Hitachi H8S/2633 Hardware Manual page 313

Clearing Full Address Mode

Figure 8-38 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

Clear FAE bit to 0

Initialization;

operation halted

Figure 8-38 Example of Procedure for Clearing Full Address Mode

[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

[2] Clear all bits in DMACRA and DMACRB to 0.

[3] Clear the FAE bit in DMABCRH to 0.