Datasheet

Section 5 Interrupt Controller
Rev. 4.00 Jun 06, 2006 page 134 of 1004
REJ09B0301-0400
5.7 DTC Activation by Interrupt
5.7.1 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
• Both of the above
For details of interrupt requests that can be used to activate the DTC, see section 7, Data Transfer
Controller [H8S/2138 Group].
5.7.2 Block Diagram
Figure 5.13 shows a block diagram of the DTC and interrupt controller.
Selection
circuit
DTCER
DTVECR
Control logic
Determination of
priority
CPU
DTC
DTC activation
request vector
number
Clear signal
CPU interrupt
request vector
number
Select
signal
Interrupt
request
Interrupt source
clear signal
IRQ
interrupt
On-chip
supporting
module
Clear signal
Interrupt controller
I, UI
SWDTE
clear signal
Figure 5.13 Interrupt Control for DTC