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IEEE Std 802.3by-2016.pdf
IEEE Std 802.3by-2016 Front cover
Title page
Important Notices and Disclaimers Concerning IEEE Standards Documents
Participants
Introduction
Contents
IMPORTANT NOTICE
1. Introduction
1.1 Overview
1.1.3 Architectural perspectives
1.1.3.2 Compatibility interfaces
1.3 Normative references
1.4 Definitions
1.5 Abbreviations
4. Media Access Control
4.4 Specific implementations
4.4.2 MAC parameters
30. Management
30.3 Layer management for DTEs
30.3.2 PHY device managed object class
30.3.2.1 PHY device attributes
30.3.2.1.2 aPhyType
30.3.2.1.3 aPhyTypeList
30.3.2.1.5 aSymbolErrorDuringCarrier
30.5 Layer management for medium attachment units (MAUs)
30.5.1 MAU managed object class
30.5.1.1 MAU attributes
30.5.1.1.2 aMAUType
30.5.1.1.4 aMediaAvailable
30.5.1.1.15 aFECAbility
30.5.1.1.16 aFECMode
30.5.1.1.17 aFECCorrectedBlocks
30.5.1.1.18 aFECUncorrectableBlocks
30.6 Management for link Auto-Negotiation
30.6.1 Auto-Negotiation managed object class
30.6.1.1 Auto-Negotiation attributes
30.6.1.1.5 aAutoNegLocalTechnologyAbility
45. Management Data Input/Output (MDIO) Interface
45.2 MDIO Interface Registers
45.2.1 PMA/PMD registers
45.2.1.1 PMA/PMD control 1 register (Register 1.0)
45.2.1.1.3 Speed selection (1.0.13, 1.0.6, 1.0.5:2)
45.2.1.2 PMA/PMD status 1 register (Register 1.1)
45.2.1.2.3 Fault (1.1.7)
45.2.1.4 PMA/PMD speed ability (Register 1.4)
45.2.1.4.a 25G capable (1.4.11)
45.2.1.6 PMA/PMD control 2 register (Register 1.7)
45.2.1.7 PMA/PMD status 2 register (Register 1.8)
45.2.1.7.4 Transmit fault (1.8.11)
45.2.1.7.5 Receive fault (1.8.10)
45.2.1.8 PMD transmit disable register (Register 1.9)
45.2.1.10 PMA/PMD extended ability register (Register 1.11)
45.2.1.10.aa 25G extended abilities (1.11.12)
45.2.1.14 EEE capability (Register 1.16)
45.2.1.14.4a 25GBASE-R deep sleep (1.16.2)
45.2.1.14b 25G PMA/PMD extended ability register (Register 1.19)
45.2.1.14b.1 25GBASE-SR ability (1.19.4)
45.2.1.14b.2 25GBASE-CR ability (1.19.3)
45.2.1.14b.3 25GBASE-CR-S ability (1.19.2)
45.2.1.14b.4 25GBASE-KR ability (1.19.1)
45.2.1.14b.5 25GBASE-KR-S ability (1.19.0)
45.2.1.80 BASE-R PMD control register (Register 1.150)
45.2.1.81 BASE-R PMD status register (Register 1.151)
45.2.1.82 BASE-R LP coefficient update, lane 0 register (Register 1.152)
45.2.1.83 BASE-R LP status report, lane 0 register (Register 1.153)
45.2.1.84 BASE-R LD coefficient update, lane 0 register (Register 1.154)
45.2.1.85 BASE-R LD status report, lane 0 register (Register 1.155)
45.2.1.94 Single-lane PHY 10GBASE-R FEC corrected blocks counter (Register 1.172, 1.173)
45.2.1.95 Single-lane PHY 10GBASE-R FEC uncorrected blocks counter (Register 1.174, 1.175)
45.2.1.96 CAUI-4 chip-to-moduleC2M and 25GAUI C2M recommended CTLE register (Register 1.179)
45.2.1.96.1 Recommended CTLE peaking (1.179.4:1)
45.2.1.97 25GAUI C2C and lane 0 CAUI-4 chip-to-chipC2C transmitter equalization, receive direction, lane 0 register (Register 1.180)
45.2.1.97.1 Request flag (1.180.15)
45.2.1.97.2 Post-cursor request (1.180.14:12)
45.2.1.97.3 Pre-cursor request (1.180.11:10)
45.2.1.97.4 Post-cursor remote setting (1.180.9:7)
45.2.1.97.5 Pre-cursor remote setting (1.180.6:5)
45.2.1.97.6 Post-cursor local setting (1.180.4:2)
45.2.1.97.7 Pre-cursor local setting (1.180.1:0)
45.2.1.99 25GAUI C2C and lane 0 CAUI-4 chip-to-chipC2C transmitter equalization, transmit direction, lane 0 register (Register 1.184)
45.2.1.99.1 Request flag (1.184.15)
45.2.1.99.2 Post-cursor request (1.184.14:12)
45.2.1.99.3 Pre-cursor request (1.184.11:10)
45.2.1.99.4 Post-cursor remote setting (1.184.9:7)
45.2.1.99.5 Pre-cursor remote setting (1.184.6:5)
45.2.1.99.6 Post-cursor local setting (1.184.4:2)
45.2.1.99.7 Pre-cursor local setting (1.184.1:0)
45.2.1.101 RS-FEC control register (Register 1.200)
45.2.1.101.a 25G RS-FEC enable (1.200.2)
45.2.1.101.1 FEC bypass indication enable (1.200.1)
45.2.1.101.2 FEC bypass correction enable (1.200.0)
45.2.1.102 RS-FEC status register (Register 1.201)
45.2.1.102.1 PCS align status (1.201.15)
45.2.1.102.2 RS-FEC align status (1.201.14)
45.2.1.102.7 RS-FEC high SER (1.201.2)
45.2.1.102.8 FEC bypass indication ability (1.201.1)
45.2.1.102.9 FEC bypass correction ability (1.201.0)
45.2.1.103 RS-FEC corrected codewords counter (Register 1.202, 1.203)
45.2.1.104 RS-FEC uncorrected codewords counter (Register 1.204, 1.205)
45.2.1.106 RS-FEC symbol error counter lane 0 (Register 1.210, 1.211)
45.2.3 PCS registers
45.2.3.1 PCS control 1 register (Register 3.0)
45.2.3.2 PCS status 1 register (Register 3.1)
45.2.3.2.7 PCS receive link status (3.1.2)
45.2.3.4 PCS speed ability (Register 3.4)
45.2.3.4.5 25G capable (3.4.4)
45.2.3.6 PCS control 2 register (Register 3.7)
45.2.3.6.1 PCS type selection (3.7.2:0)
45.2.3.7 PCS status 2 register (Register 3.8)
45.2.3.7.3a 25GBASE-R capable (3.8.7)
45.2.3.9 EEE control and capability (Register 3.20)
45.2.3.9.2a 25GBASE-R deep sleep (3.20.11)
45.2.3.9.2b 25GBASE-R fast wake (3.20.10)
45.2.3.13 BASE-R and 10GBASE-T PCS status 1 register (Register 3.32)
45.2.3.13.1 BASE-R and 10GBASE-T receive link status (3.32.12)
45.2.3.13.4 BASE-R and 10GBASE-T PCS high BER (3.32.1)
45.2.3.13.5 BASE-R and 10GBASE-T PCS block lock (3.32.0)
45.2.3.14 BASE-R and 10GBASE-T PCS status 2 register (Register 3.33)
45.2.3.14.1 Latched block lock (3.33.15)
45.2.3.14.2 Latched high BER (3.33.14)
45.2.3.14.3 BER (3.33.13:8)
45.2.3.14.4 Errored blocks (3.33.7:0)
45.2.3.15 10/25GBASE-R PCS test pattern seed A (Registers 3.34 through 3.37)
45.2.3.16 10/25GBASE-R PCS test pattern seed B (Registers 3.38 through 3.41)
45.2.3.17 BASE-R PCS test-pattern control register (Register 3.42)
45.2.7 Auto-Negotiation registers
45.2.7.12 Backplane Ethernet, BASE-R copper status (Register 7.48)
45.2.7.12.1a RS-FEC negotiated (7.48.7)
45.2.7.12.2 Negotiated Port Type (7.48.1, 7.48.2, 7.48.3, 7.48.5, 7.48.6, 7.48.8, 7.48.9, 7.48.10, 7.48.11, 7.48.12, 7.48.13)
45.2.7.13 EEE advertisement (Register 7.60)
45.2.7.13.a 25GBASE-R EEE supported (7.60.14)
45.2.7.14 EEE link partner ability (Register 7.61)
45.5 Protocol implementation conformance statement (PICS) proforma for Clause 45, Management Data Input/Output (MDIO) interface
45.5.3 PICS proforma tables for the Management Data Input Output (MDIO) interface
45.5.3.3 PMA/PMD management functions
69. Introduction to Ethernet operation over electrical backplanes
69.1 Overview
69.1.1 Scope
69.1.2 Relationship of Backplane Ethernet to the ISO OSI reference model
69.2 Summary of Backplane Ethernet Sublayers
69.2.1 Reconciliation sublayer and media independent interfaces
69.2.3 Physical Layer signaling systems
69.3 Delay constraints
69.5 Protocol implementation conformance statement (PICS) proforma
73. Auto-Negotiation for backplane and copper cable assembly
73.2 Relationship to the ISO/IEC Open Systems Interconnection (OSI) reference model
73.3 Functional specifications
73.6 Link codeword encoding
73.6.4 Technology Ability Field
73.6.5 FEC capability
73.6.5.1 FEC resolution for 25G PHYs
73.6.5.2 FEC resolution for 10 Gb/s per lane PHYs
73.6.5.3 FEC control variables
73.7 Receive function requirements
73.7.1 DME page reception
73.7.6 Priority Resolution function
73.6 Management register requirements
73.10 State diagrams and variable definitions
73.10.1 State diagram variables
74. Forward Error Correction (FEC) sublayer for BASE-R PHYs
74.1 Overview
74.3 Relationship to other sublayers
74.4 Inter-sublayer interfaces
74.4.1a Functional block diagram for 25GBASE-R PHYs
74.5 FEC service interface
74.5.1a 25GBASE-R service primitives
74.6 Delay constraints
74.7 FEC principle of operation
74.7.4 Functions within FEC sublayer
74.7.4.1 Reverse gearbox function
74.7.4.1.2 Reverse gearbox function for 25GBASE-R, 40GBASE-R, and 100GBASE-R
74.7.4.3 FEC transmission bit ordering
74.7.4.4 FEC (2112,2080) encoder
74.7.4.5 FEC decoder
74.7.4.5.1 FEC (2112,2080) decoding
74.7.4.6 FEC receive bit ordering
74.7.4.8 FEC rapid block synchronization for EEE (optional)
74.8 FEC MDIO function mapping
74.8.1 FEC capability
74.9 BASE-R PHY test-pattern mode
74.11 Protocol implementation conformance statement (PICS) proforma for Clause 74, Forward Error Correction (FEC) sublayer for BASE-R PHYs
74.11.3 Major capabilities/options
74.11.5 FEC Requirements
78. Energy-Efficient Ethernet (EEE)
78.1 Overview
78.1.1 LPI Signaling
78.1.3 Reconciliation sublayer operation
78.1.3.3 PHY LPI operation
78.1.3.3.1 PHY LPI transmit operation
78.1.4 PHY types optionally supporting EEE
78.2 LPI mode timing parameters description
78.5 Communication link access latency
78.5.2 25 Gb/s, 40 Gb/s, and 100 Gb/s PHY extension using 25GAUI, XLAUI, or CAUI-n
90. Ethernet support for time synchronization protocols
90.1 Introduction
105. Introduction to 25 Gb/s networks
105.1 Overview
105.1.1 Scope
105.1.2 Relationship of 25 Gigabit Ethernet to the ISO OSI reference model
105.1.3 Nomenclature
105.2 Physical Layer signaling systems
105.3 Summary of 25 Gigabit Ethernet sublayers
105.3.1 Reconciliation Sublayer (RS) and 25 Gigabit Media Independent Interface (25GMII)
105.3.2 Physical Coding Sublayer (PCS)
105.3.3 Forward Error Correction (FEC) sublayer
105.3.4 Physical Medium Attachment (PMA) sublayer
105.3.5 Physical Medium Dependent (PMD) sublayer
105.3.6 Auto-Negotiation (AN)
105.3.7 Management interface (MDIO/MDC)
105.3.8 Management
105.4 Service interface specification method and notation
105.4.1 Inter-sublayer service interface
105.4.2 Instances of the Inter-sublayer service interface
105.4.3 Semantics of inter-sublayer service interface primitives
105.4.3.1 IS_UNITDATA.request
105.4.3.1.1 Semantics of the service primitive
105.4.3.1.2 When generated
105.4.3.1.3 Effect of receipt
105.4.3.2 IS_UNITDATA.indication
105.4.3.2.1 Semantics of the service primitive
105.4.3.2.2 When generated
105.4.3.2.3 Effect of receipt
105.4.3.3 IS_SIGNAL.indication
105.4.3.3.1 Semantics of the service primitive
105.4.3.3.2 When generated
105.4.3.3.3 Effect of receipt
105.4.3.4 IS_TX_MODE.request
105.4.3.4.1 Semantics of the service primitive
105.4.3.4.2 When generated
105.4.3.4.3 Effect of receipt
105.4.3.5 IS_RX_MODE.request
105.4.3.5.1 Semantics of the service primitive
105.4.3.5.2 When generated
105.4.3.5.3 Effect of receipt
105.4.3.6 IS_RX_LPI_ACTIVE.request
105.4.3.6.1 Semantics of the service primitive
105.4.3.6.2 When generated
105.4.3.6.3 Effect of receipt
105.4.3.7 IS_ENERGY_DETECT.indication
105.4.3.7.1 Semantics of the service primitive
105.4.3.7.2 When generated
105.4.3.7.3 Effect of receipt
105.4.3.8 IS_RX_TX_MODE.indication
105.4.3.8.1 Semantics of the service primitive
105.4.3.8.2 When generated
105.4.3.8.3 Effect of receipt
105.5 Delay constraints
105.6 State diagrams
105.7 Protocol implementation conformance statement (PICS) proforma
106. Reconciliation Sublayer (RS) and Media Independent Interface (25GMII) for 25 Gb/s operation
106.1 Overview
106.1.1 Summary of major concepts
106.1.2 Application
106.1.3 Rate of operation
106.1.4 Delay constraints
106.1.5 Allocation of functions
106.1.6 25GMII structure
106.1.7 Mapping of 25GMII signals to PLS service primitives
106.1.7.1 Mapping of PLS_DATA.request
106.1.7.2 Mapping of PLS_DATA.indication
106.1.7.3 Mapping of PLS_CARRIER.indication
106.1.7.4 Mapping of PLS_SIGNAL.indication
106.1.7.5 Mapping of PLS_DATA_VALID.indication
106.2 25GMII data stream
106.3 25GMII functional specifications
106.4 LPI Assertion and Detection
106.5 Protocol implementation conformance statement (PICS) proforma for Clause 106 Reconciliation Sublayer (RS) and Media Independent Interface (25GMII) for 25 Gb/s operation
106.5.1 Introduction
106.5.2 Identification
106.5.2.1 Implementation identification
106.5.2.2 Protocol summary
106.5.2.3 Major capabilities/options
106.5.3 PICS proforma Tables for Reconciliation Sublayer and 25 Gigabit Media Independent Interface
106.5.3.1 General
106.5.3.2 Mapping of PLS service primitives
106.5.3.3 25GMII signal functional specifications.
107. Physical Coding Sublayer (PCS) for 64B/66B, type 25GBASE-R
107.1 Overview
107.1.1 Scope
107.1.2 Relationship of 25GBASE-R to other standards
107.1.3 Summary of 25GBASE-R sublayers
107.1.3.1 Physical Coding Sublayer (PCS)
107.1.4 Inter-sublayer interfaces
107.1.4.1 PCS service interface (25GMII)
107.1.4.2 Physical Medium Attachment (PMA) service interface
107.2 Functions within the PCS
107.2.1 Notation conventions
107.2.2 Transmission order
107.2.3 Test-pattern generator
107.3 LPI
107.3 Delay constraints
107.4 Support for Auto-Negotiation
107.5 Protocol implementation conformance statement (PICS) proforma for Clause 107, Physical Coding Sublayer (PCS) for 64B/66B, type 25GBASE-R
107.5.1 Introduction
107.5.2 Identification
107.5.2.1 Implementation identification
107.5.2.2 Protocol summary
107.5.3 Major capabilities/options
107.5.4 25G PCS
107.5.4.1 Clause 49 functionality
107.5.4.2 Test-pattern generator
107.5.4.3 LPI
107.5.4.4 Delay Constraints
108. Reed-Solomon Forward Error Correction (RS-FEC) sublayer for 25GBASE-R PHYs
108.1 Overview
108.1.1 Scope
108.1.2 Position of RS-FEC in the 25GBASE-R PHY sublayers
108.2 FEC service interface
108.3 PMA compatibility
108.4 Delay constraints
108.5 Functions within the 25GBASE-R RS-FEC sublayer
108.5.1 Functional block diagram
108.5.2 Transmit function
108.5.2.1 Block synchronization
108.5.2.2 Rate compensation for codeword markers in the transmit direction
108.5.2.3 64B/66B to 256B/257B transcoder
108.5.2.4 Codeword marker insertion
108.5.2.5 Reed-Solomon encoder
108.5.2.6 Codeword serialization
108.5.2.7 RS-FEC encoding for rapid codeword lock (EEE deep sleep)
108.5.3 Receive function
108.5.3.1 Codeword marker lock
108.5.3.2 Reed-Solomon decoder
108.5.3.3 Codeword monitor
108.5.3.4 Codeword marker removal
108.5.3.5 256B/257B to 64B/66B transcoder
108.5.3.6 Rate compensation for codeword markers in the receive direction
108.5.3.7 Rapid codeword lock for EEE deep sleep
108.5.3.8 Receive bit ordering
108.5.4 Detailed functions and state diagrams
108.5.4.1 State diagram conventions
108.5.4.2 State variables
108.5.4.3 Functions
108.5.4.4 Counters
108.5.4.5 Timers
108.5.4.6 State diagrams
108.6 25GBASE-R RS-FEC MDIO function mapping
108.6.1 FEC_bypass_correction_enable
108.6.2 FEC_bypass_indication_enable
108.6.3 25G RS-FEC Enable
108.6.4 FEC_bypass_correction_ability
108.6.5 FEC_bypass_indication_ability
108.6.6 FEC_high_ser
108.6.7 FEC_corrected_cw_counter
108.6.8 FEC_uncorrected_cw_counter
108.6.9 FEC_symbol_error_counter_0
108.6.10 align_status
108.7 Protocol implementation conformance statement (PICS) proforma for Clause 108, Reed-Solomon Forward Error Correction (RS-FEC) sublayer for 25GBASE-R PHYs
108.7.1 Introduction
108.7.2 Identification
108.7.2.1 Implementation identification
108.7.2.2 Protocol summary
108.7.3 Major capabilities/options
108.7.4 PICS proforma tables for Reed-Solomon Forward Error Correction (RS-FEC) sublayer for 25GBASE-R PHYs
108.7.4.1 Transmit function
108.7.4.2 Receive function
108.7.4.3 State diagrams
108.7.4.4 MDIO function mapping
109. Physical Medium Attachment (PMA) sublayer, type 25GBASE-R
109.1 Overview
109.1.1 Scope
109.1.2 Position of the PMA in the 25GBASE-R sublayers
109.1.3 Summary of functions
109.1.4 PMA sublayer positioning
109.2 PMA service interface
109.3 Service interface below PMA
109.4 Functions within the PMA
109.4.1 Signal drivers
109.4.2 PMA local loopback mode
109.4.3 PMA remote loopback mode
109.4.4 PMA test patterns
109.4.4.1 Transmit PRBS31 test-pattern generation
109.4.4.2 Receive PRBS31 test-pattern generation
109.4.4.3 Transmit PRBS31 test-pattern checking
109.4.4.4 Receive PRBS31 test-pattern checking
109.4.4.5 Transmit PRBS9 test-pattern generation
109.4.4.6 Receive PRBS9 test-pattern generation
109.4.4.7 Transmit square wave test-pattern generation
109.4.5 Energy Efficient Ethernet for 25GAUI
109.5 Delay constraints
109.6 PMA MDIO function mapping
109.7 Protocol implementation conformance statement (PICS) proforma for Clause 109, Physical Medium Attachment (PMA) sublayer, type 25GBASE-R
109.7.1 Introduction
109.7.2 Identification
109.7.2.1 Implementation identification
109.7.2.2 Protocol summary
109.7.3 PICS proforma tables for the 25GBASE-R PMA Sublayer
109.7.4 Major capabilities/options
109.7.4.1 PMA functions
109.7.4.2 PMA characteristics
110. Physical Medium Dependent (PMD) sublayer and baseband medium, type 25GBASE-CR and 25GBASE-CR-S
110.1 Overview
110.2 PMD service interface
110.3 PCS requirements for Auto-Negotiation (AN) service interface
110.4 Delay constraints
110.5 PMD MDIO function mapping
110.6 FEC modes
110.7 PMD functional specifications
110.7.1 Link block diagram
110.7.2 PMD transmit function
110.7.3 PMD receive function
110.7.4 Global PMD signal detect function
110.7.5 Global PMD transmit disable function
110.7.6 Loopback mode
110.7.7 PMD fault function
110.7.8 PMD transmit fault function
110.7.9 PMD receive fault function
110.7.10 PMD control function
110.8 Electrical characteristics
110.8.1 Signal levels
110.8.2 Signal paths
110.8.3 Transmitter characteristics
110.8.4 Receiver characteristics
110.8.4.1 Receiver input amplitude tolerance
110.8.4.2 Receiver interference tolerance test
110.8.4.2.1 Test setup
110.8.4.2.2 Test channel
110.8.4.2.3 Test channel calibration
110.8.4.2.4 Pattern generator and noise injection
110.8.4.2.5 Test procedure
110.8.4.3 Receiver jitter tolerance
110.8.4.4 Signaling rate range
110.9 Channel characteristics
110.10 Cable assembly characteristics
110.10.1 Characteristic impedance and reference impedance
110.10.2 Cable assembly insertion loss
110.10.3 Cable assembly differential return loss
110.10.4 Differential to common-mode return loss
110.10.5 Differential to common-mode conversion loss
110.10.6 Common-mode to common-mode return loss
110.10.7 Cable assembly Channel Operating Margin
110.10.7.1 Channel signal and crosstalk path calculations
110.10.7.1.1 Channel signal path
110.10.7.1.2 Channel crosstalk paths
110.10.7.2 Signal and crosstalk paths used in calculation of COM
110.10.7.2.1 SFP28 to SFP28
110.10.7.2.2 QSFP28 to SFP28
110.10.7.2.3 SFP28 to QSFP28
110.10.7.2.4 QSFP28 to QSFP28
110.11 MDI specification
110.11.1 Single-lane MDI connectors
110.12 Environmental specifications
110.13 Protocol implementation conformance statement (PICS) proforma for Clause 110, Physical Medium Dependent (PMD) sublayer and baseband medium, type 25GBASE-CR and 25GBASE-CR-S
110.13.1 Introduction
110.13.2 Identification
110.13.2.1 Implementation identification
110.13.2.2 Protocol summary
110.13.3 Major capabilities/options
110.13.4 PICS proforma tables for Physical Medium Dependent (PMD) sublayer and baseband medium, type 25GBASE-CR and 25GBASE-CR-S
110.13.4.1 PMD functional specifications
110.13.4.2 Management functions
110.13.4.3 Transmitter specifications
110.13.4.4 Receiver specifications
110.13.4.5 Cable assembly specifications
110.13.4.6 MDI connector specifications
110.13.4.7 Environmental specifications
111. Physical Medium Dependent (PMD) sublayer and baseband medium, type 25GBASE-KR and 25GBASE-KR-S
111.1 Overview
111.2 PMD service interface
111.3 PCS requirements for Auto-Negotiation (AN) service interface
111.4 Delay constraints
111.5 PMD MDIO function mapping
111.6 FEC modes
111.7 PMD functional specifications
111.7.1 Link block diagram
111.7.2 PMD transmit function
111.7.3 PMD receive function
111.7.4 Global PMD signal detect function
111.7.5 Global PMD transmit disable function
111.7.6 Loopback mode
111.7.7 PMD fault function
111.7.8 PMD transmit fault function
111.7.9 PMD receive fault function
111.7.10 PMD control function
111.8 Electrical characteristics
111.8.1 MDI
111.8.2 Transmitter characteristics
111.8.3 Receiver characteristics
111.8.3.1 Receiver interference tolerance
111.8.3.2 Receiver jitter tolerance
111.9 Channel characteristics
111.9.1 25GBASE-KR channel
111.9.2 25GBASE-KR-S channel
111.10 Environmental specifications
111.11 Protocol implementation conformance statement (PICS) proforma for Clause 111, Physical Medium Dependent (PMD) sublayer and baseband medium, type 25GBASE-KR and 25GBASE-KR-S
111.11.1 Introduction
111.11.2 Identification
111.11.2.1 Implementation identification
111.11.2.2 Protocol summary
111.11.3 Major capabilities/options
111.11.4 PICS proforma tables for Physical Medium Dependent (PMD) sublayer and baseband medium, type 25GBASE-KR and 25GBASE-KR-S
111.11.4.1 Functional specifications
111.11.4.2 Transmitter characteristics
111.11.4.3 Receiver characteristics
111.11.4.4 Channel characteristics
111.11.4.5 Environmental specifications
112. Physical Medium Dependent (PMD) sublayer and medium, type 25GBASE-SR
112.1 Overview
112.1.1 Bit error ratio
112.2 Physical Medium Dependent (PMD) service interface
112.3 Delay constraints
112.4 PMD MDIO function mapping
112.5 PMD functional specifications
112.5.1 PMD block diagram
112.5.2 PMD transmit function
112.5.3 PMD receive function
112.5.4 PMD global signal detect function
112.5.5 PMD reset function
112.5.6 PMD global transmit disable function (optional)
112.5.7 PMD fault function (optional)
112.5.8 PMD transmit fault function (optional)
112.5.9 PMD receive fault function (optional)
112.6 PMD to MDI optical specifications for 25GBASE-SR
112.6.1 25GBASE-SR transmitter optical specifications
112.6.2 25GBASE-SR receive optical specifications
112.6.3 25GBASE-SR illustrative link power budget
112.7 Definition of optical parameters and measurement methods
112.7.1 Test patterns for optical parameters
112.7.2 Center wavelength and spectral width
112.7.3 Average optical power
112.7.4 Optical Modulation Amplitude (OMA)
112.7.5 Transmitter and dispersion eye closure (TDEC)
112.7.6 Extinction ratio
112.7.7 Transmitter optical waveform (transmit eye)
112.7.8 Stressed receiver sensitivity
112.8 Safety, installation, environment, and labeling
112.8.1 General safety
112.8.2 Laser safety
112.8.3 Installation
112.8.4 Environment
112.8.5 Electromagnetic emission
112.8.6 Temperature, humidity, and handling
112.8.7 PMD labeling requirements
112.9 Fiber optic cabling model
112.10 Characteristics of the fiber optic cabling (channel)
112.10.1 Optical fiber cable
112.10.2 Optical fiber connection
112.10.2.1 Connection insertion loss
112.10.2.2 Maximum discrete reflectance
112.10.3 Medium Dependent Interface (MDI)
112.11 Protocol implementation conformance statement (PICS) proforma for Clause 112, Physical Medium Dependent (PMD) sublayer and medium, type 25GBASE-SR
112.11.1 Introduction
112.11.2 Identification
112.11.2.1 Implementation identification
112.11.2.2 Protocol summary
112.11.3 Major capabilities/options
112.11.4 PICS proforma tables for Physical Medium Dependent (PMD) sublayer and medium, type 25GBASE-SR
112.11.4.1 PMD functional specifications
112.11.4.2 Management functions
112.11.4.3 PMD to MDI optical specifications for 25GBASE-SR
112.11.4.4 Optical measurement methods
112.11.4.5 Environmental specifications
112.11.4.6 Characteristics of the fiber optic cabling and MDI
Annex 4A (normative) Simplified full duplex media access control
4A.4 Specific implementations
4A.4.2 MAC parameters
Annex 31B (normative) MAC Control PAUSE operation
Annex 93A (normative) Specification methods for electrical channels
93A.1 Channel Operating Margin
93A.1.4 Filters
93A.2 Test channel calibration using COM
Annex 109A (normative) Chip-to-chip 25 Gigabit Attachment Unit Interface (25GAUI C2C)
109A.1 Overview
109A.2 25GAUI C2C compliance point definition
109A.3 25GAUI C2C electrical characteristics
109A.3.1 25GAUI C2C transmitter characteristics
109A.3.2 25GAUI C2C receiver characteristics
109A.3.3 Optional EEE operation
109A.4 25GAUI C2C channel characteristics
109A.5 Protocol implementation conformance statement (PICS) proforma for Annex 109A, Chip-to-chip 25 Gigabit Attachment Unit Interface (25GAUI C2C)
109A.5.1 Introduction
109A.5.2 Identification
109A.5.2.1 Implementation identification
109A.5.2.2 Protocol summary
109A.5.3 Major capabilities/options
109A.5.4 PICS proforma tables for chip-to-chip 25 Gigabit Attachment Unit Interface (25GAUI C2C)
109A.5.4.1 Transmitter
109A.5.4.2 Receiver
109A.5.4.3 Channel
Annex 109B (normative) Chip-to-module 25 Gigabit Attachment Unit Interface (25GAUI C2M)
109B.1 Overview
109B.1.1 Bit error ratio
109B.2 25GAUI C2M compliance point definitions
109B.3 25GAUI C2M electrical characteristics
109B.3.1 25GAUI C2M host output characteristics
109B.3.2 25GAUI C2M module output characteristics
109B.3.2.1 25GAUI C2M module output eye opening
109B.3.2.1.1 Eye opening using measurement method A
109B.3.2.1.2 Eye opening using measurement method B
109B.3.3 25GAUI C2M host input characteristics
109B.3.4 25GAUI C2M module input characteristics
109B.3.4.1 Module stressed input test using measurement method A
109B.3.4.2 Module stressed input test using measurement method B
109B.4 25GAUI C2M measurement methodology
109B.4.1 Eye width, eye height, and eye closure measurement method B
109B.5 Protocol implementation conformance statement (PICS) proforma for Annex 109B, Chip-to-module 25 Gigabit Attachment Unit Interface (25GAUI C2M)
109B.5.1 Introduction
109B.5.2 Identification
109B.5.2.1 Implementation identification
109B.5.2.2 Protocol summary
109B.5.3 Major capabilities/options
109B.5.4 PICS proforma tables for chip-to-module 25 Gigabit Attachment Unit Interface (25GAUI C2M)
109B.5.3.1 Host output
109B.5.4.2 Module output
109B.5.4.3 Host input
109B.5.4.4 Module input
Annex 109C (informative) 25GBASE-R PMA sublayer partitioning examples
Annex 110A (informative) TP0 and TP5 test point parameters and channel characteristics for 25GBASE-CR and 25GBASE-CR-S
110A.1 Overview
110A.2 Transmitter characteristics at TP0
110A.3 Receiver characteristics at TP5
110A.4 Transmitter and receiver differential printed circuit board trace loss
110A.5 Channel insertion loss
110A.6 Channel return loss
110A.7 Channel Operating Margin (COM)
Annex 110B (normative) Test fixtures for 25GBASE-CR, 25GBASE-CR-S, and 25GAUI C2M
110B.1 Test fixtures
110B.1.1 SFP28 TP2 or TP3 test fixture
110B.1.2 SFP28 Cable assembly test fixture
110B.1.3 SFP28 Mated test fixtures
110B.1.3.1 Mated test fixtures differential insertion loss
110B.1.3.2 Mated test fixtures differential return loss
110B.1.3.3 Mated test fixtures common-mode conversion insertion loss
110B.1.3.4 Mated test fixtures common-mode return loss
110B.1.3.5 Mated test fixtures common-mode to differential mode return loss
110B.1.3.7 Mated test fixtures integrated near-end crosstalk noise
110B.2 Protocol implementation conformance statement (PICS) proforma for Annex 110B, Test fixtures for 25GBASE-CR, 25GBASE-CR-S, and 25GAUI C2M
110B.2.1 Introduction
110B.2.2 Identification
110B.2.2.1 Implementation identification
110B.2.2.2 Protocol summary
110B.2.3 Major capabilities/options
110B.2.4 PICS proforma tables for test fixtures for 25GBASE-CR, 25GBASE-CR-S, and 25GAUI C2M
Annex 110C (informative) Host and cable assembly form factors for 25GBASE-CR and 25GBASE-CR-S PHYs
110C.1 Overview
110C.2 Host form factors
110C.2.1 SFP28 host form factor
110C.2.2 QSFP28 host form factor
110C.3 Cable assembly form factors
110C.3.1 SFP28 to SFP28 cable assembly form factor
110C.3.2 QSFP28 to QSFP28 cable assembly form factor
110C.3.3 QSFP28 to 4×SFP28 cable assembly form factor
Back cover
IEEE Standard for Ethernet
Amendment 2: Media Access Control Parameters,
Physical Layers, and Management Parameters for
25 Gb/s Operation
IEEE Computer Society
LAN/MAN Standards Committee
Sponsored by the
IEEE
3 Park Avenue
New York, NY 10016-5997
USA
IEEE Std 802.3by™-2016
(Amendment to
IEEE Std 802.3™-2015
as amended by
IEEE Std 802.3bw™-2015)
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IEEE 802.3by™-2016
(Amendment to
IEEE Std 802.3™-2015
as amended by
IEEE Std 802.3bw™-2015)
IEEE Standard for Ethernet
Amendment 2: Media Access Control Parameters,
Physical Layers, and Management Parameters for
25 Gb/s Operation
Sponsor
LAN/MAN Standards Committee
of the
IEEE Computer Society
Approved 30 June 2016
IEEE-SA Standards Board
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Abstract: This amendment to IEEE Std 802.3-2015 adds Physical Layer (PHY) specifications and
management parameters for 25 Gb/s operation over twinaxial copper cabling (25GBASE-CR and
25GBASE-CR-S), electrical backplanes (25GBASE-KR and 25GBASE-KR-S), and multimode
fiber (25GBASE-SR). This amendment also specifies a 25 Gigabit Attachment Unit Interface
(25GAUI) and optional Energy Efficient Ethernet (EEE).
Keywords: 25 Gigabit Ethernet, 25GAUI, 25GBASE-CR, 25GBASE-CR-S, 25GBASE-KR,
25GBASE-KR-S, 25GBASE-SR, 25GMII, Auto-Negotiation (AN), Backplane Ethernet, Energy
Efficient Ethernet (EEE), Ethernet, Forward Error Correction (FEC), IEEE 802®, IEEE 802.3™,
IEEE 802.3by™, multimode fiber (MMF), Physical Coding Sublayer (PCS), Physical Medium
Attachment (PMA) sublayer, Physical Medium Dependent (PMD) sublayer, Reconciliation
Sublayer (RS)
The Institute of Electrical and Electronics Engineers, Inc.
3 Park Avenue, New York, NY 10016-5997, USA
Copyright © 2016 by The Institute of Electrical and Electronics Engineers, Inc.
All rights reserved. Published 29 July 2016. Printed in the United States of America.
IEEE and 802 are registered trademarks in the U.S. Patent & Trademark Office, owned by The Institute of
Electrical and Electronics Engineers, Incorporated.
Print:
PDF:
ISBN 978-1-5044-2169-0
ISBN 978-1-5044-2170-6
STD21020
STDPD21020
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Participants
The following individuals were officers and members of the IEEE 802.3 Working Group at the beginning of
the IEEE P802.3by Working Group ballot. Individuals may have not voted, voted for approval, disapproval
or abstained on this standard.
David J. Law, IEEE 802.3 Working Group Chair
Adam Healey, IEEE 802.3 Working Group Vice Chair
Peter Anslow, IEEE 802.3 Working Group Secretary
Steven B. Carlson, IEEE 802.3 Working Group Executive Secretary
Valerie Maguire, IEEE 802.3 Working Group Treasurer
Mark Nowell, IEEE P802.3by 25 Gb/s Ethernet Task Force Chair
Matthew Brown, IEEE P802.3by 25 Gb/s Ethernet Task Force Editor-in-Chief
John Abbott
David Abramson
Shadi Abughazaleh
Faisal Ahmad
Dale Amason
J. Michael Andrewartha
Oleksandr Babenko
Kwang-Hyun Baek
Amrik Bains
Koussalya Balasubramanian
Thananya Baldwin
Denis Beaudoin
Christian Beia
Yakov Belopolsky
Michael Bennett
Vipul Bhatt
William Bliss
Brad Booth
Martin Bouda
David Brandt
Ralf-Peter Braun
Theodore Brillhart
Paul Brooks
David Brown
Thomas Brown
Phillip Brownlee
Juan-Carlos Calderon
J. Martin Carroll
Clark Carty
Mandeep Chadha
David Chalupsky
Jacky Chang
Xin Chang
David Chen
Wheling Cheng
Ahmad Chini
Golam Choudhury
Keng Hua Chuang
Peter Cibula
Christopher R. Cole
Keith Conroy
Eugene Dai
Shaoan Dai
John D'Ambrosia
Mike Darling
Yair Darshan
Piers J. G. Dawe
Fred Dawson
Ian Dedic
Christopher Diminico
Thuyen Dinh
Curtis Donahue
Dan Dove
Michael Dudek
Nick Duer
David Dwelley
Frank Effenberger
Hesham Elbakoury
David Estes
John Ewen
Josef Faller
Shahar Feldman
German Feyh
Alan Flatman
Howard Frazier
Richard Frosch
Andrew Gardner
Mike Gardner
Ali Ghiasi
Joel Goergen
Zhigang Gong
Steven Gorshe
James Graba
Robert Grow
Mark Gustlin
Marek Hajduczenia
Bernie Hammond
Takehiro Hayashi
David Hess
Yasuo Hidaka
Riu Hirai
Thomas Hogenmueller
Brian Holden
Rita Horner
Bernd Horrmeyer
Victor Hou
Liang-wei Huang
Yasuhiro Hyakutake
Scott Irwin
Kazuhiko Ishibe
Hideki Isono
Tom Issenhuth
Kenneth Jackson
Andrew Jimenez
Chad Jones
Peter Jones
Antony Joseph
Manabu Kagami
Upen Kareti
Keisuke Kawahara
Yasuaki Kawatsu
Michael Kelsen
Yongbum Kim
Jonathan King
Scott Kipp
Michael Klempa
Curtis Knittle
Shigeru Kobayashi
Keisuke Kojima
Paul Kolesar
Tom Kolze
Glen Kramer
Hans Lackner
Brett Lane
Jeff Lapak
Efstathios Larios
Mark Laubach
Greg Le Cheminant
Arthur Lee
David Lewis
Jon Lewis
Lei Li
Mike Peng Li
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Shaohua Li
Thomas Lichtenegger
Ru Jian Lin
Robert Lingle
James liu
Zhenyu Liu
William Lo
Miklos Lukacs
Kent Lusted
Jeffery Maki
James Malkemus
Yonatan Malkiman
Edwin Mallette
Arthur Marris
Chris Mash
Kirsten Matheus
Erdem Matoglu
Laurence Matola
Brett Mcclellan
Thomas Mcdermott
John McDonough
Richard Mei
Richard Mellitz
Bryan Moffitt
Leo Montreuil
Paul Mooney
Andy Moorwood
Thomas Mueller
Ron Muir
Dale Murray
Henry Muyshondt
Edward Nakamoto
Gary Nicholl
Paul Nikolich
Kevin Noll
Ronald Nordin
David Ofelt
Ichiro Ogura
Tom Palkert
Hui Pan
Sujan Pandey
Sesha Panguluri
Carlos Pardo
Moon Park
Petar Pepeljugoski
Gerald Pepper
Ruben Perez De Aranda Alonso
Michael Peters
John Petrilla
Rick Pimpinella
Neven Pischl
Rainer Poehmerer
William Powell
Richard Prodan
Rick Rabinovich
Saifur Rahman
Adee Ran
Ram Rao
Alon Regev
Duane Remein
Victor Renteria
Michael Ressl
Poldi (Pavlick) Rimboim
Martin Rossbach
Christopher Roth
Salvatore Rotolo
Hisaya Sakamoto
Vineet Salunke
Sam Sambasivan
Yasuo Sasaki
Fred Schindler
Stefan Schneele
Peter Scruton
Alexander Seiger
Naoshi Serizawa
Megha Shanbhag
Masood Shariff
Stephen J. Shellhammer
Bazhong Shen
Mizuki Shirao
Kapil Shrikhande
Jeff Slavick
Scott Sommers
Yoshiaki Sone
Xiaolu Song
Tom Souvignier
Bryan Sparrowhawk
Edward Sprague
Peter Stassar
Leonard Stencel
Robert Stone
Steve Swanson
Andre Szczepanek
William Szeto
Bharat Tailor
Akio Tajima
Takayuki Tajima
Tomoo Takahara
Satoshi Takahashi
Kiyoto Takahata
Alexander Tan
Toshiki Tanaka
Mehmet Tazebay
Brian Teipen
Geoffrey Thompson
Alan Tipper
Pirooz Tooyserkani
Nathan Tracy
David Tremblay
Albert Tretter
Stephen Trowbridge
Wen-Cheng Tseng
Yoshihiro Tsukamoto
Mike Tu
Alan Ugolini
Ed Ulrichs
Sterling A. Vaden
Stefano Valle
Paul Vanderlaan
Robert Wagner
Robert Wang
Roy Wang
Tongtong Wang
Xiaofeng Wang
Xinyuan Wang
Zhong Feng Wang
Markus Weber
Brian Welch
Yang Wen
Matthias Wendt
Oded Wertheim
Martin White
Natalie Wienckowski
Ludwig Winkel
Peter Wu
Yu Xu
Lennart Yseboodt
Ting-Fa Yu
Liquan Yuan
Hayato Yuki
Garold Yurko
Andrew Zambell
Jin Zhang
Yan Zhuang
George Zimmerman
Helge Zinner
Pavel Zivny
Gaoling Zou
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