Implementation and Optimization of DSP Suspend Resume on Dual-Core SOC

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Executive Summary

Energy consumption has become an increasingly design issue in multimedia mobile system. This paper presents a realization for suspend/resume on a dual-core SoC to conserve energy consumption while system is idle. A generic backup/restore mechanism is proposed for any DSP applications. Furthermore, optimization for latency targets on characteristic of H.264/AVC decoder is refined and only needs to backup 26 words for resume. Experimental results show optimization scheme can achieve 99% improvement in latency and the realization for suspend/resume can provide a valuable experience for similar designs.

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