关键词: Cache, 可重构, 低功耗

Abstract: Caches compose larger and larger proportion in the power consumption of the embedded processors.In order to decrease the power of the unified cache，a Program Phase Based Reconfiguration Algorithm（PPBRA） and a new reconfigurable unified cache structure based on classification access are presented.The scheme can automatically，transparently，and dynamically manage the reconfigurable unified cache on a per-phase and it also can access the unified cache with classification，so it can avoid accessing the unnecessary ways，save the energy consumption.Mibench simulation results show that it decreases the average energy consumption and improves the comprehensive performance compared with the conventional unified cache.

Key words: Cache, reconfigurable, low-power