Silicon Laboratories BRD4542B User Manual Download Page 6

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2.2 Block Diagram

An overview of the EZR32HG 434 MHz 10 dBm Wireless Starter Kit is shown in the figure below.

USB Micro-B

Connector

Debug

USB Mini-B

Connector

RJ-45 Ethernet

Connector

Packet T

race

AEM

Multiplexer

Debug

UART

ETM Trace

Packet Trace

AEM

Debug

UAR

cket

race

AEM

Simplicity

Connector

Debug

Connector

Board

Controller

OUT

MCU

EZR32HG

Wireless MCU

ETM T

race

128 x 128 pixel

Memory LCD

I2C

Si7021

Temperature

& Humidity

Sensor

GPIO

EXP

Header

User Buttons

& LEDs

GPIO

SMA

Connector

Figure 2.2. Kit Block Diagram

UG191: EZR32HG 434 MHz 10 dBm Wireless Starter Kit User's Guide

Hardware Overview

silabs.com

| Building a more connected world.

Rev. 1.01 | 6

Summary of Contents for BRD4542B

Page 1: ...ard as well as external hardware The Mainboard also con tains sensors and peripherals for easy demonstration of some of the EZR32 s many ca pabilities This document describes how to use the BRD4542B Radio Board together with a Wire less Starter Kit Mainboard BRD4542B RADIO BOARD FEATURES EZR32 Happy Gecko Wireless MCU with 64 kB Flash and 8 kB RAM EZR32HG320F64R55G 10 dBm output power SMA connecto...

Page 2: ...wer Supply and Reset 14 4 1 Radio Board Power Selection 14 4 2 Board Controller Power 14 4 3 EZR32 Reset 15 5 Peripherals 16 5 1 USB Micro B Connector 16 5 2 Push Buttons and LEDs 16 5 3 Memory LCD TFT Display 17 5 4 Si7021 Relative Humidity and Temperature Sensor 18 5 5 Virtual COM Port 19 5 5 1 Host Interfaces 20 5 5 2 Serial Configuration 20 5 5 3 Hardware Handshake 21 6 Board Controller 22 6 1...

Page 3: ...26 8 1 3 Serial Number Identification 26 8 2 Debug Modes 27 8 3 Debugging During Battery Operation 28 9 Kit Configuration and Upgrades 29 9 1 Firmware Upgrades 29 10 Schematics Assembly Drawings and BOM 30 11 Kit Revision History 31 11 1 SLWSTK6241A Revision History 31 11 2 SLWRB4542B Revision History 31 12 Document Revision History 32 silabs com Building a more connected world Rev 1 01 3 ...

Page 4: ...ards the actual pin mapping from a device pin to a mainboard feature is done on the radio board This means that each radio board has its own pin mapping to the Wireless Starter Kit features such as buttons LEDs the display the EXP header and the breakout pads Because this pin mapping is different for every radio board it is important that the correct document be consulted which shows the kit featu...

Page 5: ...ture 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 Kit Hardware Layout UG191 EZR32HG 434 MHz 10 dBm Wireless Starter Kit User s Guide Hardware Overview silabs...

Page 6: ...TM Trace Packet Trace AEM Debug UART Packet Trace AEM Simplicity Connector Debug Connector Board Controller O U T I N MCU EZR32HG Wireless MCU ETM Trace 128 x 128 pixel Memory LCD I2C Si7021 Temperature Humidity Sensor GPIO EXP Header User Buttons LEDs GPIO SMA Connector Figure 2 2 Kit Block Diagram UG191 EZR32HG 434 MHz 10 dBm Wireless Starter Kit User s Guide Hardware Overview silabs com Buildin...

Page 7: ...f the kit this USB connector is also the main power source for the kit USB 5V from this connector powers the board controller and the Advanced Energy Monitor It is recommended that the USB host be able to supply at least 500 mA to this connector although the actual current required will vary depending on the application 3 2 Ethernet Connector The Ethernet connector provides access to all of the Wi...

Page 8: ...RX P9 EXP12 PD4 VCOM_TX P7 EXP10 PE13 P5 EXP8 PE12 DISP_SCLK P3 EXP6 PE11 P1 EXP4 PE10 DISP_SI VRF GND VMCU DISP_EXTCOMIN PF3 P22 DBG_TCK_SWCLK PF0 P20 NC P18 NC P16 GND DISP_CS PA0 P14 I2C_SCL PD7 EXP15 P12 NC EXP13 P10 PB11 EXP11 P8 BTN1 PC10 EXP9 P6 BTN0 PC9 EXP7 P4 LED0 PF4 EXP5 P2 LED1 PF2 EXP3 P0 VRF J101 GND GND 5V 5V NC NC P45 NC NC P44 P43 NC NC P42 P41 NC NC P40 3V3 3V3 P39 NC NC P38 P37...

Page 9: ...pose 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 Because of limitations in the number of available GPIO pins some of the expansion header pins are shared with kit features 1 2 4 8 6 10 3 5 9 7 12 13 14 11 15 16 17 18 20 19 VMCU SPI_MOSI PE10 SPI_MISO PE11 SPI_C...

Page 10: ...RX_MISO LEUART0_RX 0 12 PD4 UART_TX VCOM_TX_MOSI LEUART0_TX 0 10 PE13 SPI_CS USART0_CS 0 8 PE12 SPI_SCLK DISP_SCLK USART0_CLK 0 6 PE11 SPI_MISO USART0_RX 0 4 PE10 SPI_MOSI DISP_MOSI USART0_TX 0 2 VMCU EZR32 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...

Page 11: ...D0 TRACED1 TRACED2 TRACED3 RESET C2CKps GND NC NC GND GND GND 7 GND VTARGET Cable Detect NC 3 Figure 3 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 c...

Page 12: ...external target with the AEM unplug the Radio Board from the Wireless STK Mainboard to avoid that the Radio Board current consumption is added to the measurements Table 3 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 Virtual COM Tx 4 VCOM_RX Virtual COM Rx 6 VCOM_CTS Virtua...

Page 13: ...gns that use this connector The Mini Simplicity Connector is designed to offer advanced debug features from the Starter Kit on a 10 pin connector Serial Wire Debug SWD with SWO Packet Trace Interface PTI Virtual COM Port VCOM AEM Monitored voltage rail Note Packet Trace is only available on Wireless STK Mainboards MCU Starter Kits do not support Packet Trace VAEM 1 3 RST 5 VCOM_TX 9 PTI_FRAME 7 SW...

Page 14: ...et 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 t...

Page 15: ... reset sources mentioned above a reset to the EZR32 will also be issued during Board Controller boot up This means that removing power to the Board Controller unplugging the J Link USB cable will not generate a reset but plugging the cable back in will as the Board Controller boots up UG191 EZR32HG 434 MHz 10 dBm Wireless Starter Kit User s Guide Power Supply and Reset silabs com Building a more c...

Page 16: ...tor USB_DM PC14 USB_DP PC15 USB_VBUS USB_VREGI USB_VREGO 1 uF 4 7 uF EZR32 Figure 5 1 Radio Board USB Connector 5 2 Push Buttons and LEDs The kit has two user push buttons marked PB0 and PB1 They are connected directly to the EZR32 and are debounced by RC filters with a time constant of 1 ms The buttons are connected to pins PC9 and PC10 The kit also features two yellow LEDs marked LED0 and LED1 t...

Page 17: ...he user application always controls ownership of the display with the DISP_ENABLE signal DISP_ENABLE LOW The Board Controller has control of the display DISP_ENABLE HIGH The user application EZR32 has control of the display Power to the display is sourced from the target application power domain when the EZR32 controls the display and from the Board Controller s power domain when the DISP_ENABLE l...

Page 18: ...y installed cover offers a low profile convenient means of protecting the sensor during assembly e g reflow soldering and throughout the life of the product excluding liquids hydrophobic oleophobic and particulates The Si7021 offers an accurate low power factory calibrated digital solution ideal for measuring humidity dew point and temperature in applications ranging from HVAC R and asset tracking...

Page 19: ...face Pins Signal Description VCOM_TX Transmit data from the EZR32 to the board controller VCOM_RX Receive data from the board controller to the EZR32 VCOM_CTS Clear to Send hardware flow control input asserted by the board controller when it is ready to receive more data VCOM_RTS Request to Send hardware flow control output asserted by the EZR32 when it is ready to receive more data VCOM_ENABLE En...

Page 20: ...the traget device Connecting to the Wireless STK on port 4901 gives access to the same data over TCP IP Data written into the VCOM interface by the target device can be read from the socket and data written into the socket is transmitted to the target device Note Only one of these interfaces can be used at the same time with the TCP IP socket taking priority This means that if a socket is connecte...

Page 21: ...d so the target firmware must be able to accept at least one more character after RTS is de asserted VCOM_RTS is connected to the CTS pin of the board controller and is enabled by setting handshake to either CTS or RTSCTS using the serial vcom config command in the Admin Console If CTS flow control is disabled the state of VCOM_RTS will be ignored and data will be transmitted to the target device ...

Page 22: ...Kit must be connected to Ethernet using the Ethernet connector in the top left corner of the mainboard for the admin console to be available See Ethernet Interface for details on the Ethernet connectivity Connect to the Admin Console by opening a telnet connection to the kit s IP address port number 4902 When successfully connected a WSTK prompt is displayed 6 1 2 Built in Help The admin console h...

Page 23: ...tion data interface that does not require any additional I O pins apart from the debug interface It is based on SEGGER s Real Time Transfer RTT technology and uses Serial Wire Output SWO to get appliaction data from the device and a shared memory interface to send data to the target application The Wireless Starter Kit makes the Virtual UART interface available on TCP IP port 4900 UG191 EZR32HG 43...

Page 24: ...or display and or storage The current sense amplifier measures the voltage drop over a small series resistor and the gain stage further amplifies this voltage with two different gain settings to obtain two current ranges The transition between these two ranges occurs around 250 µA The current signal is combined with the target processor s Program Counter PC sampling by utilizing a feature of the A...

Page 25: ...s 100 nA The AEM current sampling rate is 10 kHz Note The AEM circuitry only works when the kit is powered and the power switch is in the AEM position 7 4 Usage The AEM data is collected by the board controller and can be displayed by the Energy Profiler available through Simplicity Studio By using the Energy Profiler current consumption and voltage can be measured and linked to the actual code ru...

Page 26: ... serial number when connecting over Ethernet this typically require the computer and the kit to be on the same subnet for the discovery proto col using UDP broadcast packets to work 8 1 1 USB Interface The USB interface is available whenever the USB Mini B connector on the left hand side of the mainboard is connected to a computer 8 1 2 Ethernet Interface The Ethernet interface is available when t...

Page 27: ...oller USB Host Computer DEBUG HEADER External Hardware Figure 8 1 Debug MCU Debug OUT In this mode the on board debugger can be used to debug a supported Silicon Labs device mounted on a custom board Board Controller USB Host Computer DEBUG HEADER External Hardware RADIO BOARD Figure 8 2 Debug OUT Debug IN In this mode the on board debugger is disconnected and an external debugger can be connected...

Page 28: ...will stop working If debug access is required when the target is running off another energy source such as a battery and the board controller is powered down the user should make direct connections to the GPIO used for debugging This can be done by connecting to the appropriate pins of the breakout pads Some Silicon Labs kits provide a dedicated pin header for this purpose UG191 EZR32HG 434 MHz 10...

Page 29: ...nfiguration dialog Figure 9 1 Simplicity Studio Kit Information Figure 9 2 Kit Configuration Dialog 9 1 Firmware Upgrades Upgrading the kit firmware is done through Simplicity Studio Simplicity Studio will automatically check for new updates on startup You can also use the kit configuration dialog for manual upgrades Click the Browse button in the Update Adapter section to select the correct file ...

Page 30: ...d bill of materials BOM are available through Simplicity Studio when the kit documentation pack age has been installed UG191 EZR32HG 434 MHz 10 dBm Wireless Starter Kit User s Guide Schematics Assembly Drawings and BOM silabs com Building a more connected world Rev 1 01 30 ...

Page 31: ...ription D00 28 September 2016 Removed coin cell battery from kit due to shipping restrictions C00 20 September 2016 Removed BRD8010A Debug Adapter B00 9 February 2016 Added BRD8010A Debug Adapter A00 9 September 2015 Initial kit release 11 2 SLWRB4542B Revision History Kit Revision Released Description A00 27 April 2016 Initial release UG191 EZR32HG 434 MHz 10 dBm Wireless Starter Kit User s Guide...

Page 32: ...41A and SLWRB4542B Added SLWSTK6241A Rev B00 C00 and D00 in SLWSTK6241A Revision History section Added SLWRB4542B Revision History section Revision 1 00 1 April 2016 Initial document version UG191 EZR32HG 434 MHz 10 dBm Wireless Starter Kit User s Guide Document Revision History silabs com Building a more connected world Rev 1 01 32 ...

Page 33: ...mply or express copyright licenses granted hereunder to design or fabricate any integrated circuits The products are not designed or authorized to be used within any Life Support System without the specific written consent of Silicon Labs A Life Support System is any product or system intended to support or sustain life and or health which if it fails can be reasonably expected to result in signif...

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