Section 5 Interrupt Controller (INTC)
Rev. 2.00 Mar 09, 2006 page 143 of 906
REJ09B0292-0200
Section 5 Interrupt Controller (INTC)
5.1
Overview
The interrupt controller (INTC) ascertains the priority order of interrupt sources and controls
interrupt requests to the CPU. The INTC has registers for setting the priority of each interrupt
which allow the user to set the order of priority in which interrupt requests are handled.
5.1.1
Features
The INTC has the following features:
•
Sixteen interrupt priority levels can be set
By setting the five interrupt priority registers, the priorities of on-chip peripheral module
interrupts can be selected at 16 levels for different request sources.
•
Vector numbers for on-chip peripheral module interrupt can be set
By setting the 24 vector number setting registers, the vector numbers of on-chip peripheral
module interrupts can be set to values from 0 to 127 for different request sources.
•
The IRL interrupt vector number setting method can be selected: Either of two modes can be
selected by a register setting: auto-vector mode in which vector numbers are determined
internally, and external vector mode in which vector numbers are set externally.
•
IRQ interrupt settings can be made (low level, rising-, falling-, or both-edge detection)
5.1.2
Block Diagram
Figure 5.1 shows a block diagram of the INTC.
Содержание SH7616
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Страница 932: ...Appendix D Package Dimensions Rev 2 00 Mar 09 2006 page 906 of 906 REJ09B0292 0200 ...
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