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buffer alignment requirement of the edma3 transfers

Hi all,

i want to know the alignment requirement of the dma buffers for the edma3 transfers i have read in the docs that for const  addressing mode the alignment requirement is 256 bytes but nothing was specified for the normal transfers. i am using the fastcopy example code given along with the framework components 2 , in this 1 i have observed that the alignment is always of 4 byte or higher is there a reason for it or is it just an coincidence can any 1 plz tell what is the alignment requirement for the buffers from where i have to transfer data using edma3

thanks ,

manoj