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hi,all 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. thank you! |
data_transfer in omap,which is best bettween dsp-dma-mmu and arm-mpui
Started by ●January 24, 2005
Reply by ●January 24, 20052005-01-24
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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 |
