HD6417034B RENESAS [Renesas Technology Corp], HD6417034B Datasheet - Page 93
HD6417034B
Manufacturer Part Number
HD6417034B
Description
32-Bit RISC Microcomputer
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417034B.pdf
(687 pages)
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5.1
The interrupt controller (INTC) determines the priority of interrupt sources and controls interrupt
requests to the CPU. INTC has registers for assigning priority levels to interrupt sources. These
registers handle interrupt requests according to user-specified priorities.
5.1.1
The interrupt controller has the following features:
5.1.2
Figure 5.1 shows a block diagram of the interrupt controller.
16 settable priority levels: Five interrupt priority registers can set 16 levels of interrupt
priorities for IRQ and on-chip supporting module interrupt sources.
NMI noise canceller function: INTC has an NMI input level bit that indicates the NMI pin
status. By reading this bit in the interrupt exception handling routine, the pin status can be
checked for use in a noise canceller function.
The interrupt controller can notify external devices (via the IRQOUT pin) that an on-chip
interrupt has occurred. In this way an external device can, for example, be informed if an on-
chip interrupt occurs while the chip is operating in bus-released mode and the bus has been
requested.
Features
Block Diagram
Overview
Section 5 Interrupt Controller (INTC)
Rev. 7.00 Jan 31, 2006 page 67 of 658
Section 5 Interrupt Controller (INTC)
REJ09B0272-0700
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