英语翻译

英语翻译
DMA priority levelEach DMA channel can be independently assigned high priority or low priority relative to each other.MultipleDMA channels that are assigned to the same priority level are handled in a round-robin manner.DMA source/destination address modificationThe DMA provides flexible address-indexing modes for easy implementation of data management schemessuch as autobuffering and circular buffers.Source and destination addresses can be indexed separately andcan be post-incremented,post-decremented,or post-incremented with a specified index offset.DMA in autoinitialization modeThe DMA can automatically reinitialize itself after completion of a block transfer.Some of the DMA registers canbe preloaded for the next block transfer through the DMA global reload registers (DMGSA,DMGDA,andDMGCR).Autoinitialization allows: Continuous operation:Normally,the CPU would have to reinitialize the DMA immediately after thecompletion of the current block transfer; but with the global reload registers,it can reinitialize these valuesfor the next block transfer any time after the current block transfer begins. Repetitive operation:The CPU does not preload the global reload register with new values for each blocktransfer but only loads them on the first block transfer.