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DMA Access/Conflict Question (TMS320F28335)

Ed Hildebrandt
Expert 1035 points
Other Parts Discussed in Thread: TMS320F28335

I have a question on the DMA Access on the TMS320F28335.  I want to confirm that If I have the DMA writing to one of the memory interfaces, the CPU can access all the other interfaces at the same time, the only time there would be a conflict is if you try and access the same memory interface from both the CPU and the DMA.  For example if I use the L7 RAM for DMA acceess, the L4, L5 and L6 RAM as well as the external RAM can be accessed by the CPU without risk of confilct. 

Can someone please confirm that this is correct?

Thanks
Ed

  • 0
    TI__Guru** 113915 points

    Hi Ed,

    Yes, CPU and DMA can access different RAMs at same time without conflict. So DMA can access L7 and same time CPU can access other RAMs without any issue.

    Regards,

    Vivek Singh