External DMA modes

I am evaluating both the NET+50 and NS9750 for use in our product. The NET+50 documents seem to indicate that it is capable of external fly-by DMA. The NS9750 documents seem to indicate that it is only capable of memory to memory DMA. Are these statments correct? tia

I used NS9750 for SPI DMA transfers. So, it was SPI port to memory.