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DMA overhead

Question asked by Cecilia C on Dec 5, 2017
Latest reply on Dec 5, 2017 by Peter Vlna

Hi, I have alot of data that I want to transfer from the eTPU via DMA (using MPC5746R). Which alternative is better performance wise: calling the DMARequest for every new data (each 50us) or buffering the data in the eTPU and transferring it in bigger chunks? Is there any overhead in calling the DMARequest more often?