H8SLASH3028F datasheet(250/923 Pages) RENESAS

Part #	H8/3028F

Description	Renesas 16-Bit Single-Chip Microcomputer H8 Family/H8/300H Series

PDF	923 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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250 / 923 page

Rev. 2.00, 09/03, page 220 of 890

Figure 7.8 illustrates how normal mode operates.

Address T

Address B

Transfer

Legend

SAID

DAID

Address T

Address B

= initial setting of MARA

= initial setting of MARB

= initial setting of ETCRA

= L

= L + SAIDE • (–1)

• (2

• N – 1)

= L

= L + DAIDE • (–1)

• (2

• N – 1)

DTSZ

Figure 7.8 Operation in Normal Mode

Transfers can be requested (activated) by an external request or auto-request. An auto-requested

transfer is activated by the register settings alone. The designated number of transfers are executed

automatically. Either cycle-steal or burst mode can be selected. In cycle-steal mode the DMAC

releases the bus temporarily after each transfer. In burst mode the DMAC keeps the bus until the

transfers are completed, unless there is a bus request from a higher-priority bus master.

For the detailed settings see section 7.3.4, Data Transfer Control Registers (DTCR).

H8/3028F Datasheet(PDF) 250 Page - Renesas Technology Corp