CSR Incorporates Bluetooth Specification Version 1.2 in BlueCore3

12/10/2003 - CSR (Cambridge Silicon Radio) announced that its BlueCore3 silicon incorporates all of the new features included in Bluetooth Specification Version 1.2 (v1.2) of the specification that was adopted by the Bluetooth SIG on November 5th 2003. The specification includes many enhancements over v1.1, including support for eSCO (extended Synchronous Connection Oriented), adaptive frequency hopping (AFH) and Fast Connect. BlueCore3 also includes all the optional controller features of the new standard and improves co-existence with other 2.4GHz radios making it ideal for use in a wide range of Bluetooth applications.

eSCO channels are error checking voice channels that allow the retransmission of corrupted voice data. As data rates can be negotiated via eSCO, the overall high quality-of-service connection is improved. With eSCO in place in BlueCore3, the detection and re-transmission of lost or destroyed voice packets allows minimum impact on real-time performance, thus making it particularly suitable for high quality voice transmission.

Over the last two years, CSR has been central to the development of AFH, a feature now integrated into Bluetooth v1.2. AFH coordinates the frequency used by Bluetooth and other 2.4GHz radio devices such as WiFi, to reduce the likelihood of interference. This makes CSR's BlueCore3 even more suitable for a number of combo designs where WiFi and Bluetooth are required to work together.

Fast Connect significantly improves the usability of Bluetooth devices for the user by allowing connection times to be reduced by an order of magnitude.

Robin Heydon, Technical Consultant, CSR and member of the Bluetooth Architectural Review Body commented, "We have worked closely with the SIG since Bluetooth's inception. Our experience within the Bluetooth silicon sector gives us a key role within the SIG, so that we can be instrumental in developing new standards such as AFH."

Heydon continued, "For the user, the essential improvements of version 1.2 of the specification makes Bluetooth faster, with improved connection times, and stronger, with more robust data and voice connections."

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