The MIPI Alliance Specification for RF Front-End Control Interface (RFFE) was developed to offer a common and widespread method for controlling RF front-end devices. There are a variety of front-end devices, including Power Amplifiers (PA), Low-Noise Amplifiers (LNA), filters, switches, power management modules, antenna tuners and sensors. RFFE is mainly an RF front-end-dedicated control interface. RFFE supports point-to-multipoint connectivity RF front-end control. RFFE utilizes a relatively high bus clock frequency of 26 MHz, and by the introduction of time-accurate triggering mechanisms, allows control of timing-critical functions in multiple devices.
Keysight 9000A, 9000 H-, 90000A, 90000 X-, and 90000 Q-Series oscilloscopes offer protocol decode for RFFE designs. The RFFE protocol decoder enables faster and better development of wireless mobile products that employ the RFFE technology. The protocol analysis application lets teams quickly move from physical layer to protocol layer measurements and includes software-based triggering.