HD6432345 Datasheet, PDF (147/907 Pages) Hitachi Semiconductor – H8S/2345 F-ZTAT Hardware Manual

5.6 DTC Activation by Interrupt
5.6.1 Overview
The DTC can be activated by an interrupt. In this case, the following options are available:
• Interrupt request to CPU
• Activation request to DTC
• Selection of a number of the above
For details of interrupt requests that can be used with to activate the DTC, see section 7, Data
Transfer Controller.
5.6.2 Block Diagram
Figure 5.9 shows a block diagram of the DTC interrupt controller.
Interrupt
request
IRQ
interrupt
Interrupt source
On-chip
clear signal
supporting
module
Selection
circuit
Select
signal
Clear signal
DTCER
DTVECR
SWDTE
clear signal
Control logic
Determination of
priority
Interrupt controller
DTC activation
request vector
number
Clear signal
DTC
CPU interrupt
request vector
number
I, I2 to I0
CPU
Figure 5.9 Interrupt Control for DTC and DMAC
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