
348
6.2.3
Pins
Table 6.2
DMAC Pins
Channel
Name
Abbreviation
I/O
Function
0
DMA request 0
DREQ0
Input
DMAC channel 0 external request
DMA transfer
acknowledge 0
DACK0
Output
DMAC channel 0 single address
transfer acknowledge
DMA transfer end 0
TEND0
Output
DMAC channel 0 transfer end
1
DMA request 1
DREQ1
Input
DMAC channel 1 external request
DMA transfer
acknowledge 1
DACK1
Output
DMAC channel 1 single address
transfer acknowledge
DMA transfer end 1
TEND1
Output
DMAC channel 1 transfer end
6.3
Data Transfer Controller
6.3.1
Features
•
Transfer possible over any number of channels
•
Variety of transfer modes, including normal, repeat, and block transfer
•
Direct specification of 16-Mbyte address space possible
•
Byte or word can be selected as the transfer unit
•
A CPU interrupt can be requested for an interrupt that activates the DTC
•
Can be activated by software
•
Module stop mode can be set
Содержание H8S/2670
Страница 5: ......
Страница 9: ......
Страница 199: ...182 ...
Страница 361: ...344 ...
Страница 393: ...376 ...
Страница 647: ...630 ...