HD6432351 datasheet(284/1025 Pages) RENESAS

Part #	HD6432351

Description	16-Bit Single-Chip Microcomputer

PDF	1025 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

Logo

284 / 1025 page

Section 7 DMA Controller (DMAC)

Rev. 3.00 Sep 15, 2006 page 250 of 988

REJ09B0330-0300

Figure 7.11 illustrates operation in normal mode.

Address TA

Address BA

Transfer

Address TB

Notes:

Address

Where :

Address BB

= LA

= LB

= LA + SAIDE • (–1)SAID • (2DTSZ • (N–1))

= LB + DAIDE • (–1)DAID • (2DTSZ • (N–1))

= Value set in MARA

= Value set in MARB

= Value set in ETCRA

Figure 7.11 Operation in Normal Mode

Transfer requests (activation sources) are external requests and auto-requests.

With auto-request, the DMAC is only activated by register setting, and the specified number of

transfers are performed automatically. With auto-request, cycle steal mode or burst mode can be

selected. In cycle steal mode, the bus is released to another bus master each time a transfer is

performed. In burst mode, the bus is held continuously until transfer ends.

HD6432351 Datasheet(PDF) 284 Page - Renesas Technology Corp