Intel® IXP42X product line and IXC1100 control plane processors—Introduction
Intel® IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
DM September 2006
26 Order Number: 252480-006US
1.0 Introduction

1.1 About This Document

This document is the main reference for the external architecture of the Intel® IXP42X
Product Line of Network Processors and IXC1100 Control Plane Processor.

1.1.1 How to Read This Document

Familiarity with ARM* Version 5TE Architecture is necessary in order to understand
some aspects of this document.
Each chapter in this document focuses on a specific architectural feature of the Intel®
IXP42X product line and IXC1100 control plane processors.
Note: This document’s special terms and acronyms are listed in “Terminology and
Conventions” on page 26.

1.2 Other Relevant Documents

1.3 Terminology and Conventions

1.3.1 Number Representation

All numbers in this document can be assumed to be base 10 unless designated
otherwise. In text and pseudo code descriptions, hexadecimal numbers have a prefix of
0x and binary numbers have a prefix of 0b. For example, 107 would be represented as
0x6B in hexadecimal and 0b1101011 in binary.
Document Title Document #
Intel® IXP4XX Product Line Specification Update 306428
Intel® IXP42X Product Line of Network Processors and IXC1100 Control Plane
Processor Datasheet 252479
Intel® IXP400 Software Specification Update 273795
Intel® IXP400 Software Programmer’s Guide 252539
ARM* Architecture Version 5TE Specification ARM DDI 0100E
(ISBN 0 201
737191)
PCI Local Bus Specification, Rev.2.2 N/A
Universal Serial Bus Specification, Revision 1.1 N/A
UTOPIA Level 2 Specification, Revision 1.0 N/A
IEEE 802.3 Specification N/A
IEEE 1149.1 Specification N/A