H8SSLASH2218 datasheet(253/750 Pages) RENESAS

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H8S/2218 数据表(PDF) 253 Page - Renesas Technology Corp

部件名	H8S/2218

功能描述	16-Bit Single-Chip Microcomputer H8S Family/H8S/2200 Series

PDF	750 Pages

Scroll/Zoom	100%

制造商	RENESAS [Renesas Technology Corp]

网页	http://www.renesas.com

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253 / 750 page

Section 7 DMA Controller (DMAC)

Rev.6.00 Jun. 03, 2008 Page 205 of 698

REJ09B0074-0600

7.4.14

Clearing Full Address Mode

Figure 7.23 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

[1]

[2]

[3]

[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

same time.

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

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

Figure 7.23 Example of Procedure for Clearing Full Address Mode

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