Intel IXP45X, IXP46X manual Contents, Introduction

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

Contents

1.0	Introduction		..............................................................................................................	9
	1.1	Content Overview		9
	1.2	Related Documentation		10
	1.3	Acronyms and Abbreviations		11
	1.4	Overview		11
	1.5	Typical Applications		14
2.0	System Architecture			15
	2.1	System Architecture Description		15
	2.2	System Memory Map		15
3.0 General Hardware Design Considerations				17
	3.1	Soft Fusible Features		17
	3.2	DDR-266 SDRAM Interface		18
		3.2.1	Signal Interface	18
		3.2.2	DDR SDRAM Memory Interface	20
		3.2.3	DDR SDRAM Initialization	20
	3.3	Expansion Bus		20
		3.3.1	Signal Interface	21
		3.3.2	Reset Configuration Straps	21
		3.3.3	8-Bit Device Interface	23
		3.3.4	16-Bit Device Interface	23
		3.3.5	32-Bit Device Interface	24
		3.3.6	Flash Interface	27
		3.3.7	SRAM Interface	28
		3.3.8	Design Notes	28
	3.4	UART Interface		28
		3.4.1	Signal Interface	29
	3.5	MII/SMII Interface		30
		3.5.1	Signal Interface MII	31
		3.5.2	Device Connection, MII	33
		3.5.3	Signal Interface, SMII	34
		3.5.4	Device Connection, SMII	35
	3.6	GPIO Interface		35
		3.6.1	Signal Interface	36
		3.6.2	Design Notes	36
	3.7	I2C Interface		37
		3.7.1	Signal Interface	37
		3.7.2	Device Connection	37
	3.8	USB Interface		38
		3.8.1	Signal Interface	39
		3.8.2	Device Connection	40
	3.9	UTOPIA Level 2 Interface		41
		3.9.1	Signal Interface	42
		3.9.2	Device Connection	42
	3.10	HSS Interface		43
		3.10.1	Signal Interface	44
		3.10.2	Device Connection	46
	3.11	SSP Interface		46
		3.11.1	Signal Interface	47
		3.11.2	Device Connection	47
	3.12	PCI Interface		48
			Intel® IXP45X and Intel® IXP46X Product Line of Network Processors
February 2007				HDD
Document Number: 305261, Revision: 004				3