Bluetooth gets DSP backup
By Nicholas Cravotta -- EDN, September 18, 2003
Cambridge Silicon Radio has launched its BlueCore3 Bluetooth family, supporting Version 1.2 of the Bluetooth specification, including all optional features of the standard. The Blue-Core3-Multimedia has an integrated programmable DSP supporting enhanced audio and echo cancellation for applications such as wireless stereo headphones. The device includes a 16-bit stereo codec with a dual ADC/DAC for stereo output and integrated amplifiers for driving a microphone and speakers.
The BlueCore3-ROM targets low-cost, high-volume applications, such as Bluetooth-enabled cell phones. New built-in self-test routines speed production testing. The BlueCore family also supports the ability to adapt the page-scan interval of Bluetooth to that of mobile phones, thus increasing the battery life of such devices (Picture).
Currently available, the BlueCore3-Multimedia comes in a 10×10-mm, 96-ball LFBGA package and sells for $8 (one) in sample quantities. The BlueCore3-ROM is available in chip-scale, 4×4-mm; BGA; and RF Plug and Go packaging, which integrates matching circuitry so that you can directly connect an antenna to the device. It costs less than $5 (production volumes).
Cambridge Silicon Radio, 1-972-238-2300, www.csr.com.
