BlueCore5-Multimedia Ships in Volume to Customers.

Latest Generation of BlueCore Provides Unprecedented Wireless Music and Voice Quality

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

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CSR today announced that its BlueCore5-Multimedia silicon is now shipping in volume. BlueCore5-Multimedia is CSR's most advanced silicon offering best in class audio for applications including high-end stereo and mono headsets and its audio functionality can also now be expanded through CSR's partnerships with third party software developers via the company's eXtension Programme.

The CSR BlueCore5-Multimedia chip sets a number of new industry benchmarks. Along with its predecessor, BlueCore3-Multimedia, it is the only Bluetooth IC in the market that integrates a digital signal processor (DSP). The powerful 64 MIPS DSP in BlueCore5-Multimedia allows customers to add audio or voice enhancement software to boost the performance and functionality of their end-designs. CSR's eXtension Partner Programme delivers a wide range of third party software plug-ins for the on-chip DSP, which further reduces design cycle time.

BlueCore5-Multimedia offers superior sound quality for headset applications with a best-in-class signal to noise ratio of -95dB. BlueCore5-MM also leads the industry for power consumption and radio design. The radio transmits at +6.5dBm and receives at -90dBm which eliminates interference when listening to music or taking a call. When used in stereo headset applications, BlueCore5-Multimedia enables industry-leading battery life of more than 24 hours of music playback.

Richard Ord, SVP of the Wireless Audio Strategic Business Unit at CSR, commented, "BlueCore5-Multimedia has been specifically developed for mono and stereo Bluetooth headset applications and delivers the crystal clear voice and music quality consumers expect from high-end applications, while being cost competitive with lower quality products. The unprecedented combination of an on-chip DSP, superior audio quality, best-in-class battery life and lowest BOM cost promises to raise the standard of the Bluetooth headset market and further support consumer adoption of the technology."

To support customers designing in the BlueCore5-Multimedia into their products, CSR has also released its BlueTunes2 audio development kit, which offers complete hardware and software solutions for high-end mono and stereo headsets based on BlueCore5-Multimedia.

Ord continued, "By providing everything from the hardware and software stack to reference designs, pre-ported third party solutions and ongoing technical support, we have cemented our position as the Bluetooth supplier of choice. The BlueCore5-Multimedia further enhances this position, which is reflected by customers going into mass production with the chip in the first quarter of 2007"

About CSR

CSR is the leading global provider of personal wireless technology and its product portfolio covers Bluetooth, FM receivers and WiFi (IEEE802.11). CSR offers developed hardware/software solutions, based around its silicon platforms, that incorporate, fully integrated radio, baseband and microcontroller elements.

CSR's customers include industry leaders such as Apple, Dell, LG, Motorola, NEC, Nokia, Panasonic, RIM, Samsung, Sharp, Sony, TomTom and Toshiba.

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

More information can be found at www.csr.com