Intel 317698-001 manual Contents

82575 Ethernet Controller Design Guide

Contents

1.0	Introduction		..............................................................................................................	1
	1.1	Scope		1
	1.2	Reference Documents		2
2.0 PCI Express Port Connection to the Device				3
	2.1	PCI Express Reference Clock		3
	2.2	Other PCI Express Signals		3
	2.3	Physical Layer Features		3
		2.3.1	Link Width Configuration	3
		2.3.2	Polarity Inversion	4
		2.3.3	Lane Reversal	4
	2.4	PCI Express Routing		5
3.0 Ethernet Component Design Guidelines				7
	3.1	General Design Considerations for Ethernet Controllers		7
		3.1.1	Clock Source	7
		3.1.2 Magnetics for 1000 BASE-T		7
	3.2	Designing with the 82575/EB/ES Gigabit Ethernet Controller		8
		3.2.1 LAN Disable for 82575 Ethernet Controller Gigabit Ethernet Controller		9
		3.2.2	Serial EEPROM	10
		3.2.3	EEPROM Map Information	11
		3.2.4	FLASH	12
	3.3	SMBus and NC-SI		14
	3.4	Power Supplies for the 82575 Ethernet Controller Controllers		15
		3.4.1 82575 Ethernet Controller Power Sequencing		17
		3.4.2 82575 Ethernet Controller Device Power Supply Filtering		19
		3.4.3 82575 Ethernet Controller Controller Power Management and Wake Up		19
		3.4.4	Power Management	20
	3.5	82575 Ethernet Controller Device Test Capability		22
	3.6	PHY Functionality		22
		3.6.1 Auto Cross-over for MDI and MDI-X resolution		22
		3.6.2	Smartspeed	23
		3.6.3	Flow Control	23
		3.6.4	Low-Power Link Up	23
		3.6.5	Link Energy Detect	24
		3.6.6	Polarity Correction	24
		3.6.7 Auto-Negotiation differences between PHY, SerDes and SGMII		25
		3.6.8 Copper PHY Link Configuration		25
	3.7	Copper/Fiber Switch		26
	3.8	Device Disable		27
		3.8.1 BIOS handling of Device Disable		28
	3.9	Software-Definable Pins (SDPs)		28
4.0 Frequency Control Device Design Considerations				30
	4.1	Frequency Control Component Types		30
		4.1.1	Quartz Crystal	30
		4.1.2	Fixed Crystal Oscillator	30
		4.1.3	Programmable Crystal Oscillators	31
		4.1.4	Ceramic Resonator	31
5.0	Crystal Selection Parameters			32
	5.1	Vibrational Mode		32
	5.2	Nominal Frequency		32

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