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Section 13 Direct Memory Access Controller (DMAC)
Rev. 4.00 Sep. 14, 2005 Page 407 of 982
REJ09B0023-0400
13.2 Input/Output Pins
The external pins for DMAC are described below. Table 13.1 lists the configuration of the pins
that are connected to external bus. DMAC has pins for 2 channels (channels 0 and 1) for external
bus use.
Table 13.1 Pin Configuration
Channel Name Symbol I/O Function
DMA transfer request DREQ0 I DMA transfer request input from external
device to channel 0
DMA transfer request
acknowledge
DACK0 O Strobe output to an external I/O at DMA
transfer request from external device to
channel 0
0
DMA transfer end TEND O DMA transfer end output for channel 0
DMA transfer request DREQ1 I DMA transfer request input from external
device to channel 1
1
DMA transfer request
acknowledge
DACK1 O Strobe output to an external I/O at DMA
transfer request from external device to
channel 1