MPC8280 datasheet(3/80 Pages) FREESCALE

3 / 80 page

MPC8280 PowerQUICC II™ Family Hardware Specifications, Rev. 1.7

Freescale Semiconductor

Overview

Figure 1 shows the block diagram. Shaded portions are device-specific; refer to the notes below.

Figure 1. MPC8280 Block Diagram

1.1 Features

The major features of the MPC8280 are as follows:

•

Dual-issue integer (G2_LE) core

— A core version of the EC603e microprocessor

— System core microprocessor supporting frequencies of 166–450 MHz

— Separate 16-Kbyte data and instruction caches:

– Four-way set associative

– Physically addressed

– LRU replacement algorithm

— Architecture-compliant memory management unit (MMU)

— Common on-chip processor (COP) test interface

16 Kbytes

G2_LE Core

I-Cache

I-MMU

16 Kbytes

D-Cache

D-MMU

Communication Processor Module (CPM)

Timers

Parallel I/O

Baud Rate

Generators

32 KB

32-bit RISC Microcontroller

and Program ROM

Serial

DMAs

4 Virtual

IDMAs

60x-to-PCI

Bridge

Memory Controller

Clock Counter

System Functions

System Interface Unit

(SIU)

Local Bus

32 bits, up to 100 MHz

PCI Bus

32 bits, up to 66 MHz

MCC11 MCC2

FCC1

FCC2

FCC3

SCC1

SCC2

SCC3

SCC4/

SMC1

SMC2

SPI

I2C

Serial Interface2

3 MII or RMII

2 UTOPIA

Ports3

Ports

60x Bus

Microcode

IMA1

Data

Interrupt

Controller

Time Slot Assigner

TC Layer Hardware1

8 TDM Ports2

Non-Multiplexed

I/O

60x-to-Local

Bus Interface Unit

32 KB

Instruction

Notes:

1 MPC8280 only (not on MPC8270, the VR package, nor the ZQ package)

2 MPC8280 has 2 serial interface (SI) blocks and 8 TDM ports. MPC8270 and the VR and ZQ packages have

only 1 SI block and 4 TDM ports (TDM2[A–D]).

3 MPC8280, MPC8275VR, MPC8275ZQ only (not on MPC8270, MPC8270VR, nor MPC8270ZQ)

RAM

USB

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