SH7721 datasheet(471/1524 Pages) RENESAS

Part #	SH7721

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

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Manufacturer	RENESAS [Renesas Technology Corp]

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Section 10

Direct Memory Access Controller (DMAC)

Rev. 3.00 Jan. 18, 2008 Page 409 of 1458

REJ09B0033-0300

10.2

Input/Output Pins

The external pins for the DMAC are described below. Table 10.1 lists the configuration of the pins

that are connected to external bus. The DMAC has pins for 2 channels (channels 0 and 1) for

external bus use.

Table 10.1

Pin Configuration

Channel Name

Pin Name

I/O

Function

DMA transfer request

DREQ0

Input

DMA transfer request input from

external device to channel 0

DMA transfer request

reception

DACK0

Output

DMA transfer request acknowledge

output from channel 0 to external

device

DMA transfer end

TEND0

Output

DMA transfer end of DMAC channel 0

output of

DMA transfer request

DREQ1

Input

DMA transfer request input from

external device to channel 1

DMA transfer request

reception

DACK1

Output

DMA transfer request acknowledge

output from channel 1 to external

device

DMA transfer end

TEND1

Output

DMA transfer end of DMAC channel 1

output

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