High definition audio player IC

19 March 2008 Analogue, Mixed Signal, LSI

austriamicrosystems has announced the release of the first member of a new family of media player ICs based on innovative intellectual property aimed at bridging the gap between the audio experience of music phones and hi-fi home audio devices.

The AS3532 is a music player subsystem whose core is based on a newly developed audio engine and audio post-processor which act as co-processors to an ARM central programmable unit. The audio engine, in a fully hardwired context, executes the decompression and playback of most popular compressed audio formats such as MP3, WMA and AAC, for very low power consumption with zero CPU load.

The audio post-processor implements an asynchronous sample rate converter (ASRC) with near-transparent quality, a multichannel mixer with limiting function and a 10-band graphics equaliser, and supports 192 kHz sample rates at 24-bit dynamic range for high definition audio processing. Three sets of I²S outputs can independently control stereo speakers, subwoofer and headphone or line outputs; these can also be utilised as multichannel audio outputs. The AS3532 audio subsystem additionally includes a stereo PDM digital microphone input, thereby completing all audio requirements for new generation mobile phones.

Interfaces included in the AS3532 can support either peer mode to a baseband phone IC or a 'Black Box' companion music sub-system. In the latter case, the IC provides direct support for latest generation removable and embedded Flash memory types with 4/8/16-bit hardware ECC, for MLC NAND Flash, iNAND, LBA NAND, moviNAND, oneNAND and removable card formats like SD2.0, MMC+, CE-ATA, MS PRO and CF.

An on-chip 512 KB buffer memory allows single chip support of all key audio formats, compressed, lossless and high definition, polyphonic sequenced content, wavetable synthesiser, 3D positional sound, virtualiser engines and other digital audio effects. The AS3532 is complemented by a comprehensive software suite that has matured over three generations of products delivered in the multimedia player market. The SDK has passed the stringent test criteria of the 'Certified for Windows Vista' program for downloadable content.

For more information contact ASIC Design Services, +27 (0)11 315 8316, [email protected], www.asic.co.za, NuVision Electronics, +27 (0)11 894 8214, [email protected], www.nuvisionelec.co.za

Credit(s)

ASIC Design Services NuVision Electronics

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