Intel IXP43X manuels

Intel IXP43X Manuel d'utilisateur (86 pages)

marque: Intel | Catégorie: Conseils de développement | Taille: 0.71 MB |

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Table des matières

IXP43X Product Line of

1

Network Processors

1

HDG April 2007

2

Contents

3

Revision History

7

1.0 Introduction

9

1.2 Related Documentation

10

1.3 Acronyms

10

1.4 Overview

11

1.5 Typical Applications

14

2.0 System Architecture

15

Processors

16

Intel® IXP43X Product

16

Line of Network

16

3.1 Soft Fusible Features

17

3.2 DDRII/I SDRAM Interface

18

3.2.1 Signal Interface

19

3.3 Expansion Bus

21

3.3.3 8-Bit Device Interface

24

3.3.4 16-Bit Device Interface

25

8-Bit Device

26

16-Bit Device

26

3.4.1 Signal Interface

28

3.5 MII Interface

29

3.5.1 Signal Interface MII

30

3.5.2 Device Connection, MII

31

3.6 GPIO Interface

32

3.7 USB Interface

33

3.7.1 Signal Interface

34

Host Device

36

3.8 UTOPIA Level 2 Interface

37

3.8.2 Device Connection

41

3.9.1 Signal Interface

42

3.9.2 Device Connection

42

3.10.1 Signal Interface

44

3.10.2 Device Connection

44

3.11.1 Signal Interface

46

3.11.3 PCI Option Interface

48

3.12 JTAG Interface

50

3.13 Input System Clock

51

B4111-005

52

Intel® IXP43X

52

Product Line of

52

Network

52

Table 21. Power Supply

53

4.0 General PCB Guide

56

4.5 Stack-Up Selection

57

•Inexpensive

57

B2275-02

59

5.1 Overview

60

5.2 General Layout Guidelines

60

Return Current

61

B2266-01

62

25 mils min

62

PBGA Package

63

5.2.4 USB V2.0 Considerations

64

5.2.5 Crosstalk

64

5.2.7 Trace Impedance

65

5.2.8 Power and Ground Plane

65

6.1 Electrical Interface

67

6.2 Topology

67

6.3 Clock Distribution

68

6.3.1 Trace Length Limits

69

6.3.2 Routing Guidelines

70

6.3.3 Signal Loading

70

7.0 DDRII / DDRI SDRAM

71

DDR SDRAM

73

Requirements

75

Signal-Timing Analysis

76

7.3.2 Timing Relationships

79

7.3.3.1 Clock Group

82

7.3.3.3 Command Groups

85

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