DUPLICATE SYNCHRONIZATION SYSTEM AND METHOD OF OPERATING DUPLICATE SYNCHRONIZATION SYSTEM

摘要

The duplicate synchronization system has: afirst system; and a second system operating insynchronization with the first system. The first andthe second systems are connected to each other. Thefirst system includes: a first memory; a first memorycontroller; and a first DMA engine. The secondsystem includes: a second memory; a second memorycontroller; and a second DMA engine. When sending aread command to the memory controller, each DMAengine can set a source of the read command to eitherthe first DMA engine or the second DMA engine. Thememory controller reads out data from the memory inresponse to the read command, and sends the read databack to the source indicated in the read command.