SH7729R Datasheet, PDF (418/855 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series

12.1.3 Pin Configuration
Table 12.1 shows the DMAC pins.
Table 12.1 DMAC Pins
Channel Name
0
DMA transfer request
DREQ acknowledge
DMA request
acknowledge
1
DMA transfer request
DREQ acknowledge
DMA request
acknowledge
Symbol I/O Function
DREQ0 I
DMA transfer request input from
external device to channel 0
DACK0 O
Strobe output to an external I/O upon
DMA transfer request from external
device to channel 0
DRAK0 O
Output showing that DREQ0 has been
accepted
DREQ1 I
DMA transfer request input from
external device to channel 1
DACK1 O
Strobe output to an external I/O upon
DMA transfer request from external
device to channel 1
DRAK1 O
Output showing that DREQ1 has been
accepted
Rev. 5.0, 09/03, page 372 of 806