Abstract:

In view of the fact that DMA module can not read/write FPGA peripherals directly in SOPC solutions of Altera company,this paper puts forward the design of general DMA read/write control module based on the transmission mode of Avalon bus flow.The design of two custom peripherals makes it possible for DMA to access High-speed data of FPGA peripherals.It implements rapid transmission of bulk data between the Nios II and FPGA.The paper briefly introduces the Avalon-MM bus norms,and elaborates the design of system architecture and read controller of DMA.Finally the test results show that the solution is efficient and feasible.

Key words: SOPC;Nios II;DMA;avalon bus