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5.3  Serial Flash

The  BRD4104A  radio  board  is  equipped  with  an  8  Mbit  Macronix  MX25R  SPI  flash  that  is  connected  directly  to  the  EFR32. 

Figure

5.3 Radio Board Serial Flash on page 14

 shows how the serial flash is connected to the EFR32.

PC8 (US1_CLK#11)

PC6 (US1_TX#11)

PC7 (US1_RX#11)

PA4 (US1_CS#1)

EFR32

MX25R8035F

SCLK

MOSI

MISO

SCS

VMCU

VDD

8 Mbit

Figure 5.3.  Radio Board Serial Flash

The MX25R series are ultra low power serial flash devices, so there is no need for a separate enable switch to keep current consump-
tion down. However, it is important that the flash is always put in deep power down mode when not used. This is done by issuing a
command over the SPI interface. In deep power down, the MX25R typically adds approximately 100 nA to the radio board current con-
sumption.

UG279: EFR32BG13 Blue Gecko Bluetooth Starter Kit User's Guide

Peripherals

silabs.com

 | Smart. Connected. Energy-friendly.

Rev. 1.00  |  14

Содержание EFR32BG13 Blue Gecko

Страница 1: ...ice specific hardware WSTK MAINBOARD FEATURES Ethernet and USB connectivity Advanced Energy Monitor Virtual COM Port Packet Trace Interface support SEGGER J Link on board debugger Supports debugging t...

Страница 2: ...Power Supply and Reset 10 4 1 Radio Board Power Selection 10 4 2 Board Controller Power 11 4 3 EFR32 Reset 11 5 Peripherals 12 5 1 Push Buttons and LEDs 12 5 2 Memory LCD TFT Display 13 5 3 Serial Fla...

Страница 3: ...23 8 1 3 Serial Number Identification 23 8 2 Debug Modes 24 8 3 Debugging During Battery Operation 25 9 Kit Configuration and Upgrades 26 9 1 Firmware Upgrades 26 10 Schematics Assembly Drawings and B...

Страница 4: ...different radio boards 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...

Страница 5: ...ature 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...

Страница 6: ...race AEM Simplicity Connector Debug Connector Board Controller O U T I N MCU SMA Connector 2 4 GHz RF Inverted F PCB Antenna EFR32BG13 Wireless SoC ETM Trace 128 x 128 pixel Memory LCD I2C Si7021 Temp...

Страница 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 abl...

Страница 8: ...M_CTS EXP3 PA2 P0 VRF J101 J102 Figure 3 2 Radio Board Pin Mapping on Breakout Pads 3 4 Expansion Header On the right hand side of the Wireless STK Mainboard an angled 20 pin expansion header is provi...

Страница 9: ...USART0_TX 0 10 PC9 SPI_CS USART1_CS 11 8 PC8 SPI_SCLK FLASH_SCLK DISP_SCLK USART1_CLK 11 6 PC7 SPI_MISO FLASH_MISO USART1_RX 11 4 PC6 SPI_MOSI FLASH_MOSI DISP_MOSI USART1_TX 11 2 VMCU EFR32 voltage do...

Страница 10: ...TMS SWDIO C2D TCK SWCLK C2CK TDO SWO TDI C2Dps TRACECLK TRACED0 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 m...

Страница 11: ...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 De...

Страница 12: ...esigns 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 Interfa...

Страница 13: ...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...

Страница 14: ...eep the board controller and the target power domains isolated from each other as one of them powers down This ensures that the target EFR32 device will continue to operate in the USB and BAT modes 4...

Страница 15: ...nnected directly to the EFR32 and are debounced by RC filters with a time constant of 1 ms The buttons are connected to pins PF6 and PF7 The kit also features two yellow LEDs marked LED0 and LED1 that...

Страница 16: ...ser 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 EFR32 has con...

Страница 17: ...3 Radio Board Serial Flash The MX25R series are ultra low power serial flash devices so there is no need for a separate enable switch to keep current consump tion down However it is important that th...

Страница 18: ...ory 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...

Страница 19: ...ins Signal Description VCOM_TX Transmit data from the EFR32 to the board controller VCOM_RX Receive data from the board controller to the EFR32 VCOM_CTS Clear to Send hardware flow control input asser...

Страница 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 w...

Страница 21: ...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...

Страница 22: ...it 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 connectiv...

Страница 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 applia...

Страница 24: ...ssing within the kit s board controller before the current sense signal is read by a host computer for display and or storage The current sense amplifier measures the voltage drop over a small series...

Страница 25: ...00 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 con...

Страница 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...

Страница 27: ...ed to the EFR32 on the kit RADIO BOARD Board Controller 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 suppor...

Страница 28: ...If the USB power is disconnected the Debug In mode will stop working If debug access is required when the target is running of another energy source such as a battery and the board controller is powe...

Страница 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...

Страница 30: ...bill of materials BOM are available through Simplicity Studio when the kit documentation pack age has been installed UG279 EFR32BG13 Blue Gecko Bluetooth Starter Kit User s Guide Schematics Assembly...

Страница 31: ...02042 14 06 17 A00 Figure 11 1 Kit Label 11 1 SLWSTK6020B Revision history Kit Revision Released Description A00 2017 06 14 Initial release 11 2 SLWRB4104A Revision history Kit Revision Released Descr...

Страница 32: ...Revision History Revision 1 00 2017 05 15 Initial document version UG279 EFR32BG13 Blue Gecko Bluetooth Starter Kit User s Guide Document Revision History silabs com Smart Connected Energy friendly R...

Страница 33: ...ply 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 spe...

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