SH7670 Datasheet, PDF (322/1292 Pages) Renesas Technology Corp – 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7670 Series

Section 8 Direct Memory Access Controller (DMAC)
8.2 Input/Output Pins
The external pins for DMAC are described below. Table 8.1 lists the configuration of the pins that
are connected to external bus. DMAC has pins for two channels (channels 0 and 1) for external
bus use.
Table 8.1 Pin Configuration
Channel Name
Abbreviation I/O
0
DMA transfer request DREQ0
I
DMA transfer request DACK0
O
acknowledge
1
DMA transfer request DREQ1
I
DMA transfer request DACK1
O
acknowledge
0
DMA transfer end
TEND0
O
1
DMA transfer end
TEND1
O
Function
DMA transfer request input from an
external device to channel 0
DMA transfer request acknowledge
output from channel 0 to an external
device
DMA transfer request input from an
external device to channel 1
DMA transfer request acknowledge
output from channel 1 to an external
device
DMA transfer end output for channel 0
DMA transfer end output for channel 1
Rev. 1.00 Nov. 14, 2007 Page 296 of 1262
REJ09B0437-0100