Low-power reconfigurable audio processor for mobile devices

摘要

Low-power processing of multimedia data is mandatory for the recent mobile devices. In this paper, we present coarse-grained reconfigurable processor for low-power audio processing. By utilizing perfect instruction cache and tightly-coupled scratchpad memory, we can eliminate all the bandwidth consumption caused by external memory access while decoding compressed audio data. Acceleration of audio data processing based on software pipelining technique also helps to reduce power consumption by decreasing overall processing time. Presented audio processor is integrated into commercial application processors and shipped with market-leading mobile devices, providing over 100 hours of audio playback.