SH7720 Datasheet, PDF (471/1524 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

Section 10 Direct Memory Access Controller (DMAC)
10.2 Input/Output Pins
The external pins for the DMAC are described below. Table 10.1 lists the configuration of the pins
that are connected to external bus. The DMAC has pins for 2 channels (channels 0 and 1) for
external bus use.
Table 10.1 Pin Configuration
Channel Name
Pin Name
0
DMA transfer request DREQ0
DMA transfer request DACK0
reception
DMA transfer end
TEND0
1
DMA transfer request DREQ1
DMA transfer request DACK1
reception
DMA transfer end
TEND1
I/O
Function
Input DMA transfer request input from
external device to channel 0
Output DMA transfer request acknowledge
output from channel 0 to external
device
Output DMA transfer end of DMAC channel 0
output of
Input DMA transfer request input from
external device to channel 1
Output DMA transfer request acknowledge
output from channel 1 to external
device
Output DMA transfer end of DMAC channel 1
output
Rev. 3.00 Jan. 18, 2008 Page 409 of 1458
REJ09B0033-0300