Clearing Peripheral Interrupts By Dma - Fujitsu FR60 Hardware Manual

CHAPTER 16 DMA CONTROLLER (DMAC)
16.3.12

Clearing Peripheral Interrupts by DMA

This DMA has a function that clears peripheral interrupts. This function works when
peripheral interrupt is selected as the DMA start source (when IS[4:0]=1xxxx).
Peripheral interrupts are cleared only for the set start sources. That is, only the
peripheral functions set by IS[4:0] are cleared.
■ Timing for Clearing Interrupts During DMA
The timing for clearing an interrupt depends on the transfer mode. (See Section "16.4
Flowcharts").
[Block/step transfer]
If block transfer is selected, a clear signal is generated after one block (step) transfer.
[Burst transfer]
If burst transfer is selected, a clear signal is generated after transfer is performed the specified number
of times.
[Demand transfer]
Since only start requests from external pins are supported in demand transfer, no clear signal is
generated.
510
Operation