HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 296

• Manufacturer Part Number: HD6412320
• Description: Renesas 16-Bit Single-Chip Microcomputer H8S Family H8S-2300 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 7 DMA Controller (Not Supported in the H8S/2321)
Figure 7.8 shows an example of the setting procedure for repeat mode.
Rev.6.00 Sep. 27, 2007 Page 266 of 1268
REJ09B0220-0600
and transfer destination
Set number of transfers
Repeat mode setting
Set transfer source
Read DMABCRL
Set DMABCRH
Set DMABCRL
Repeat mode
Set DMACR
addresses
Figure 7.8 Example of Repeat Mode Setting Procedure
[1]
[2]
[3]
[4]
[5]
[6]
[1] Set each bit in DMABCRH.
[2] Set the transfer source address and transfer
[3] Set the number of transfers in both ETCRH and
[4] Set each bit in DMACR.
[5] Read the DTE bit in DMABCRL as 0.
[6] Set each bit in DMABCRL.
• Set the DTE bit to 1 to enable transfer.
• Clear the FAE bit to 0 to select short address
• Specify enabling or disabling of internal
destination address in MAR and IOAR.
ETCRL.
• Set the transfer data size with the DTSZ bit.
• Specify whether MAR is to be incremented or
• Set the RPE bit to 1.
• Specify the transfer direction with the DTDIR
• Select the activation source with bits DTF3 to
• Clear the DTIE bit to 0.
mode.
interrupt clearing with the DTA bit.
decremented with the DTID bit.
bit.
DTF0.