Geneva--Aug. 30, 1999--STMicroelectronics (Saint-Genis-Pouilly, Cedex) has delivered to customers fully functional samples of a new chipthat allows consumer electronics companies to develop car stereos in which all of the key functions areperformed digitally, replacing traditional analog solutions.
The new chip, called TDA7500, integrates two Digital Signal Processor (DSP) cores, and all of theother functions needed to interface the DSPs to the rest of the stereo, on a single piece of silicon. Thecompany expects that the product will ship in volume quantities in the fourth quarter of 1999.
Using only digital techniques, the TDA7500 performs all of the basic functions like AM/FM and stereodecoding, volume, tone and balance controls. In addition, it can implement optional features like graphicequalizers and concert hall effects to differentiate high end products and new features like echocancellation and noise reduction, which are useful in convergence products where a mobile phone isembedded in the stereo.
A programmable digital solution like the TDA7500 has many advantages over the conventional analogcar stereo. The most important is that new features can be added simply by changing the software. Thismakes it easier for manufacturers to differentiate their products and also reduces manufacturing costs asthe same hardware platform can be used for a whole range of radios with differing capabilities, reducingengineering cost and giving economy of scale. Another benefit is that performance is constant anduniform regardless of environmental conditions or variations in the characteristics of components.
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