H8SX1663 datasheet(371/1158 Pages) RENESAS

Part #	H8SX1663

Description	Renesas 32-Bit CISC Microcomputer H8SX Family / H8SX/1600 Series

PDF	1158 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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Section 7 DMA Controller (DMAC)

Rev.1.00 Jun. 07, 2006 Page 319 of 1102

REJ09B0294-0100

A block diagram of the DMAC is shown in figure 7.1.

External pins

DREQn

DACKn

TENDn

Interrupt signals

requested to the

CPU by each

channel

Internal activation sources

Internal activation

source detector

Controller

DMDR_n

DMRSR_n

DACR_n

DOFR_n

Internal address bus

Internal data bus

DSAR_n

DDAR_n

DTCR_n

DBSR_n

Module data bus

Address buffer

Data buffer

Operation unit

...

[Legend]

DSAR_n:

DMA source address register

DREQn: DMA transfer request

DDAR_n:

DMA destination address register

DACKn: DMA transfer acknowledge

DOFR_n:

DMA offset register

TENDn: DMA transfer end

DTCR_n:

DMA transfer count register

n = 0 to 3

DBSR_n:

DMA block size register

DMDR_n:

DMA mode control register

DACR_n:

DMA address control register

DMRSR_n:

DMA module request select register

Figure 7.1 Block Diagram of DMAC

H8SX1663 Datasheet(PDF) 371 Page - Renesas Technology Corp

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