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This paper describes implementation of DMA controller of AMBA Bus with two masters using VHDL. DMA controller is a synthesizable soft IP core connected to the AMBA AHB Bus for easy integration into SOC implementation. The Direct Memory Access (DMA) Controller is a hardware feature that enables movement of blocks of data from peripheral to memory, memory to peripheral or memory to memory. This movement of data by a separate entity significantly reduces the load on the processor. A DMA controller can be used to save power in a system by putting the CPU in a low power state and using the DMA controller (fewer gates/transactions) to move the data.
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