Download DatasheetDirect.com

Freescale Semiconductor, Inc.
Application Note
AN2662
Rev. 0, 05/2004
Freescale Semiconductor, Inc...
Migrating from
PowerQUICC II to
PowerQUICC III
Nigel Dick
NCSD Applications
East Kilbrade,
Scotland
This application note outlines the considerations that are relevant to migrating from the
MPC826x (PowerQUICC II) family of devices to the higher performance MPC85xx
(PowerQUICC III) family. This document, explains the differences between the main system
blocks and internal cores, explores the initialization and reset sequences, and details the minor
modifications required to run existing PowerQUICC II software on the PowerQUICC III.
It is assumed that the reader has a basic understanding of the system blocks and operation of
the PowerQUICC II microprocessor family and HiP7 derivatives. Therefore, it is very
important that users are familiar with the following technical references in order to understand
the correct terminology and general MPC85xx and e500 programming model. At a minimum,
the user should refer to the MPC8560 PowerQUICC™ III Integrated Communications
Processor Reference Manual.
The following Motorola documents are referred to throughout this application note:
•
•
•
MPC8560 PowerQUICC™ III Integrated Communications Processor Reference
Manual (MPC8560RM)
PowerPC™ e500 Core Complex Reference Manual (E500CORERM)
MPC603e and e500 Register Model Comparison (AN2490)
The products described in this document are PowerPC™ microprocessor cores. This
application note outlines differences between the register models defined by the
Apple/IBM/Motorola (AIM) and Book E versions of the PowerPC architecture and the
registers implemented in the MPC603e processor and the e500 microprocessor core.
The following topics are addressed:
Topic
Section 1, “System Overview”
Section 2, “Core Differences”
Section 3, “Communications Processor Module (CPM)”
Section 4, “New Features on PowerQUICC III”
Section 5, “Initialization, Reset and Boot Procedures”
Section 6, “Software Considerations”
Section 7, “Summary”
For More Information On This Product,
Go to: www.freescale.com
Page
2
3
12
15
28
30
32