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This latest general-purpose, 6-channel, 20-bit, 96 kHz, full-duplex codec offers a high signal-to-noise ratio in excess of 90 dB with low distortion. The STAC9758 offers for the first time a Universal Jacks(tm) capability to allow for reconfiguration of the various audio connector functions. The Universal Jacks reconfiguration is the next major step beyond SigmaTel's lead in Jack-Sensing capability, allowing detection of connected audio devices using proprietary on-chip circuitry.

Universal Jacks(tm) allows the codec to detect the type of audio device (microphone, headphone, powered speaker, etc.) that is plugged in to a particular jack, and then configure automatically that jack to match the device. Contrast this to existing audio designs, where each jack has a dedicated function, and only services a particular type of audio device. It is quite easy to become confused when setting up the traditional PC since the same connector type is used for each function, making it very easy to inadvertently connect an audio device to the wrong jack.

Universal Jacks, developed based on Intel audio initiatives and feedback from both Microsoft and tier one PC makers, provides auto-detection and configuration of audio jacks. One of the most frequently reported tech support calls from consumers results from unknowingly plugging a cord into the wrong audio jack. For example, with a system using the STAC9758, a speaker that is accidentally plugged into the microphone jack would trigger the codec to automatically reconfigure, allowing the speaker to work regardless of where it is plugged in. By enabling this functionality there is both a direct cost savings to PC makers because of reduced tech support calls and a benefit to the consumer from an ease-of-use standpoint. PC makers can save an estimated forty cents per system if this class of technical support call can be eliminated using Universal Jacks.

With the prevalence of digital audio and DVD movie playback on the PC, the need for higher quality, 6-channel audio has become increasingly relevant. The STAC9758 also contains new features such as SPDIF_IN and SPDIF_OUT, enabling connections to other consumer electronics throughout the home. In addition to SPDIF output at 48 kHz or 96 kHz sample rates, the STAC9758 supports ADAT® Optical "Lightpipe," a common multi-channel format in the pro-audio industry used for royalty-free transmission of 8 channels of 20-bit or 24-bit, 48 kHz uncompressed digital audio over a single standard Toslink optical cable.

"This latest product is built on an established foundation of quality and technological excellence in the audio codec market," says Alan Hansford, vice president of marketing at SigmaTel. "Having developing solid relationships with software and hardware makers, SigmaTel developed our Universal Jacks products based on direct feedback from those who are on the front line with the consumer."

The STAC9759 is also now available, designed with the same feature set as the STAC9758. Where the STAC9758 is designed for 5-volt analog systems, the STAC9759 is for 3.3-volt analog systems.

About C-Major:

C-Major(tm) audio codec solutions provide the best sounding audio for PCs and digital home entertainment systems. These solutions are built on the foundation of SigmaTel's mixed-signal technical expertise, with a reputation as the market leader in high-quality audio codecs. C-Major offers a wide variety of features for different levels of audio quality, with integrated technologies and software solutions that enable the highest performance at the lowest cost. Also, through SigmaTel's integrated audio software technologies, these solutions are certified for most operating systems, including Microsoft® Windows®. With a C-Major solution, digital audio can rise to the level of a real world experience.

About SigmaTel®:

SigmaTel, a provider of integrated circuit (IC) design, is converting the real world into a digital experience with its innovative mixed-signal solutions for the digital audio and wireless infrared markets. Since its inception, SigmaTel has built a strong reputation as an innovative developer of mixed-signal ICs, by being first to market with several highly integrated designs. The privately held company, based in Austin, Texas, is committed to providing customers with high-performance products along with superior customer service. For more information, visit SigmaTel's Web site at www.sigmatel.com.

Contact:

     SigmaTel
     Press Contact:
     Nate Long, 512/381-3913
     nlong@sigmatel.com
     or
     Company Contact:
     Alan Hansford, 512/381-3716
     ahansford@sigmatel.com