SLWRB4251D Silicon Labs

UG185: EFR32FG1 2400/169 MHz Dual Band Radio Board User s Guide A Wireless Starter Kit with the BRD4251D Radio Board is an ex- BRD4251D RADIO BOARD FEATURES cellent starting point to get familiar with the EFR32 Flex Gecko Wireless System-on-Chip, and it provides all necessary tools for EFR32FG1 Flex Gecko Wireless SoC with 256 kB Flash, and 32 kB RAM developing a Silicon Labs wireless application. (EFR32FG1P133F256GM48) Dual band integrated radio transceiver BRD4251D is a plug-in board for the Wireless Starter Kit Mainboard. It is a complete ref- erence design for the EFR32FG1 Wireless SoC, with matching networks for 19.5 dBm 19.5 dBm output power output power, a 2.4 GHz PCB antenna, and an SMA connector for the 169 MHz band. Inverted-F PCB antenna (2.4 GHz) SMA antenna connector (169 MHz) The Wireless Starter Kit Mainboard contains an on-board J-Link debugger with a Packet 8 Mbit low-power serial flash for over-the- Trace Interface and a Virtual COM port, enabling application development and debug- air upgrades. ging the attached radio board as well as external hardware. The Mainboard also con- tains sensors and peripherals for easy demonstration of some of the EFR32 s many ca- WIRELESS STK MAINBOARD FEATURES pabilities. Advanced Energy Monitor This document describes how to use the BRD4251D Radio Board together with a Wire- Packet Trace Interface less Starter Kit Mainboard. Virtual COM Port SEGGER J-Link on-board debugger External device debugging Ethernet and USB connectivity Silicon Labs Si7021 Relative Humidity and Temperature sensor Low Power 128x128 pixel Memory LCD User LEDs / Pushbuttons 20-pin 2.54 mm EXP header Breakout pads for Wireless SoC I/O CR2032 coin cell battery support SOFTWARE SUPPORT Simplicity Studio Energy Profiler Network Analyzer ORDERING INFORMATION SLWRB4251D silabs.com Building a more connected world. Rev. 1.1 Table of Contents 1. Introduction................................4 1.1 Radio Boards..............................4 1.2 Ordering Information ...........................4 1.3 Getting Started .............................4 2. Hardware Overview.............................5 2.1 Hardware Layout.............................5 2.2 Block Diagram..............................6 3. Connectors................................7 3.1 J-Link USB Connector...........................7 3.2 Ethernet Connector............................7 3.3 Breakout Pads .............................8 3.4 EXP Header ..............................9 3.4.1 EXP Header Pinout..........................10 3.5 Debug Connector.............................11 3.6 Simplicity Connector............................12 3.7 Debug Adapter .............................13 4. Power Supply and Reset.......................... 14 4.1 Radio Board Power Selection ........................14 4.2 Board Controller Power...........................15 4.3 EFR32 Reset..............................15 4.4 Battery Holder..............................15 5. Peripherals............................... 16 5.1 Push Buttons and LEDs ..........................16 5.2 Memory LCD-TFT Display..........................17 5.3 Serial Flash ..............................18 5.4 Si7021 Relative Humidity and Temperature Sensor .................19 5.5 Virtual COM Port.............................20 5.5.1 Host Interfaces ...........................21 5.5.2 Serial Configuration..........................21 5.5.3 Hardware Handshake .........................22 6. Board Controller............................. 23 6.1 Admin Console .............................23 6.1.1 Connecting.............................23 6.1.2 Built-in Help ............................23 6.1.3 Command Examples .........................24 6.2 Virtual UART ..............................24 silabs.com Building a more connected world. Rev. 1.1 2