Description

The AS3532 is a high definition audio player at ultra low power consumption for new generation music phones. The music player subsystem core is based on a new 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, like MP3, WMA and AAC for the least amount of power consumption with 0 (zero) CPU load.

The Audio Post-Processor implements an Asynchronous Sample Rate Converter (ASRC) with near transparent quality, multi-channel mixer with limiting function, 10 Bands Graphics Equalizer and it supports 192KHz sample rates at 24 Bits 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 utilized as multi-channel audio outputs.

The AS3532 audio subsystem includes a stereo PDM digital microphone input therefore completing all the audio requirements for new generation Mobile Phones.

Interfaces included in the AS3532 can support either Peer Mode to a Baseband Phone IC or "Black Box" companion Music Sub-system. In the later case it provides direct support for latest generation removable and embedded Flash Memory types with 4/8/16-Bit hardware ECC for MLC NAND Flashes, for iNAND, LBA NAND, moviNAND, oneNAND and removable card formats like SD2.0, MMC+, CE-ATA, MS PRO, CF. The mobile phone

The AS3532 is complemented by a comprehensive software suite that has matured over three generation of products delivered in the Multimedia Player market. The on chip 512Kbytes buffer memory allows single chip support of all key audio formats, compressed, lossless and high definition, polyphonic sequenced content, wavetable synthesizer, 3D positional sound, virtualizer engines and other digital audio effects. The SDK has passed the stringent test criteria of the Certified for Windows Vista program for downloadable DRM protected content.