Intel manual Register 2 82555 Identifier Register Bit Definitions

Page 34

82555 — Networking Silicon

Bit(s)	Name		Description	Default	R/W


6	Management	1	= 82555 will accept management frames with	--	RO
	Frames Preamble	preamble suppressed
	Suppression	0	= 82555 will not accept management frames with
		0	= 82555 will not accept management frames with
		preamble suppressed

5	Auto-Negotiation	1	= Auto-Negotiation process completed	0	RO
	Complete	0	= Auto-Negotiation process has not completed
		0	= Auto-Negotiation process has not completed

4	Remote Fault	1	= Remote fault condition detected	0	RO
		0	= No remote fault condition detected		P

3	Auto-Negotiation	1	= 82555 is able to perform Auto-Negotiation	1	RO
	Ability	0	= 82555 is in repeater mode and Auto-Negotiation
		0	= 82555 is in repeater mode and Auto-Negotiation
		Disable pin is high

2	Link Status	1	= Valid link has been established	0	RO
		0	= Invalid link detected		LL
					SC

1	Jabber Detect	1	= Jabber condition detected	0	RO
		0	= No jabber condition detected		LH
					SC

0	Extended	1	= Extended register capabilities enabled	1	RO
	Capability	0	= No extended register capabilities
		0	= No extended register capabilities

7.2.1.3Register 2: 82555 Identifier Register Bit Definitions

Bit(s)	Name	Description	Default	R/W


15:0	82555 ID (high	Value: 02A8H	--	RO
	byte)

7.2.1.4Register 3: 82555 Identifier Register Bit Definitions

Bit(s)	Name	Description	Default	R/W


15:0	82555 ID (low	Value: 0150H	--	RO
	byte)

7.2.1.5Register 4: Auto-Negotiation Advertisement Register Bit Definitions

Bit(s)	Name	Description	Default	R/W


15	Next Page	Constant 0 = Transmitting primary capability data	--	RO
		page

14	Reserved	This bit is reserved and should be set to 0b.	0	RO

13	Remote Fault	1 = Indicate link partner’s remote fault	0	RW
		0 = No remote fault

12:5	Technology Ability	Technology Ability Field is an 8-bit field containing	--	RW
	Field	information indicating supported technologies specific
		to the selector field value.

4:0	Selector Field	The Selector Field is a 5-bit field identifying the type of	00001	RO
		message to be sent via Auto-Negotiation. This field is
		read only in the 82555 and contains a value of
		00001b, IEEE Standard 802.3.

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Datasheet

Image 34

Contents Product Features 82555 10/100 Mbps LAN Physical Layer InterfaceNetworking Silicon Revision DescriptionContents Repeater Mode Functional Overview IntroductionCompliance to Industry Standards Networking Silicon 100 Mbps Mode Architectural Overview10 Mbps Mode MII TX InterfaceMedia Independent Interface MII Repeater mode only Transmit Error From RICYes Pin Definitions Pin Numbers and LabelsMedia Independent Interface MII Pins Clock PinsTwisted Pair Ethernet TPE Pins Pin TypesMedia Access Control/Repeater Interface Control Pins LED Pins External Bias PinsMiscellaneous Control Pins VCC Power and Ground PinsVSS 100BASE-TX Transmit Clock Generation 100BASE-TX Adapter Mode OperationSymbol 5B Symbol Code 4B Nibble Code 100BASE-TX Transmit Blocks2 100BASE-TX Scrambler and MLT-3 Encoder InvalidNRZ to MLT-3 Encoding Diagram 3 100BASE-TX Transmit FramingTransmit Driver 100BASE-TX Receive BlocksVendor Model/Type 100BASE-TX Collision Detection Link Integrity 100BASE-TX Link Integrity and Auto-Negotiation SolutionCombination Tx/T4 Auto-Negotiation Solution Auto-NegotiationAdapter Mode Addresses Auto 10/100 Mbps Speed SelectionNetworking Silicon Datasheet 10BASE-T Transmit Blocks 10BASE-T Functionality in Adapter Mode10BASE-T Transmit Clock Generation 10BASE-T Receive Blocks10BASE-T Link Integrity 3 10BASE-T Error Detection and Reporting10BASE-T Collision Detection 10BASE-T Jabber Control Function10BASE-T Full Duplex Networking Silicon Datasheet Special Repeater Features Repeater ModeConnectivity Clock Signal Example Management Data Interface MDI Frame StructureMDI Registers 0 Bits Name Description DefaultMDI Registers TransitionRegister 1 Status Register Bit Definitions 10BASE-TRegister 2 82555 Identifier Register Bit Definitions MDI Registers 8 MDI Registers 16Register 17 82555 Special Control Bit Definitions 100BASE-TX150 Register 22 Receive Symbol Error Counter Bit Definitions Actled LiledDescription Bit Setting TechnologyAuto-Negotiation Functionality Priority TechnologyParallel Detect and Auto-Negotiation PriorityAuto-Negotiation and Parallel Detect Networking Silicon Datasheet LED Descriptions Networking Silicon Datasheet Loopback Reset and Miscellaneous Test ModesReset Scrambler BypassTest Instruction Coding Number Code Test Instruction Select Input to ToutAbsolute Maximum Ratings Electrical Specifications and Timing ParametersDC Characteristics General Operating Conditions11.3.3 100BASE-TX Voltage/Current DC Characteristics Total supply current 230 Leakage on analog pinsMII Clock Specifications AC CharacteristicsSymbol Parameter Conditions Min Typ Max Units MII Timing Parameters MII Clocks AC TimingRepeater Mode Timing Parameters RXC tri-stated aTransmit Packet Timing Parameters Squelch Test Timing ParametersJabber Timing Parameters Receive Packet Timing Parameters11.4.8 10BASE-T Normal Link Pulse NLP Timing Parameters Auto-Negotiation Fast Link Pulse FLP Timing ParametersReset Timing Parameters 11.4.11 X1 Clock Specifications11.4.12 100BASE-TX Transmitter AC Specification X1 Clock SpecificationsSymbol Description Min Norm Max 12.0 82555 Package Information10.0