HD64F2149 Datasheet, PDF (166/1035 Pages) Renesas Technology Corp – Hitachi 16-Bit Single-Chip Microcomputer

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.
5.7.2 Block Diagram
Figure 5.13 shows a block diagram of the DTC and 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
Interrupt controller
Determination of
priority
DTC activation
request vector
number
Clear signal
DTC
CPU interrupt
request vector
number
I, UI
CPU
Figure 5.13 Interrupt Control for DTC
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