austriamicrosystems has announced an additional member of its new family of media player ICs.
The AS3536 is a multimedia player system whose core is based on newly developed audio and video engines with post-processors acting as co-processors to an ARM central programmable unit capable of 400 MHz. The IC also includes system level power management, a high quality audio codec and battery charging.
The device’s power management system achieves only 120 mW system level battery consumption for DVD resolution movies and sub-15 mW for compressed audio. Its fully static design and low leakage technology allow for only 1,4 mW standby power or 4 mW while refreshing the display from the on-chip 512 KB buffer (with the screen backlight off). A lower cost variant, the AS3535, plays audio/video at up to WQVGA resolution with a system power of 60 mW.
The audio engine executes decompression and playback of most popular compressed audio formats, such as MP3, WMA and AAC, with no CPU load. The audio post-processor implements an asynchronous sample rate converter (ASRC) with near-transparent quality, a multi-channel mixer with limiting function and 10-band graphic 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 and may also be utilised as multichannel audio outputs. The AS3536 audio subsystem additionally includes a stereo PDM digital microphone input.
The fully hardware implemented video engine can decompress and play H.264/AVC, MPEG4, H.263, WMV9/VC-1 and Sorenson Spark multistandard video with resolution in excess of DVD players (D1 video). JPEG pictures are decompressed at 16 Mpixels/sec. WMV9 is supported so that storing DVD movies requires less than 1/6th of their original file sizes with equivalent quality. The video post-processor includes features like up/down video scaling, rotation, cropping, split screens, picture in picture and alpha blending for enhanced GUI effects.
The AS3536 directly interfaces to the latest generation removable and embedded Flash memory types with 4/8/16-bit hardware ECC, such as MLC NAND Flash, iNAND, LBA NAND, moviNAND, oneNAND and removable card formats like SD2.0, MMC+, CE-ATA, MS PRO and CF. The IC is complemented by a software suite which has passed the stringent test criteria of the Certified for Windows Vista programme for downloadable content.
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