Datasheet

Chapter 9. Interrupt Controller 9-1
Chapter 9
Interrupt Controller
This chapter describes the operation of the interrupt controller portion of the system
integration module (SIM). It includes descriptions of the registers in the interrupt controller
memory map and the interrupt priority scheme.
9.1 Overview
The SIM provides a centralized interrupt controller for all MCF5407 interrupt sources,
which consist of the following:
• External interrupts
• Software watchdog timer
• Timer modules
•I
2
C module
• UART modules
• DMA module
Figure 9-1 is a block diagram of the interrupt controller.
Figure 9-1. Interrupt Controller Block Diagram
Interrupt Controller
12 ICRs
IMR
IRQ[1,3,5,7]
4
AVR
IPR
IRQPAR
Software
Watchdog
Two
Two UARTs
DMA
I
2
C Module
Four
Channels
General-
Purpose
Timers
System Integration Module (SIM)