SH7721 datasheet(500/1524 Pages) RENESAS

Part #	SH7721

Description	Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

PDF	1524 Pages

Scroll/Zoom	100%

Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

Logo

500 / 1524 page

Section 10

Direct Memory Access Controller (DMAC)

Rev. 3.00 Jan. 18, 2008 Page 438 of 1458

REJ09B0033-0300

Figure 10.8 shows an example of DMA transfer timing in single address mode.

Address output to external memory space

Select signal to external memory space

Data output from external device with DACK

DACK signal (active-low) to external device with DACK

Write strobe signal to external memory space

Address output to external memory space

Data output from external memory space

DACK signal (active-low) to external device with DACK

Read strobe signal to external memory space

(a) External device with DACK

→ external memory space (ordinary memory)

(b) External memory space (ordinary memory)

→ external device with DACK

CKIO

A25 to A0

D31 to D0

DACKn

CSn

CKIO

A25 to A0

D31 to D0

DACKn

CSn

Figure 10.8

Example of DMA Transfer Timing in Single Address Mode

SH7721 Datasheet(PDF) 500 Page - Renesas Technology Corp