Tensilica’s MPEG-2/4 AAC LC Decoders

The MPEG-2/4 AAC LC Decoder packagse for the Xtensa HiFi 2 Audio Engine implements 24-bit MPEG-2/4 AAC decoding compliant with ISO/IEC 14496-3 supporting MPEG-2/4 AAC LC stereo files as well as the decoding of ADIF, ADTS, MPEG-2 and MPEG-4 file format data streams.

The decoders are fixed-point implementations written in C and available in either object or source code. Included documentation describes how to incorporate the decoder into a system. Using this package, system developers can integrate an MPEG-2/4 AAC LC decoder into an SOC without the need for additional optimizations or software development. The same Xtensa HiFi 2 Audio Engine is used for other Tensilica audio codecs, enabling the development of highly optimized multi-standard audio SOC designs.

Feature Summary

• Fully compliant with ISO/IEC 11496-3 compliance testing
• Two versions: one for stereo and one for multichannel decoding up to 7.1 channels
• Supports decoding of:
• MPEG-2/4 AAC LC files
• ADIF, ADTS, MPEG-2 and MPEG-4 file format data streams

Specifications - Stereo - 128 kbps, 44.1 KHz, no LOAS support

Specifications - 7.1 channels - 576 kbps, 48 KHz, no LOAS support

* Average MHz required for single-cycle memory.
**Total RAM includes persistent, stack and scratch.