CSR Demonstrates Breakthrough Indoor Navigation Accuracy at Mobile World Congress 2012

SiRFstarV™ and SiRFusion™ platform “Fuse” Multiple Radio Signals, MEMS Sensor Inputs and Other Location Data

BARCELONA, Spain — (BUSINESS WIRE) — February 26, 2012 — CSR plc (LSE: CSR; NASDAQ: CSRE) is demonstrating one of the industry’s most exciting technological advancements at Mobile World Congress 2012 – highly accurate indoor navigation, made possible by the revolutionary SiRFstarV architecture and SiRFusion location platform. Using a smartphone containing a pre-production SiRFstarV device and MEMS sensors from STMicroelectronics, CSR and STMicroelectronics will show attendees how this breakthrough self-learning SiRFusion platform “fuses” multiple radio signals, sensor inputs and other location data to make extremely reliable and accurate indoor location and navigation a reality.

“Since we first demonstrated how our innovative MEMS sensors contribute to this unique CSR location technology and platform at CES 2012 in January, we have received inquiries from several of our Tier One customers expressing strong interest in this combined solution,” said Fabio Pasolini, Motion MEMS Division General Manager at STMicroelectronics. “We are thrilled to be contributing to this exciting live demonstration of a true indoor location and navigation solution that can address the emerging needs of location-enabled applications.”

The STMicroelectronics MEMS sensor module used in the demonstration, is a multi-sensor inertial measurement unit with ten degrees of freedom that combines 3-axis sensing of linear, angular and magnetic motion with pressure readings, which are used to determine elevations, so as to determine the position in multi-story buildings.

“Reliable pedestrian dead-reckoning, which is provided in collaboration with the STMicroelectronics MEMS sensors in this demo, is a critical component that enables our SiRFusion platform to achieve the required order of accuracy when GNSS signals are not available, such as indoors and in urban canyons,” said Kanwar Chadha, Chief Marketing Officer for CSR and founder of SiRF. “Today we are providing a glimpse of the future of indoor location and navigation, and demonstrating our vision of enhancing the mainstream consumer experience with a variety of location-enabled services and applications indoors and outdoors, seamlessly.”

The SiRFstarV architecture introduces a new approach to location and navigation. Instead of relying solely on GPS to determine position, the SiRFstarV architecture gathers real-time information from GPS, Galileo, Glonass and Compass satellites, multiple radio systems, such as Wi-Fi and cellular, and multiple MEMS sensors, like accelerometers, gyros and compasses. It then combines this real-time information with ephemeris data, mapping, cellular base station and Wi-Fi access point location data and other cloud-based aiding information using the SiRFusion platform.

To show the power of SiRFusion indoor navigation, a mobile handset containing SiRFstarV and STMicroelectronics MEMS sensors is loaded with indoor applications from Whatamap.com and VisioGlobe®. These applications show indoor positioning, search, and walking directions using high quality indoor maps from Navteq® and Micello.

Live demonstrations of the SiRFusion mobile handset will be shown in the CSR booth (Hall 4, Level 0, Booth HS27) and STMicroelectronics booth (Hall 7 booth 7C18) during Mobile World Congress 2012 in Barcelona, Spain. To book a meeting or demonstration please email Email Contact

About CSR

CSR is a global provider of innovative silicon and software solutions for the location-aware, media-rich, cloud-connected world. Our platforms are optimised for the automotive navigation and infotainment, digital cameras and imaging, connected home infotainment and wireless audio markets. We provide solutions to complex problems in the audio-visual, connectivity and location technology domains across a broad range of markets, with a technology portfolio that includes GPS/GNSS systems, Bluetooth®, Wi-Fi®, FM, NFC, aptXTM and CVCTM audio codecs, JPEG, MPEG, H.264 imaging, IPS printing, microcontrollers, DSPs and broadband receivers. CSR's technology solutions and market platforms enable its customers to deliver a superior user experience and are adopted by leaders in the auto, computer, home and mobile markets. More information can be found at www.csr.com. Keep up to date with CSR on our blog, or follow us on Twitter at twitter.com/CSR_plc.

About STMicroelectronics

ST is a global leader in the semiconductor market serving customers across the spectrum of sense and power technologies and multimedia convergence applications. From energy management and savings to trust and data security, from healthcare and wellness to smart consumer devices, in the home, car and office, at work and at play, ST is found everywhere microelectronics make a positive and innovative contribution to people's life. By getting more from technology to get more from life, ST stands for life.augmented. In 2011, the Company’s net revenues were $9.73 billion. Further information on ST can be found at www.st.com.

CAUTIONARY NOTE ON FORWARD LOOKING STATEMENTS

This press release contains certain statements (including statements concerning plans and objectives of management for future operations or performance, or assumptions related thereto) that are not historical facts and constitute ‘forward looking statements’ within the meaning of the United States Private Securities Litigation Reform Act of 1995 in relation to CSR's indoor navigation platforms and technology solutions, and their performance characteristics in customers' products, and other future events and their potential effects on CSR. These forward-looking statements can be identified by words such as ’will,’ ‘can deliver,’ offers', allows, 'to enhance,’ ‘enables,’ and other similar expressions regarding the performance characteristics of CSR's indoor navigation platforms and technology solutions, and their performance characteristics in consumer electronics products, and their potential effects on CSR. Any future release of CSR's indoor navigation platforms and technology solutions or consumer electronics products containing such technology, related products or modifications to such products’ capability, functionality or features are subject to ongoing evaluation by CSR and its customers, and may or may not be implemented and should not be considered firm commitments by CSR or its customers and should not be relied upon in making purchasing decisions. Such forward-looking statements represent the current expectations and beliefs of management of CSR, and are based upon numerous assumptions regarding CSR’s business strategies and the environment in which CSR will operate and therefore involve a number of known and unknown risks, contingencies, uncertainties and other factors, many of which are beyond the control of CSR, including, but not limited to, those detailed from time to time in CSR’s periodic reports (whether under the caption Risk Factors or Forward Looking Statements or elsewhere), which are available at the SEC’s web site http://www.sec.gov . Each forward looking statement speaks only as of the date hereof. CSR does not undertake to release publicly any updates or revisions to any forward looking statements contained herein, otherwise than required by law.

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