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Freescale Semiconductor
Application Note
© Freescale Semiconductor, Inc., 2002, 2006. All rights reserved.
The MPC8260 PowerQUICC™ II
is a versatile
communications processor that integrates on one chip a
high-performance MPC603e microprocessor, a very flexible
system integration unit, and many communications
peripheral controllers for use in a variety of applications,
particularly in communications and networking systems.
The MPC8260 can operate with the internal RISC
microprocessor core disabled and allows an external
processor device to use all of the MPC8260 system
integration and communication features.
This application note describes the design of a system
containing a high-performance MPC7410 RISC
microprocessor and an MPC8260 device.
When used with an external processor, the MPC8260 does
not support a full error-correcting code (ECC) memory
system. Therefore, it is necessary to use an external memory
controller to support an ECC memory system. In the
application discussed in this document, a Tundra
Semiconductors PowerPro CA91L750 is used as the
memory controller.
Contents
1 Block Diagram of System . . . . . . . . . . . . . . . . . . . . . . .2
2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
3 Interface Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . .3
4 Initialization Software . . . . . . . . . . . . . . . . . . . . . . . . . .3
5 Interface Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . .4
6 Initialization Software . . . . . . . . . . . . . . . . . . . . . . . . .25
6.1 Main Initialization Routine—P2N.2 . . . . . . . . . . .25
6.2 Required Header File—init_cn.h . . . . . . . . . . . . .34
6.3 Required Header File—initPowerPro.h . . . . . . . .39
Using an MPC8260 and an MPC7410
with Shared Memory
by Dave McCartney
NCSG Applications
Freescale Semiconductor, Inc.
East Kilbride, Scotland
Document Number: AN2347
Rev. 1, 11/2006
