D12320VF25IV Datasheet, PDF (335/1304 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 7 DMA Controller (Not Supported in the H8S/2321)
7.5.17 Clearing Full Address Mode
Figure 7.38 shows the procedure for releasing and initializing a channel designated for full address
mode. After full address mode has been cleared, the channel can be set to another transfer mode
using the appropriate setting procedure.
Clearing full
address mode
Stop the channel
Initialize DMACR
[1] Clear both the DTE bit and the DTME bit in
DMABCRL to 0; or wait until the transfer ends
and the DTE bit is cleared to 0, then clear the
DTME bit to 0.
Also clear the corresponding DTIE bit to 0 at the
[1]
same time.
[2] Clear all bits in DMACRA and DMACRB to 0.
[3] Clear the FAE bit in DMABCRH to 0.
[2]
Clear FAE bit to 0
[3]
Initialization;
operation halted
Figure 7.38 Example of Procedure for Clearing Full Address Mode
Rev.6.00 Sep. 27, 2007 Page 303 of 1268
REJ09B0220-0600