Continuing to expand its portfolio for the home theater market,Texas Instruments Inc. has announced two new high-performance audio digital signal processors (DSPs), the TMS320DA707 and TMS320DA705. They provide a cost-optimized platform that offers more features and high-quality sound to low- and mid-range applications requiring multi-channel decoding.  Such applications include audio/video (A/V) and DVD receivers, home-theater-in-a-box systems (HTIBs), set-top boxes, mini-components, high-definition televisions (HDTV) and automotive multimedia systems.

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Built on its Aureus product line, the new DA705 and DA707 DSPs come with an optimized software solution of decoders, post-processors and a system framework.  The performance audio software solution for the DA705 includes certified decoders (Dolby Digital EX, DTS-ES 96/24, AAC) and post processors (Dolby Pro Logic IIx, DTS NEO:6, Bass Management), as well as TI value-added post processing products such as TI Room Simulators, TI Graphic EQ and TI Matrix Processor.  The DA705 is aimed at  high volume consumer electronics because of its cost-effective price point and optimized software solution that runs without external SDRAM.  With this device, TI said, OEMs can bring entry level audio systems with high-end features, such as DTS 96/24 decoding with 96 kHz post-processing, ten-band graphic equalizer, 18 preset surround modes and 7.1 channel output.  Dolby Pro Logic IIx capability, a feature included on the most sophisticated A/V receivers and processors, provides OEMs the flexibility to decode native stereo or 5.1 audio into a 6.1 or 7.1-channel surround listening experience.

The new DA707 DSP natively supports off-chip SDRAM memory, enabling further customization and differentiation in the manufacturer’s applications.  The modularity of TI’s performance audio framework enables OEMs to easily plug in differentiating post-processing modules from TI, such as TI Virtual Sound (surround sound from two speakers), TI Bass Boost (extended bass response) and TI Perfect Playback (compressed audio enhancement); from Aureus-supported third parties, such as Audyssey Labs, Neural Surround and Dolby Laboratories; or from their own intellectual property.

The new DA707 and DA705 DSPs are not only software compatible with the other DA7xx and previous generation DA6xx devices, they are also pin compatible with the high performance DA708.  Thus, allowing OEMs to introduce a family of end equipments with a single hardware design, using a DA708 for the high performance products and a DA707 or DA705 for the lower-cost derivatives.  The three pin-compatible DSPs were designed such that a system with a DSP, SDRAM, parallel flash and multi-channel audio inputs and outputs could be designed on a two-layer board, resulting in a manufacturing cost savings compared to a multi-layer design.  The result of the pin-compatible family and intelligent chip design is lower development cost, lower manufacturing cost and faster time to market.

The TMS320DA705 and TMS320DA707 DSPs are currently in volume production.  Both devices are 250 MHz and come in a 144-pin TQFP package.  The DA705 costs $9.23 each in quantities of 10,000 units or more and the DA707 costs $11.33 each in quantities of 10,000 units or more.  The entire Aureus generation of digital audio processors is qualified to the Q100 automotive standard, according to TI..
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