Single chip DAB baseband processor from LSI Logic and Bosch.

Single chip DAB baseband processor from LSI Logic and Bosch.
Steve Bush
LSI Logic and Bosch have jointly developed a single-chip digital audio broadcast (DAB) baseband processor. “Until now people have used multiple DSPs or custom chipsets with five or six chips,” said Mike Casey, LSI’s marketing director for wireless and mobile products.
The chip uses a 32-bit MIPS miniRISC as a control processor and a 16-bit fixed point Oak DSP for number crunching. “Bosch supplied the system specification and we implemented hardware to meet this using our CoreWare design programme,” said Casey.
Casey makes the point that the chip can decode more than just one audio stream: “It can handle an entire 1.6Mbit/s DAB ensemble. This could be a few high quality stereo channels or many speech channels, even MPEG-1 video over DAB. I am not aware of anyone else that can do this in a single-chip.”
Hitachi announced a single-chip baseband processor for DAB based on its SH-DSP last year


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