86
1. Interrupt request to CPU
2. Activation request to DTC
3. Activation request to DMAC
4. Selection of a number of the above
For details of interrupt requests that can be used to activate the DTC or DMAC, see section 6,
Data Transfer Controller, and section 5, DMA Controller, in the H8S/2678 Series Hardware
Manual.
3.7.2
Block Diagram
Figure 3.9 shows a block diagram of the DTC, DMAC, and interrupt controller.
DMAC
Selection
circuit
DTCER
DTVECR
Control logic
Priority
determination
CPU
DTC
Select
signal
IRQ
interrupt
On-chip
supporting
module
Clear
signal
Interrupt controller
I, I2 to I0
DTC activation
request vector
number
CPU interrupt
request vector
number
SWDTE
clear signal
Clear signal
Interrupt source
clear signal
Disable
signal
Clear
signal
Interrupt
request
Figure 3.9 Interrupt Control for DTC and DMAC
Содержание H8S/2670
Страница 5: ......
Страница 9: ......
Страница 199: ...182 ...
Страница 361: ...344 ...
Страница 393: ...376 ...
Страница 647: ...630 ...