SH7641 Datasheet, PDF (457/1036 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7641 Series

Section 13 Direct Memory Access Controller (DMAC)
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
0
DMA transfer request
Symbol
DREQ0
DMA transfer request
acknowledge
DACK0
DMA transfer end
TEND
1
DMA transfer request DREQ1
DMA transfer request
acknowledge
DACK1
I/O Function
I
DMA transfer request input from external
device to channel 0
O Strobe output to an external I/O at DMA
transfer request from external device to
channel 0
O DMA transfer end output for channel 0
I
DMA transfer request input from external
device to channel 1
O Strobe output to an external I/O at DMA
transfer request from external device to
channel 1
Rev. 4.00 Sep. 14, 2005 Page 407 of 982
REJ09B0023-0400