13.5.1.2 Transfer Size

Descriptor[17:16] contains the transfer size bits as follows. See section 14.11.2.1 for size conflict handling.

  • 11 = Reserved
  • 10 = One 32-bit word is transferred at a time
  • 01 = One 16-bit word is transferred at a time
  • 00 = One byte is transferred at a time

Note that SIZEn[1:0] overrules DMAxCH.SIZE[1:0] when its descriptor table is enabled.