HD6412320 RENESAS [Renesas Technology Corp], HD6412320 Datasheet - Page 299

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

Figure 7.10 shows an example of the setting procedure for single address mode (when sequential
mode is specified).
Set number of transfers
Set transfer source and
Single address mode
transfer destination
Read DMABCRL
Set DMABCRH
Single address
Set DMABCRL
mode setting
Set DMACR
addresses
Figure 7.10 Example of Single Address Mode Setting Procedure
(When Sequential Mode is Specified)
[1]
[2]
[3]
[4]
[5]
[6]
Section 7 DMA Controller (Not Supported in the H8S/2321)
[1] Set each bit in DMABCRH.
[2] Set the transfer source address/transfer
[3] Set the number of transfers in ETCR.
[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
• Set the SAE bit to 1 to select single address
• Specify enabling or disabling of internal
destination address in MAR.
• Set the transfer data size with the DTSZ bit.
• Specify whether MAR is to be incremented or
• Clear the RPE bit to 0 to select sequential
• Specify the transfer direction with the DTDIR
• Select the activation source with bits DTF3 to
• Specify enabling or disabling of transfer end
mode.
mode.
interrupt clearing with the DTA bit.
decremented with the DTID bit.
mode.
bit.
DTF0.
interrupts with the DTIE bit.
Rev.6.00 Sep. 27, 2007 Page 269 of 1268
REJ09B0220-0600