MPC8260A datasheet(2/52 Pages) FREESCALE

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MPC8260A PowerQUICC™ II Integrated Communications Processor Hardware Specifications, Rev. 1.1

Freescale Semiconductor

Features

Figure 1 shows the block diagram for the MPC8266, the HiP4 superset device. Shaded portions indicate

functionality that is not available on all devices; refer to the notes.

Figure 1. MPC8266 Block Diagram

Features

The major features of the MPC826xA family are as follows:

•

Dual-issue integer core

— A core version of the EC603e microprocessor

— System core microprocessor supporting frequencies of 150–300 MHz

— Separate 16-Kbyte data and instruction caches:

– Four-way set associative

– Physically addressed

– LRU replacement algorithm

16 Kbytes

G2 Core

I-Cache

I-MMU

16 Kbytes

D-Cache

D-MMU

Communication Processor Module (CPM)

Timers

Parallel I/O

Baud Rate

Generators

32 Kbytes

32-bit RISC Microcontroller

and Program ROM

Serial

DMAs

4 Virtual

IDMAs

60x-to-PCI

Bridge2,3

Bridge

Memory Controller

Clock Counter

System Functions

System Interface Unit

(SIU)

Local Bus

32 bits, up to 83 MHz

PCI Bus2,3

32 bits, up to 66 MHz

MCC1

MCC2

FCC1

FCC2

FCC3

SCC1

SCC2

SCC3

SCC4

SMC1

SMC2

SPI

I2C

Serial Interface

3 MII

2 UTOPIA

Ports

Ports6

60x Bus

Microcode

IMA1,3

Dual-Port RAM

Interrupt

Controller

Time Slot Assigner

TC Layer Hardware1,3

8 TDM Ports5

Non-Multiplexed

I/O

60x-to-Local

Bus Interface Unit

Notes:

1 MPC8264

2 MPC8265

3 MPC8266

4 Not on MPC8255

5 4 TDM ports on the MPC8255

6 2 MII ports on the MPC8255

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