CSR To Bring Its Experience To WiMedia Advisory Board; Wireless Leader Helps Shape the Future For UWB

Business Wire, May 17, 2006

CAMBRIDGE, England -- CSR plc (LSE:CSR):

-- Ref: EMQ1441

CSR plc today announced it has been appointed to the WiMedia Alliance Advisory Board. In this capacity, Kristine Overlaur, CSR's Technical Marketing Manager for North America will attend the WiMedia Alliance Board of Directors (BoD) meetings, and bring to the table the company's experience to contribute to the evolution of the WiMedia Ultra-Wideband (UWB) technology. The appointment is effective immediately and recognises CSR's significant contributions to and support for the WiMedia UWB common radio platform. In March 2006, the Bluetooth SIG formally selected WiMedia's MB-OFDM-based platform for high-speed Bluetooth applications, one month after CSR publicly announced its alignment with this platform. CSR has given the name Ultra Wide Bluetooth to the combination of UWB and Bluetooth.

"The WiMedia UWB common radio platform will form the basis for a future version of the Bluetooth specification that is set to offer ultra-fast data transfer rates of up to 480Mbps," noted Eric Janson, senior VP sales and marketing for CSR. "The aims of the WiMedia Alliance of creating a fully interoperable, standardised UWB technology align perfectly with the challenges that Bluetooth has successfully overcome. By combining WiMedia UWB technology with the concrete foundations of the Bluetooth standard, UWB will be able to see faster integration into more products and drive consumer adoption for the technology."

"We believe that CSR's experience that has been cultivated in the development of Bluetooth products will be a solid addition to WiMedia's depth of expertise," commented Stephen R. Wood, president of the WiMedia Alliance. "We look forward to working with them as part of our efforts to integrate the Bluetooth work into WiMedia's common radio platform."

About CSR

CSR is the leading global provider of Bluetooth technology and has developed expertise in other single-chip wireless communication standards such as Wi-Fi (IEEE802.11). CSR offers developed hardware/software solutions for Bluetooth based around BlueCore, a fully integrated 2.4 GHz radio, baseband, microcontroller and software.

CSR has now launched its fifth generation BlueCore suite and is in volume manufacture of its fourth generation BlueCore devices. BlueCore4 supports the Enhanced Data Rate (EDR) standard which was ratified at the end of 2004. BlueCore4 remains the only EDR silicon to be shipping in volume today. In November 2004 CSR launched UniFi, the first single chip 802.11a/b/g embedded solution specifically targeting the mobile phone and consumer electronics markets.

BlueCore features in over 50 per cent of all Bluetooth devices shipped and over 60 per cent of all qualified Bluetooth enabled products and modules listed on the Bluetooth website with industry leaders including Nokia, Dell, Panasonic, Samsung, Sharp, Motorola, IBM, Apple, LG, NEC, Toshiba, RIM and Sony using BlueCore devices in their range of Bluetooth products.

In March 2005, CSR acquired Clarity Technologies Inc., for its Clear Voice Capture (CVC) technology that enhances the audio performance of any voice-based product or system. Applications for CVC include wireless headsets, handsets and automotive hands free systems.

In August 2005, CSR completed the acquisition of UbiNetics' software business, providing a strong R&D team to accelerate its existing software development in Bluetooth, Wi-Fi and UWB. The UbiNetics team gives CSR the capacity to extend its offering to mobile handset customers.

CSR has its headquarters and offices in Cambridge, UK, and offices in Japan, Korea, Taiwan, China, India, France, Denmark, Sweden and both Texas and Detroit in the USA.

More information can be found at www.csr.com and the partner web site www.btdesigner.com

More information about Bluetooth technology can be found on the SIG web site at www.bluetooth.com