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3 high-performance system microprocessor, High-performance system microprocessor -17 – Motorola MPC8260 User Manual

Page 87

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MOTOROLA

Chapter 1. Overview

1-17

Part I. Overview

Serial throughput is enhanced by connecting one MPC8260 in master or slave mode (with
system core enabled or disabled) to another MPC8260 in master mode with the core
enabled. The core in MPC8260 A can access the memory on the local bus of MPC8260 B.

1.7.2.3 High-Performance System Microprocessor

Figure 1-11 shows a conÞguration with a high-performance system microprocessor
(MPC750).

Figure 1-11. High-Performance System Microprocessor Configuration

In this system, the MPC603e core internal is disabled and an external high-performance
microprocessor is connected to the 60x bus.

MPC750

32-Kbyte I cache

32-Kbyte D cache

Backside

Cache

MPC8260 (slave)

Local Bus

SDRAM/SRAM/DRAM

60x Bus

SDRAM/SRAM/DRAM

ATM

Connection Tables

Communication
Channels

UTOPIA

PHY

155 Mbps

PHY

ATM