3069RF-ZTAT Datasheet, PDF (266/1003 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER

7.4.12 Aborting a DMAC Transfer
When the DTE bit in an active channel is cleared to 0, the DMAC halts after transferring the
current byte or word. The DMAC starts again when the DTE bit is set to 1. In full address mode,
the DTME bit can be used for the same purpose. Figure 7.22 shows the procedure for aborting a
DMAC transfer by software.
DMAC transfer abort
Set DTCR
[1] Clear the DTE bit to 0 in DTCR.
To avoid generating an interrupt when
aborting a DMAC transfer, clear the DTIE
bit to 0 simultaneously.
[1]
DMAC transfer aborted
Figure 7.22 Procedure for Aborting a DMAC Transfer
Rev. 5.0, 09/04, page 244 of 978