PXD10RM Datasheet, PDF (981/1332 Pages) Freescale Semiconductor, Inc – PXD10 Microcontroller

Chapter 27
Periodic Interrupt Timer (PIT)
27.1 Introduction
27.1.1 Overview
The PIT is an array of timers that can be used to raise interrupts and trigger DMA channels.
This device has one PIT module with four Timer Channels (PIT channels 0 through 3). These are
connected to the Trigger input 0 through 3 of the DMA MUX.
Figure 27-1 shows the PIT block diagram.
Peripheral
Bus
PIT
PIT
Registers
interrupts
.
.
.
triggers
Peripheral
Bus Clock
Timer 0
.
.
.
Timer 3
Figure 27-1. PIT block diagram
27.1.2 Features
The main features of this block are:
• Timers can generate DMA trigger pulses
• Timers can generate interrupts
• All interrupts are maskable
Freescale Semiconductor
PXD10 Microcontroller Reference Manual, Rev. 1
Preliminary—Subject to Change Without Notice
27-1