A control interface that simplifies integration of complex RF front-end devices

Quick Facts

Physical Layer


Fundamental features
  • High performance
  • Low power
  • Low EMI
  • Multi-point
Use Cases



Carrier aggregation Uplink/downlink



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The MIPI RF Front-End Interface, MIPI RFFESM, is a dedicated control interface for the RF front end of a device. It enhances the control of the complex device environment, which has rigorous performance requirements and can include 10 to 20 components such as power amplifiers, antenna tuners, filters and switches. The interface can be applied to the full range of RF front-end components to simplify product design, configuration and integration, and to facilitate interoperability of components supplied by different vendors. The conveniences make it easier for manufacturers to address end-user needs for faster data speeds and better call quality, develop scalable solutions, and expedite time to market for new designs in the mobile, automotive and Internet of Things sectors.

The MIPI RF Front-End Interface is used by RF device vendors, baseband and transceiver vendors, and mobile device OEMs. It is a two-wire interface that uses CMOS I/Os. It can be used with a broad range of bus operating frequencies and features synchronous read capability, multi-master configuration, support for carrier aggregation and the use of multiple transceivers and dual-SIM designs, interrupt-capable slave functionality, and reserved registers that improve the efficiency of hardware and software development.

The MIPI RF Front-End Interface is developed by the MIPI RF Front-End Control Working Group. The current release, v2.0, was released in 2014. It is a forward-looking solution that can be enhanced to address future RF front-end requirements, and it is backward compatible with earlier versions of the specification.

The specification is available only to MIPI Alliance members. For information about joining MIPI Alliance, visit Join MIPI.