Auto-Negotiation and Parallel Detect | Intel 82555 instruction

Networking Silicon — 82555

Negotiation or Parallel Detection with no data packets being transmitted. Connection is then established either by FLP exchange or Parallel Detection. The 82555 will look for both FLPs and link integrity pulses. The following diagram illustrates this process.

Force_Fail

Ability detect either by parallel detect or auto- negotiation.

Parallel Detectio	n	Auto-Negotiatio	n

10Base-T or 100Base-TX Link Ready

Look at Link Pulse; Auto-Negotiation capable = 0

FLP capable

Auto-Negotiation capable = 1 Ability Match

LINK PASS

Auto-Negotiation Complete bit set

Figure 10. Auto-Negotiation and Parallel Detect

Datasheet

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Image 41

Intel 82555 manual Auto-Negotiation and Parallel Detect

Contents

82555 10/100 Mbps LAN Physical Layer Interface Product Features Revision Description Networking Silicon Contents Repeater Mode Compliance to Industry Standards IntroductionFunctional Overview Networking Silicon Architectural Overview 100 Mbps Mode MII TX Interface 10 Mbps Mode Media Independent Interface MII Yes Transmit Error From RICRepeater mode only Pin Numbers and Labels Pin Definitions Twisted Pair Ethernet TPE Pins Clock PinsMedia Independent Interface MII Pins Pin Types Media Access Control/Repeater Interface Control Pins External Bias Pins LED Pins Miscellaneous Control Pins VSS Power and Ground PinsVCC Symbol 5B Symbol Code 4B Nibble Code 100BASE-TX Adapter Mode Operation100BASE-TX Transmit Clock Generation 100BASE-TX Transmit Blocks Invalid 2 100BASE-TX Scrambler and MLT-3 Encoder 3 100BASE-TX Transmit Framing NRZ to MLT-3 Encoding Diagram Vendor Model/Type 100BASE-TX Receive BlocksTransmit Driver 100BASE-TX Collision Detection Combination Tx/T4 Auto-Negotiation Solution 100BASE-TX Link Integrity and Auto-Negotiation SolutionLink Integrity Auto-Negotiation Auto 10/100 Mbps Speed Selection Adapter Mode Addresses Networking Silicon Datasheet 10BASE-T Transmit Clock Generation 10BASE-T Functionality in Adapter Mode10BASE-T Transmit Blocks 10BASE-T Receive Blocks 10BASE-T Collision Detection 3 10BASE-T Error Detection and Reporting10BASE-T Link Integrity 10BASE-T Jabber Control Function 10BASE-T Full Duplex Networking Silicon Datasheet Connectivity Repeater ModeSpecial Repeater Features Clock Signal Example MDI Frame Structure Management Data Interface MDI Registers Bits Name Description DefaultMDI Registers 0 Transition 10BASE-T Register 1 Status Register Bit Definitions Register 2 82555 Identifier Register Bit Definitions MDI Registers 16 MDI Registers 8 100BASE-TX Register 17 82555 Special Control Bit Definitions 150 Actled Liled Register 22 Receive Symbol Error Counter Bit Definitions Auto-Negotiation Functionality Bit Setting TechnologyDescription Priority Technology Priority Parallel Detect and Auto-Negotiation Auto-Negotiation and Parallel Detect Networking Silicon Datasheet LED Descriptions Networking Silicon Datasheet Reset Reset and Miscellaneous Test ModesLoopback Scrambler Bypass Number Code Test Instruction Select Input to Tout Test Instruction Coding DC Characteristics Electrical Specifications and Timing ParametersAbsolute Maximum Ratings General Operating Conditions Total supply current 230 Leakage on analog pins 11.3.3 100BASE-TX Voltage/Current DC Characteristics Symbol Parameter Conditions Min Typ Max Units AC CharacteristicsMII Clock Specifications MII Clocks AC Timing MII Timing Parameters RXC tri-stated a Repeater Mode Timing Parameters Squelch Test Timing Parameters Transmit Packet Timing Parameters Receive Packet Timing Parameters Jabber Timing Parameters Auto-Negotiation Fast Link Pulse FLP Timing Parameters 11.4.8 10BASE-T Normal Link Pulse NLP Timing Parameters 11.4.11 X1 Clock Specifications Reset Timing Parameters X1 Clock Specifications 11.4.12 100BASE-TX Transmitter AC Specification 12.0 82555 Package Information Symbol Description Min Norm Max 10.0