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Renesas Stereo System SH7709S User Manual

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Rev. 5.00, 09/03, page 330 of 760
11.1.3
Pin Configuration
Table 11.1 shows the DMAC pins.
Table 11.1
DMAC Pins
Channel
Name
Symbol
I/O
Function
0
DMA transfer request
DREQ0
I
DMA transfer request input from
external device to channel 0
DMA transfer request
acceptance
DACK0
O
Strobe output to an external I/O upon
DMA transfer request from external
device to channel 0
DMA request
acknowledge
DRAK0
O
Output showing that DREQ0 has been
accepted
1
DMA transfer request
DREQ1
I
DMA transfer request input from
external device to channel 1
DMA transfer request
acceptance
DACK1
O
Strobe output to an external I/O upon
DMA transfer request from external
device to channel 1
DMA request
acknowledge
DRAK1
O
Output showing that DREQ1 has been
accepted