Intel IXP43X manual Contents

Hardware Design Guidelines—Intel®IXP43X Product Line of Network Processors

Contents

1.0	Introduction		..............................................................................................................	9
	1.1	Content Overview		9
	1.2	Related Documentation		10
	1.3	Acronyms		10
	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	DDRII/I SDRAM Interface		18
		3.2.1	Signal Interface	19
		3.2.2	DDRII/I SDRAM Initialization	20
	3.3	Expansion Bus		21
		3.3.1	Signal Interface	21
		3.3.2	Reset Configuration Straps	22
		3.3.3	8-Bit Device Interface	24
		3.3.4	16-Bit Device Interface	25
		3.3.5	Flash Interface	26
	3.4	UART Interface		26
		3.4.1	Signal Interface	27
	3.5	MII Interface		28
		3.5.1	Signal Interface MII	29
		3.5.2	Device Connection, MII	30
	3.6	GPIO Interface		31
		3.6.1	Signal Interface	32
		3.6.2	Design Notes	32
	3.7	USB Interface		32
		3.7.1	Signal Interface	33
	3.8	UTOPIA Level 2 Interface		36
		3.8.1	Signal Interface	36
		3.8.2	Device Connection	40
	3.9	HSS Interface		40
		3.9.1	Signal Interface	41
		3.9.2	Device Connection	41
	3.10	SSP Interface		42
		3.10.1	Signal Interface	43
		3.10.2	Device Connection	43
	3.11	PCI Interface		44
		3.11.1	Signal Interface	45
		3.11.2	PCI Interface Block Diagram	46
		3.11.3	PCI Option Interface	47
		3.11.4	Design Notes	49
	3.12	JTAG Interface		49
		3.12.1	Signal Interface	50
	3.13	Input System Clock		50
		3.13.1	Clock Signals	50
		3.13.2	Clock Oscillator	50
		3.13.3	Recommendations for Crystal Selection	51
				Intel® IXP43X Product Line of Network Processors
April 2007				HDG
Document Number: 316844; Revision: 001US				3