HD64F3048F16 Datasheet, PDF (258/903 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 8 DMA Controller
Figure 8.7 shows a sample setup procedure for repeat mode.
Repeat mode
1. Set the source and destination addresses in MAR
and IOAR. The transfer direction is determined
automatically from the activation source.
Set source and
destination addresses
1
2. Set the transfer count in both ETCRH and ETCRL.
3. Read DTCR while the DTE bit is cleared to 0.
4. Set the DTCR bits as follows.
• Select the DMAC activation source with bits
DTS2 to DTS0.
Set transfer count
2
• Clear the DTIE bit to 0 and set the RPE bit to 1
to select repeat mode.
• Select MAR increment or decrement with the
DTID bit.
• Select byte size or word size with the DTSZ bit.
Read DTCR
3
• Set the DTE bit to 1 to enable the transfer.
Set DTCR
4
Repeat mode
Figure 8.7 Repeat Mode Setup Procedure (Example)
Rev. 3.00 Sep 27, 2006 page 230 of 872
REJ09B0325-0300