DSP touts 150 MIPS at 150 MHz clock frequency for audio apps - Embedded.com

DSP touts 150 MIPS at 150 MHz clock frequency for audio apps

Austin, Tex. — Freescale Semiconductor says its new DSP56374 combines digital signal processor performance and a low price point for audio applications that require small board space.

The DSP56374, based on the company's Onyx core, boasts 150 MIPS at 150 MHz clock frequency. Packed into the chip are 18K x 24 RAM, 28K x 24 ROM, 24-bit MAC with a 56-bit accumulator with capabilities for double precision modes when necessary. There is also a six -channel DMA controller, triple timer, dual enhanced serial audio interface and a built-in oscillator circuit.

The new unit is code-compatible with Freescale's 56000 and 56300 DSP families, which greatly reduces new product design time by enabling code reuse, according to the company.

In the car, the DSP56374 offers sound equalization and audio delays to provide “smart” audio that tailors sound based on where vehicle occupants are sitting or by specific car model. This same device extends high-quality sound to “home theatre in a box,” DVD and shelf systems, as well as next-generation television platforms. The DSP56374 occupies a small footprint, critical for these audio applications, in which space is at a premium.

“Once again, good things come in small packages. The DSP56374 delivers more speed, memory, comprehensive peripherals and signal processing capability than you would expect at this price point,” said Bill Pfaff, vice president and general manager of Freescale's Digital Audio, Radio and Telematics business.

The DSP56374 is a consumer-qualified device, with plans for full AEC automotive qualification in 2005. The DSP56374 can perform various audio equalizing algorithms, compression, speaker compensation, tone control, fade and balance functions, as well as audio sound-field processing algorithms via built-in software in the ROM developed by Freescale using the widely adopted plug-and-play software architecture. Matrix decoders such as Dolby Pro-Logic IIx and DTS Neo:6 are available on certain ROM versions of the parts. Customers are also able to develop their own software by downloading software to the on-board RAM.

The DSP56374 is now available in production quantities. Suggested resale pricing for the DSPB56374AF in an 80-pin TQFP package qualified for temperature ranges of 0 C to 70 C is $4.73 (USD) in 10,000-piece quantities, $4.24 (USD) in 50,000-piece quantities.

The suggested retail price for the DSPB56374AE in a 52-pin TQFP package qualified for temperature ranges of 0 C to 70 C is $4.53 (USD) in 10,000-piece quantities, $3.99 (USD) in 50,000-piece quantities.

The available DSP56374 daughter card will operate in the existing DSPAUDIOEVMMB1 evaluation module, part number DSPB374DB1. Freescale and other third-parties offer software and hardware tools. For more information about these products and services and other support available, visit www.freescale DSP offerings.

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