MPC8540 datasheet(779/1302 Pages) FREESCALE

Part #	MPC8540

Description	MPC8540 PowerQUICC III??Integrated Host Processor Reference Manual

PDF	1302 Pages

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Manufacturer	FREESCALE [Freescale Semiconductor, Inc]

Direct Link	http://www.freescale.com

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779 / 1302 page

Introduction

MPC8540 PowerQUICC III Integrated Host Processor Reference Manual, Rev. 1

Freescale Semiconductor

15-1

Chapter 15

DMA Controller

This chapter describes the DMA controller of this device.

15.1 Introduction

The DMA controller transfers blocks of data between the RapidIO controller, PCI, the local bus

controller (LBC) interface, and the local address space, independent of the e500 core or external

hosts.

15.1.1 Block Diagram

Figure 15-1 shows the block diagram of the DMA controller.

Figure 15-1. DMA Block Diagram

15.1.2 Overview

The DMA controller has four high-speed DMA channels. Both the e500 core and external devices

can initiate DMA transfers. All channels are capable of complex data movement and advanced

CHN 0

CHN 1

CHN 2

CHN 3

Arbitration and Bandwidth Control

Source

Controls

Destination

Controls

Address

Controls

Tenure

Data

Controls

Tenure

Address Interface

Data Interface

DMA Controller

MPC8540 Datasheet(PDF) 779 Page - Freescale Semiconductor, Inc