Renesas SH7641 - Manual (Page 457)

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