What they don't teach you at school: When they say it's DMA compatible (2)
Not taught in school! A column introducing the specific operation of DMA transfer.
Using a USB controller as an example, I will explain the specific operation of DMA transfers. Let's consider a case where a write operation is performed on the built-in FIFO of a DMA slave-type USB controller using a general-purpose DMAC. Typically, the capacity of the FIFO built into a USB controller is not very large, generally accommodating only about two packets at most. *For detailed content of the column, you can view it from the related links. Please feel free to contact us for more information.*
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