******* Description ***********
DCACHE_INVALIDATE_ENA | The bit is used to enable invalidate operation. It will be cleared by hardware after invalidate operation done. |
DCACHE_WRITEBACK_ENA | The bit is used to enable writeback operation. It will be cleared by hardware after writeback operation done. |
DCACHE_CLEAN_ENA | The bit is used to enable clean operation. It will be cleared by hardware after clean operation done. |
DCACHE_SYNC_DONE | The bit is used to indicate clean/writeback/invalidate operation is finished. |