334
11.1.3
Pin Configuration
Table 11.1 shows the DMAC pins.
Table 11.1
DMAC Pins
Channel
Name
Symbol
I/O
Function
0
DMA transfer request
DREQ0
I
DMA transfer request input from
external device to channel 0
DMA transfer request
acceptance
DACK0
O
Strobe output to an external I/O upon
DMA transfer request from external
device to channel 0
DMA request
acknowledge
DRAK0
O
Output showing that DREQ0 has been
accepted
1
DMA transfer request
DREQ1
I
DMA transfer request input from
external device to channel 1
DMA transfer request
acceptance
DACK1
O
Strobe output to an external I/O upon
DMA transfer request from external
device to channel 1
DMA request
acknowledge
DRAK1
O
Output showing that DREQ1 has been
accepted
Summary of Contents for SH7709S
Page 2: ...Hitachi SuperH RISC engine SH7709S Hardware Manual ADE 602 250 Rev 1 0 09 21 01 Hitachi Ltd ...
Page 75: ...56 ...
Page 107: ...88 ...
Page 125: ...106 ...
Page 139: ...120 ...
Page 203: ...184 ...
Page 245: ...226 ...
Page 411: ...392 ...
Page 609: ...590 ...
Page 635: ...616 ...
Page 663: ...644 ...
Page 679: ...660 ...