Audio Processor features multi-standard connectivity.
Press Release Summary:
Model STA331 is based on ARM7TDMI® core coupled with proprietary FFX digital modulation technology. Integrated Class D Codec and processing capability at up to 75 MHz allows integration into portable and stationary applications. Processor can drive audio power up to 100 W per channel when combined with digital power stage STA510F. It is available with embedded stereo A/D converter, bridge, and three-way input selector.
Original Press Release:
STMicroelectronics Adds Audio Processor with Highly-Efficient Audio Codec to All-Digital Sound Terminal(TM) Family
Flexible sound processor with embedded FFX technology supports high-quality consumer products, from portables to home systems, with multi-standard connectivity
Geneva, January 7, 2008 - STMicroelectronics (NYSE: STM), a world leader in the design and production of semiconductors for consumer applications, today announced a new audio processor - based on an ARM7TDMI® core coupled with ST's proprietary FFX (full flexible amplification) digital modulation technology.
The STA331 audio processor, with integrated, high-efficiency Class D Codec, offers a very high level of flexibility that enables it to be used across the full range of consumer audio products, from portable and wireless devices to home theatre and audio systems. The audio processor is a significant extension to ST's Sound Terminal(TM) family of high-quality single-chip audio solutions.
With its very low power consumption, excellent processing capability at up to 75MHz, and high audio quality, the STA331 can be used for both portable and stationary applications, with the same chip being used across a range of products such as set-top boxes (STBs), home audio systems, mini and micro component systems, and wireless speakers and headphones. When combined with the STA510F - a new digital power stage designed specifically for FFX drivers - the STA331 can drive audio power up to 100W per channel.
The STA331's analog and digital audio peripherals make it an ideal and flexible solution for mid-range sound-processing applications, where product differentiation is critical. The code runs from the embedded RAM, uploaded from external serial Flash memory, and the whole set of audio parameters and functions can be controlled via an I2C interface, or through a customizable GPIO interface for standalone operation. Moreover, the widely used ARM7TDMI core allows fast porting of the third-party audio effects that are available for ARM processors.
The STA331 embeds a stereo ADC (analog to digital converter), the FFX PWM (pulse width modulation) modulator, and a powerful bridge, in a single package, along with multi-standard digital connectivity and a three-way input selector. Full multiplexing of multiple audio sources is possible.
A complete library of algorithms has been developed to improve the listening experience of both musical and video content. The library includes digital audio processing, such as ST's proprietary Tones Control, WideSurround, StereoEnhancer, intelligent volume control (MDCR), enhanced listening modes (voice and midnight modes), noise reduction and echo cancellation, and loudspeaker and cabinet compensation EQ. Compressed audio algorithm decoders, in addition to common third-party algorithms, are available upon request.
"The STA331 is the most advanced implementation of the Sound Terminal concept so far," said Andrea Onetti, General Manager of ST's Audio Division. "FFX-based products already provide users with a seamless audio link from both analog and digital signals, and from different sources, including wireless and MEMS-based applications, to the loudspeaker. The addition of the ARM7 core in the STA331 means that ST is the first silicon manufacturer to offer a digital modulator flexible enough to be used across the whole range of consumer audio products."
The STA331 is available in volume now, in a TQFP package, priced at less than $3.50.
About STMicroelectronics
STMicroelectronics is a global leader in developing and delivering semiconductor solutions across the spectrum of microelectronics applications. An unrivalled combination of silicon and system expertise, manufacturing strength, Intellectual Property (IP) portfolio and strategic partners positions the Company at the forefront of System-on-Chip (SoC) technology and its products play a key role in enabling today's convergence markets.
The Company's shares are traded on the New York Stock Exchange, on Euronext Paris and on the Milan Stock Exchange. In 2006, the Company's net revenues were $9.85 billion and net earnings were $782 million. Further information on ST can be found at www.st.com.
STMicroelectronics, Inc.
Lexington Corporate Center
10 Maguire Road
Bldg. 1, 3rd Floor
Lexington, MA 02421
(781) 861 2650
www.st.com
