SLEXP8023A Silicon Labs

UG407: WFM200S Wi-Fi Expansion Kit User s Guide The WFM200S Wi-Fi Expansion Kit is an excellent way to ex- WFM200S EXPANSION BOARD FEATURES plore and evaluate the WFM200S Wi-Fi Transceiver Module with a Raspberry Pi or an EFM32 MCU for your embedded applica- Selectable SPI or SDIO host interface tion. EXP connector for interfacing Silicon Labs Starter Kits The WFM200S Wi-Fi Transceiver Module is an easy to use and easy to interface Wi-Fi Allows board detection and identification Network Co-Processor (NCP). Most of the associated complexity of Wi-Fi and the pro- tocol stack is offloaded to the NCP and allows for easy Wi-Fi integration into any em- Raspberry Pi compatible HAT bedded system. 40-pin header HAT EEPROM for identification The kit easily integrates and brings Wi-Fi connectivity to a compatible Silicon Labs MCU Starter Kit through the EXP header. The WFM200S Wi-Fi Expansion Kit has also been designed after the Raspberry Pi Hardware Attached on Top (HAT) board specifi- cation, allowing the WFM200S Wi-Fi Expansion Kit to connect to a Raspberry Pi. silabs.com Building a more connected world. Rev. 1.0 Table of Contents 1. Introduction................................3 1.1 Kit Contents...............................4 2. Hardware Overview.............................5 2.1 Hardware Layout .............................5 3. WFM200S Wi-Fi NCP Expansion Kit.......................6 3.1 Host Interfaces..............................6 3.2 Power-on and Manual Reset Circuit.......................7 4. Connectors................................8 4.1 EXP Header...............................9 4.1.1 Pass-through EXP Header ........................9 4.1.2 EXP Header Pinout...........................10 4.2 Raspberry Pi Connector...........................11 4.2.1 Raspberry Pi Connector Pinout.......................12 4.3 External FEM Connector ..........................13 4.3.1 External FEM Connector Pinout.......................13 4.4 PTA Connector..............................14 4.4.1 PTA Connector Pinout..........................14 4.5 Secondary RF Connector ..........................14 4.6 Power Supply ..............................15 5. Schematics, Assembly Drawings, and BOM................... 16 6. Kit Revision History............................ 17 6.1 SLEXP8023A Revision History ........................17 6.2 SLEXP8023C Revision History ........................17 7. Document Revision History ......................... 18 silabs.com Building a more connected world. Rev. 1.0 2