4.1. About interrupts

The ARM7EJ-S processor provides a two-level, fixed-priority hardware interrupt scheme.

The Fast Interrupt Request (FIQ) exception provides support for fast interrupts. The Interrupt Request (IRQ) exception provides support for normal priority interrupts. Refer to Exceptions for more details about the programmer’s model for interrupts and to Chapter 10 AC Parameters for details on interrupt signal timing.This chapter describes:

Copyright ©  2001 ARM Limited. All rights reserved.ARM DDI 0214B
Non-Confidential