The MIPI Alliance announced version 2.0 of the RF Front-End (RFFE) Control Interface specification, which simplifies the design and interoperability of RFFE devices. (Image courtesy of the MIPI Alliance)

Standards Update: MIPI Alliance Spec for RF Front-End Control Interface 2.0

March 24, 2015
The MIPI Alliance announced version 2.0 of the RF Front-End (RFFE) Control Interface specification, which simplifies the design and interoperability of RFFE devices.

Version 2.0 of the MIPI RF Front-End (RFFE) Control Interface specification adds new features that enhance the controls of complex RF front-end environments with up to 20 components. The interface can be applied to a range of RFFE components to simplify design, configuration, and integration, as well as facilitate interoperability.

The updated MIPI Alliance spec brings five key features to the interface of front-end devices, such as power amplifiers, low-noise amplifiers, filters, switches, power-management modules, antenna tuners, and sensors. For example, an extended range of bus operating frequencies effectively doubles the number of command sequences that can be transferred on the bus in a given timeframe. In addition, synchronous read allows for more types of data propagation on the bus via slave devices, leading to extended bus-loading and frequency ranges.

To support carrier-aggregation system architectures and use of multiple transceivers and dual-SIM designs, the spec includes multi-master configuration. An interrupt-capable slave functionality enables a quick polling method of slave devices to the master controller on the bus. Finally, a new reserved register helps improve the efficiency of hardware and software developments.

Version 2.0 of the spec was worked on by the MIPI RFFE Working Group which surveyed MIPI Alliance and International Wireless Industry Consortium (IWPC) members to assess the market’s needs and identify necessary features. The group is currently working on further refinements to RFFE regarding electrical and digital details, flexible bus configurations, and multiple message types.

The MIPI Alliance’s charter is to develop interface specifications for mobile and mobile-influenced industries.

Sponsored Recommendations

Getting Started with Python for VNA Automation

April 19, 2024
The video goes through the steps for starting to use Python and SCPI commands to automate Copper Mountain Technologies VNAs. The process of downloading and installing Python IDC...

Can I Use the VNA Software Without an Instrument?

April 19, 2024
Our VNA software application offers a demo mode feature, which does not require a physical VNA to use. Demo mode is easy to access and allows you to simulate the use of various...

Introduction to Copper Mountain Technologies' Multiport VNA

April 19, 2024
Modern RF applications are constantly evolving and demand increasingly sophisticated test instrumentation, perfect for a multiport VNA.

Automating Vector Network Analyzer Measurements

April 19, 2024
Copper Mountain Technology VNAs can be automated by using either of two interfaces: a COM (also known as ActiveX) interface, or a TCP (Transmission Control Protocol) socket interface...