HD6432670 Hitachi, HD6432670 Datasheet - Page 339

• Manufacturer Part Number: HD6432670
• Description: (HD64F267x Series) 16-Bit Microcomputer
• Manufacturer: Hitachi

7.5.5
Single address mode can only be specified for channel B. This mode can be specified by setting
the SAE bit in DMABCRH to 1 in short address mode.
and transfer destination
Set number of transfers
Repeat mode setting
Set transfer source
Single Address Mode
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.
Rev. 2.0, 04/02, page 293 of 906