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

 

 

 

 

 

 

 

 

preamble suppressed

 

 

 

 

 

 

 

 

5

Auto-Negotiation

1

= Auto-Negotiation process completed

0

RO

 

Complete

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

 

 

 

 

 

 

 

 

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

 

 

 

 

 

 

 

 

 

 

 

 

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.

 

 

 

 

 

 

 

30

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