S55LLRFV25_BLE_02_T is a 2.4GHz ISM band RF Transceiver IP which is designed for Bluetooth Smart applications. It is compliant with the Bluetooth Low Energy (BLE) specification (part of Bluetooth 4.1, volume-6); including support for GFSK modulation and demodulation. When combined with the Bluetooth Smart baseband and controller, it forms a complete Bluetooth Smart solution. A Slave Serial Peripheral Interface (SPI) is used as connection to Baseband or external MCU.