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11.1.3
Pin Configuration
Table 11.1 shows the DMAC pins.
Table 11.1
DMAC Pin Configuration
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
acknowledge
DACK0
O
DMA transfer strobe output from
channel 0 to external device
DREQ0
acceptance
confirmation
DRAK0
O
Sampling receive acknowledge output
for DMA transfer request input from
external source
1
DMA transfer request
DREQ1
I
DMA transfer request input from
external device to channel 1
DMA transfer request
acknowledge
DACK1
O
DMA transfer strobe output from
channel 1 to external device
DREQ1
acceptance
confirmation
DRAK1
O
Sampling receive acknowledge output
for DMA transfer request input from
external source
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