Arbitrating and servicing polychronous data requests in direct memory access

摘要: Systems for servicing the data and memory requirements of system devices. A DMA engine that includes a reservoir is provided manages arbitrates requests from An arbitration unit only allows eligible devices to make request in any given cycle ensure all will be serviced within programmable time period. The contains buffers each channel device. interface ensures sufficient present by making system's based on an analysis channel. Based this analysis, either made main memory, or waits until it evaluated again future. Each thereby guaranteed response time.