz 19.5 dBm Radio Board

Power Supply and Reset

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