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Garlor Dembed > when we transfer data from system memory to dsp sram. > which is the best choice for largest througout > (1)dsp initiate transfer, it use dma and its mmu to access system > memory. > (2)arm initiate transfer, it use dma and its mpui to access dsp > sram. Which core is busier? DMA cycles normally "steal" from CPU cycles -- or even block CPU mem cycles in some cases -- so I might guess whichever core has lower workload should handle DMA. -Jeff |