IXP45X datasheet(3/148 Pages) INTEL

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Intel® IXP45X and Intel® IXP46X Product Line of Network Processors

August 2006

Datasheet

Document Number: 306261-004US

Datasheet—Intel® IXP45X and Intel® IXP46X Product Line of Network Processors

Contents

1.0

Product Features .......................................................................................................9

1.1

Product Line Features ..........................................................................................9

1.2

Model-Specific Features...................................................................................... 12

2.0

About This Document .............................................................................................. 13

3.0

Functional Overview ................................................................................................ 14

3.1

Key Functional Units .......................................................................................... 18

3.1.1

Network Processor Engines (NPEs)............................................................ 18

3.1.2

Internal Bus .......................................................................................... 19

3.1.2.1

North AHB ............................................................................... 20

3.1.2.2

South AHB ............................................................................... 20

3.1.2.3

Memory Port Interface............................................................... 21

3.1.2.4

APB Bus .................................................................................. 21

3.1.3

MII/SMII Interfaces ................................................................................ 21

3.1.4

UTOPIA Level 2 ...................................................................................... 22

3.1.5

USB 1.1 Device Interface ........................................................................ 22

3.1.6

USB 2.0 Host Interface ........................................................................... 22

3.1.7

PCI Controller ........................................................................................ 22

3.1.8

DDRI SDRAM Controller .......................................................................... 23

3.1.9

Expansion Interface................................................................................ 25

3.1.9.1

Expansion Bus Legacy Mode of Operation..................................... 25

3.1.9.2

Expansion Bus Enhanced Mode of Operation ................................. 26

3.1.10 High-Speed, Serial Interfaces................................................................... 26

3.1.11 UARTs .................................................................................................. 26

3.1.12 GPIO .................................................................................................... 27

3.1.13 Internal Bus Performance Monitoring Unit (IBPMU) ..................................... 28

3.1.14 Interrupt Controller ................................................................................ 28

3.1.15 Timers .................................................................................................. 28

3.1.16 IEEE 1588 Hardware Assistance ............................................................... 29

3.1.17 Synchronous Serial Port Interface............................................................. 29

3.1.18 I2C Interface ......................................................................................... 29

3.1.19 AES/DES/SHA/MD-5 ............................................................................... 30

3.1.20 Cryptography Unit .................................................................................. 30

3.1.21 Queue Manager...................................................................................... 31

3.2

Intel XScale® Processor ..................................................................................... 31

3.2.1

Super Pipeline........................................................................................ 32

3.2.2

Branch Target Buffer .............................................................................. 33

3.2.3

Instruction Memory Management Unit ....................................................... 33

3.2.4

Data Memory Management Unit ............................................................... 34

3.2.5

Instruction Cache ................................................................................... 34

3.2.6

Data Cache ........................................................................................... 34

3.2.7

Mini-Data Cache..................................................................................... 35

3.2.8

Fill Buffer and Pend Buffer ....................................................................... 35

3.2.9

Write Buffer........................................................................................... 35

3.2.10 Multiply-Accumulate Coprocessor ............................................................. 36

3.2.11 Performance Monitoring Unit.................................................................... 36

3.2.12 Debug Unit ............................................................................................ 36

4.0

Package Information ............................................................................................... 37

4.1

Package Description .......................................................................................... 37

4.1.1

Package Drawings .................................................................................. 37

4.1.2

Package Markings................................................................................... 40

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