Intel 82555 manual 11.3.3 100BASE-TX Voltage/Current DC Characteristics

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82555 — Networking Silicon

Symbol	Parameter Description	Condition	Min	Typ	Max	Units


VIDA10	Input differential accept voltage	5 MHz ≤ f ≤ 10 MHz	±585		±3100	mVP
VIDR10	Input differential reject voltage	5 MHz ≤ f ≤ 10 MHz			±300	mVP
VICM10	Input common mode voltage			VCC/2		V
VOD10	Output differential voltage	RL = 100 Ωb	±2.2		±2.8	V
VOD10	Output differential voltage	RBIAS10 = 768 Ω	±2.2		±2.8	V
		RBIAS10 = 768 Ω

c	Line driver supply	RBIAS10 = 768 Ω		110		mA
ICCT10	Line driver supply	RBIAS10 = 768 Ω		110		mA
d	Current on all VCC pins			120		mA
ICC10	Current on all VCC pins			120		mA
ICCT10TOT	Total supply current			230		mA
e	Leakage on analog pins				20	mA
LILA10	Leakage on analog pins				20	mA

a.This value is measured across the receive differential pins, RDP and RDN.

b.RL is the resistive load across the receive differential pins, RDP and RDN.

c.Transmitter current is measured with a 1:1 transformer on the center tap.

d.Current is measured on all VCC pins at VCC = 5.25 V.

e.The analog pins are: TDP, TDN, RDP, RDN, RBIAS10, and RBIAS100.

Rbias10

8 0 5 Ω

7 6 8 Ω

7 3 5 Ω		1 1 5 m A Icct10
1 0 5 m A	1 1 0 m A	1 1 5 m A Icct10

Figure 11. RBIAS10 Resistance versus ICCT10

11.3.3100BASE-TX Voltage/Current DC Characteristics

Symbol	Parameter Description	Condition	Min	Typ	Max	Units


		DC
RID100	Input differential resistance	VRDP = (VCC/2) +	10			KΩ
RID100	Input differential resistance	0.5 V	10			KΩ
		VRDN = (VCC/2) -
		0.5 V

VIDA100	Input differential accept voltage		±500			mVP
VIDR100	Input differential reject voltage		±100			mVP
VICM100	Input common mode voltage			VCC/2		V
a	Output differential voltage	RBIAS100 = 634 Ω	±0.95	±1.00	±1.05	VP
VOD100	Output differential voltage	RBIAS100 = 634 Ω	±0.95	±1.00	±1.05	VP
b	Line driver supply	RBIAS100 = 634 Ω		40		mA
ICCT100	Line driver supply	RBIAS100 = 634 Ω		40		mA

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Datasheet

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Contents Product Features 82555 10/100 Mbps LAN Physical Layer InterfaceNetworking Silicon Revision DescriptionContents Repeater Mode Introduction Functional OverviewCompliance to Industry Standards Networking Silicon 100 Mbps Mode Architectural Overview10 Mbps Mode MII TX InterfaceMedia Independent Interface MII Transmit Error From RIC Repeater mode onlyYes Pin Definitions Pin Numbers and LabelsClock Pins Twisted Pair Ethernet TPE PinsMedia Independent Interface MII Pins Pin TypesMedia Access Control/Repeater Interface Control Pins LED Pins External Bias PinsMiscellaneous Control Pins Power and Ground Pins VCCVSS 100BASE-TX Adapter Mode Operation Symbol 5B Symbol Code 4B Nibble Code100BASE-TX Transmit Clock Generation 100BASE-TX Transmit Blocks2 100BASE-TX Scrambler and MLT-3 Encoder InvalidNRZ to MLT-3 Encoding Diagram 3 100BASE-TX Transmit Framing100BASE-TX Receive Blocks Transmit DriverVendor Model/Type 100BASE-TX Collision Detection 100BASE-TX Link Integrity and Auto-Negotiation Solution Combination Tx/T4 Auto-Negotiation SolutionLink Integrity Auto-NegotiationAdapter Mode Addresses Auto 10/100 Mbps Speed SelectionNetworking Silicon Datasheet 10BASE-T Functionality in Adapter Mode 10BASE-T Transmit Clock Generation10BASE-T Transmit Blocks 10BASE-T Receive Blocks3 10BASE-T Error Detection and Reporting 10BASE-T Collision Detection10BASE-T Link Integrity 10BASE-T Jabber Control Function10BASE-T Full Duplex Networking Silicon Datasheet Repeater Mode Special Repeater FeaturesConnectivity Clock Signal Example Management Data Interface MDI Frame StructureBits Name Description Default MDI RegistersMDI Registers 0 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 LiledBit Setting Technology Auto-Negotiation FunctionalityDescription Priority TechnologyParallel Detect and Auto-Negotiation PriorityAuto-Negotiation and Parallel Detect Networking Silicon Datasheet LED Descriptions Networking Silicon Datasheet Reset and Miscellaneous Test Modes Reset Loopback Scrambler BypassTest Instruction Coding Number Code Test Instruction Select Input to ToutElectrical Specifications and Timing Parameters DC CharacteristicsAbsolute Maximum Ratings General Operating Conditions11.3.3 100BASE-TX Voltage/Current DC Characteristics Total supply current 230 Leakage on analog pinsAC Characteristics MII Clock SpecificationsSymbol 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