A SERVICE OF

logo

Open as PDF
next previous
353
Chapter 26 DMA Controller
2.DMA Controller (DMAC) Registers
■ Pin Function of the DACK, and DEOP, and DREQ pins
To use the DACK, DEOP, or DREQ pins for external transfer, a switch must be made from the port function to the
DMA pin function.
To make the switch, set the PFR register.