CHAPTER 6 DMA FUNCTIONS (DMA CONTROLLER)
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User’s Manual U15195EJ5V0UD
6.10 Forcible Suspension
DMA transfer can be forcibly suspended by NMI input during DMA transfer.
At such a time, the DMAC resets the Enn bit of the DCHCn register of all channels to 0 and the DMA transfer
disabled state is entered. An NMI request can then be acknowledged after the DMA transfer executed during NMI
input is terminated (n = 0 to 3).
Initialize the DMA transfer that has been forcibly suspended by setting the INITn bit of the DCHCn register to 1 to
forcibly terminate DMA transfer.
6.11 DMA Transfer End
When DMA transfer ends and the TCn bit of the DCHCn register is set to 1, a DMA transfer end interrupt
(INTDMAn) is issued to the interrupt controller (INTC) (n = 0 to 3).