IEEE Standard for Ethernet SECTION SIX · 2016. 11. 14. · 78.4.3.1 Transmitting link partner’s state change procedure across a link ... 78.4.3.2 Receiving link partner’s state

IEEE Standard for Ethernet

SECTION SIX

This section includes Clause 78 through Clause 95 and Annex 83A through Annex 93C.

Contents

78. Energy-Efficient Ethernet (EEE) .......................................................................................................... 32

78.1 Overview..................................................................................................................................... 3278.1.1 LPI Signaling ...................................................................................................................... 32

78.1.1.1 Reconciliation sublayer service interfaces................................................................ 3378.1.1.2 Responsibilities of LPI Client................................................................................... 33

78.1.2 LPI Client service interface ................................................................................................ 3378.1.2.1 LP_IDLE.request ...................................................................................................... 34

78.1.2.1.1 Function .......................................................................................................... 3478.1.2.1.2 Semantics of the service primitive.................................................................. 3478.1.2.1.3 When generated .............................................................................................. 3478.1.2.1.4 Effect of receipt .............................................................................................. 34

78.1.2.2 LP_IDLE.indication.................................................................................................. 3478.1.2.2.1 Function .......................................................................................................... 3478.1.2.2.2 Semantics of the service primitive.................................................................. 3478.1.2.2.3 When generated .............................................................................................. 3478.1.2.2.4 Effect of receipt .............................................................................................. 35

78.1.3 Reconciliation sublayer operation ...................................................................................... 3578.1.3.1 RS LPI assert function .............................................................................................. 3578.1.3.2 LPI detect function.................................................................................................... 3678.1.3.3 PHY LPI operation ................................................................................................... 36

78.1.3.3.1 PHY LPI transmit operation ........................................................................... 36

1Copyright © 2015 IEEE. All rights reserved.

78.1.3.3.2 PHY LPI receive operation............................................................................. 3778.1.4 PHY types optionally supporting EEE ............................................................................... 38

78.2 LPI mode timing parameters description.................................................................................... 3978.3 Capabilities Negotiation ............................................................................................................. 4078.4 Data Link Layer Capabilities ...................................................................................................... 40

78.4.1 Data Link Layer capabilities timing requirements ............................................................. 4178.4.2 Control state diagrams ........................................................................................................ 42

78.4.2.1 Conventions .............................................................................................................. 4278.4.2.2 Constants................................................................................................................... 4278.4.2.3 Variables ................................................................................................................... 4278.4.2.4 Functions................................................................................................................... 4678.4.2.5 State diagrams........................................................................................................... 46

78.4.3 State change procedure across a link .................................................................................. 5078.4.3.1 Transmitting link partner’s state change procedure across a link............................. 5178.4.3.2 Receiving link partner’s state change procedure across a link ................................. 52

78.5 Communication link access latency............................................................................................ 5378.5.1 10 Gb/s PHY extension using XGXS ................................................................................. 5578.5.2 40 Gb/s and 100 Gb/s PHY extension using XLAUI or CAUI-n....................................... 55

78.6 Protocol implementation conformance statement (PICS) proforma for EEE Data Link Layer Capabilities ....................................................................................................................... 56

78.6.1 Introduction......................................................................................................................... 5678.6.2 Identification ....................................................................................................................... 56

78.6.2.1 Implementation identification................................................................................... 5678.6.2.2 Protocol summary ..................................................................................................... 56

78.6.3 Major capabilities/options................................................................................................... 5778.6.4 DLL requirements............................................................................................................... 57

79. IEEE 802.3 Organizationally Specific Link Layer Discovery Protocol (LLDP) type, length, and value (TLV) information elements ....................................................................................................... 58

79.1 Overview..................................................................................................................................... 5879.1.1 IEEE 802.3 LLDP frame format......................................................................................... 58

79.1.1.1 Destination Address field.......................................................................................... 5979.1.1.2 Source Address field ................................................................................................. 5979.1.1.3 Length/Type field ..................................................................................................... 5979.1.1.4 LLDPDU field .......................................................................................................... 5979.1.1.5 Pad field .................................................................................................................... 5979.1.1.6 Frame Check Sequence field .................................................................................... 59

79.2 Requirements of the IEEE 802.3 Organizationally Specific TLV set ........................................ 5979.3 IEEE 802.3 Organizationally Specific TLVs ............................................................................. 60

79.3.1 MAC/PHY Configuration/Status TLV ............................................................................... 6079.3.1.1 Auto-negotiation support/status ................................................................................ 6079.3.1.2 PMD auto-negotiation advertised capability field .................................................... 6079.3.1.3 Operational MAU type ............................................................................................ 6179.3.1.4 MAC/PHY Configuration/Status TLV usage rules .................................................. 61

79.3.2 Power Via MDI TLV.......................................................................................................... 6179.3.2.1 MDI power support................................................................................................... 6279.3.2.2 PSE power pair ......................................................................................................... 6279.3.2.3 Power class ............................................................................................................... 6279.3.2.4 Requested power type/source/priority ...................................................................... 62

79.3.2.4.1 Power type ...................................................................................................... 6279.3.2.4.2 Power source................................................................................................... 6379.3.2.4.3 Power priority ................................................................................................. 63

79.3.2.5 PD requested power value ........................................................................................ 63


79.3.2.6 PSE allocated power value ....................................................................................... 6479.3.2.7 Power Via MDI TLV usage rules ............................................................................. 64

79.3.3 Link Aggregation TLV (deprecated) .................................................................................. 6479.3.3.1 Aggregation status .................................................................................................... 6579.3.3.2 Aggregated port ID ................................................................................................... 6579.3.3.3 Link Aggregation TLV usage rules .......................................................................... 65

79.3.4 Maximum Frame Size TLV................................................................................................ 6579.3.4.1 Maximum frame size ................................................................................................ 6679.3.4.2 Maximum Frame Size TLV usage rules ................................................................... 66

79.3.5 EEE TLV ............................................................................................................................ 6779.3.5.1 Transmit Tw.............................................................................................................. 6779.3.5.2 Receive Tw ............................................................................................................... 6779.3.5.3 Fallback Tw .............................................................................................................. 6779.3.5.4 Echo Transmit and Receive Tw................................................................................ 6879.3.5.5 EEE TLV usage rules ............................................................................................... 68

79.3.6 EEE Fast Wake TLV .......................................................................................................... 6879.3.6.1 Transmit fast wake.................................................................................................... 6879.3.6.2 Receive fast wake ..................................................................................................... 6879.3.6.3 Echo of Transmit fast wake and Receive fast wake ................................................. 6979.3.6.4 EEE Fast Wake TLV usage rules ............................................................................. 69

79.4 IEEE 802.3 Organizationally Specific TLV selection management .......................................... 6979.4.1 IEEE 802.3 Organizationally Specific TLV selection variable/LLDP Configuration

managed object class cross reference ................................................................................. 6979.4.2 IEEE 802.3 Organizationally Specific TLV/LLDP Local and Remote System group

managed object class cross references................................................................................ 6979.5 Protocol implementation conformance statement (PICS) proforma for IEEE 802.3

Organizationally Specific Link Layer Discovery Protocol (LLDP) type, length, and value (TLV) information elements ....................................................................................................... 72

79.5.1 Introduction......................................................................................................................... 7279.5.2 Identification ....................................................................................................................... 72

79.5.2.1 Implementation identification................................................................................... 7279.5.2.2 Protocol summary ..................................................................................................... 72

79.5.3 Major capabilities/options................................................................................................... 7379.5.4 IEEE 802.3 Organizationally Specific TLV ....................................................................... 7379.5.5 MAC/PHY Configuration/Status TLV ............................................................................... 7479.5.6 EEE TLV ............................................................................................................................ 7479.5.7 EEE Fast Wake TLV .......................................................................................................... 7579.5.8 Power Via MDI TLV.......................................................................................................... 7579.5.9 Link Aggregation TLV ....................................................................................................... 7679.5.10 Maximum Frame Size TLV................................................................................................ 76

80. Introduction to 40 Gb/s and 100 Gb/s networks ................................................................................... 77

80.1 Overview..................................................................................................................................... 7780.1.1 Scope................................................................................................................................... 7780.1.2 Objectives ........................................................................................................................... 7780.1.3 Relationship of 40 Gigabit and 100 Gigabit Ethernet to the ISO OSI reference

model .................................................................................................................................. 7780.1.4 Nomenclature...................................................................................................................... 7880.1.5 Physical Layer signaling systems ....................................................................................... 80

80.2 Summary of 40 Gigabit and 100 Gigabit Ethernet sublayers ..................................................... 8180.2.1 Reconciliation Sublayer (RS) and Media Independent Interface ....................................... 8180.2.2 Physical Coding Sublayer (PCS) ........................................................................................ 8180.2.3 Forward Error Correction (FEC) sublayers ........................................................................ 81


80.2.4 Physical Medium Attachment (PMA) sublayer.................................................................. 8280.2.5 Physical Medium Dependent (PMD) sublayer ................................................................... 8280.2.6 Auto-Negotiation ................................................................................................................ 8280.2.7 Management interface (MDIO/MDC) ................................................................................ 8280.2.8 Management........................................................................................................................ 82

80.3 Service interface specification method and notation .................................................................. 8280.3.1 Inter-sublayer service interface........................................................................................... 8380.3.2 Instances of the Inter-sublayer service interface................................................................. 8380.3.3 Semantics of inter-sublayer service interface primitives .................................................... 84

80.3.3.1 IS_UNITDATA_i.request......................................................................................... 8480.3.3.1.1 Semantics of the service primitive.................................................................. 8480.3.3.1.2 When generated .............................................................................................. 8480.3.3.1.3 Effect of receipt .............................................................................................. 84

80.3.3.2 IS_UNITDATA_i.indication .................................................................................... 8480.3.3.2.1 Semantics of the service primitive.................................................................. 8980.3.3.2.2 When generated .............................................................................................. 8980.3.3.2.3 Effect of receipt .............................................................................................. 89

80.3.3.3 IS_SIGNAL.indication ............................................................................................. 8980.3.3.3.1 Semantics of the service primitive.................................................................. 8980.3.3.3.2 When generated .............................................................................................. 8980.3.3.3.3 Effect of receipt .............................................................................................. 89

80.3.3.4 IS_TX_MODE.request ............................................................................................. 8980.3.3.4.1 Semantics of the service primitive.................................................................. 9080.3.3.4.2 When generated .............................................................................................. 9080.3.3.4.3 Effect of receipt .............................................................................................. 90

80.3.3.5 IS_RX_MODE.request ............................................................................................. 9080.3.3.5.1 Semantics of the service primitive.................................................................. 9080.3.3.5.2 When generated .............................................................................................. 9080.3.3.5.3 Effect of receipt .............................................................................................. 90

80.3.3.6 IS_RX_LPI_ACTIVE.request .................................................................................. 9080.3.3.6.1 Semantics of the service primitive.................................................................. 9080.3.3.6.2 When generated .............................................................................................. 9180.3.3.6.3 Effect of receipt .............................................................................................. 91

80.3.3.7 IS_ENERGY_DETECT.indication .......................................................................... 9180.3.3.7.1 Semantics of the service primitive.................................................................. 9180.3.3.7.2 When generated .............................................................................................. 9180.3.3.7.3 Effect of receipt .............................................................................................. 91

80.3.3.8 IS_RX_TX_MODE.indication ................................................................................. 9180.3.3.8.1 Semantics of the service primitive.................................................................. 9180.3.3.8.2 When generated .............................................................................................. 9180.3.3.8.3 Effect of receipt .............................................................................................. 91

80.4 Delay constraints......................................................................................................................... 9280.5 Skew constraints ......................................................................................................................... 9280.6 State diagrams............................................................................................................................. 9980.7 Protocol implementation conformance statement (PICS) proforma........................................... 99

81. Reconciliation Sublayer (RS) and Media Independent Interface for 40 Gb/s and 100 Gb/s operation (XLGMII and CGMII)........................................................................................................ 100

81.1 Overview................................................................................................................................... 10081.1.1 Summary of major concepts ............................................................................................. 10181.1.2 Application........................................................................................................................ 10181.1.3 Rate of operation............................................................................................................... 10181.1.4 Delay constraints............................................................................................................... 101


81.1.5 Allocation of functions ..................................................................................................... 10281.1.6 XLGMII/CGMII structure ................................................................................................ 10281.1.7 Mapping of XLGMII/CGMII signals to PLS service primitives...................................... 103

81.1.7.1 Mapping of PLS_DATA.request ............................................................................ 10381.1.7.1.1 Function ....................................................................................................... 10381.1.7.1.2 Semantics of the service primitive................................................................ 10381.1.7.1.3 When generated ............................................................................................ 10381.1.7.1.4 Effect of receipt ............................................................................................ 103

81.1.7.2 Mapping of PLS_DATA.indication........................................................................ 10481.1.7.2.1 Function ....................................................................................................... 10481.1.7.2.2 Semantics of the service primitive............................................................... 10481.1.7.2.3 When generated ............................................................................................ 10481.1.7.2.4 Effect of receipt ............................................................................................ 104

81.1.7.3 Mapping of PLS_CARRIER.indication ................................................................. 10481.1.7.4 Mapping of PLS_SIGNAL.indication .................................................................... 10481.1.7.5 Mapping of PLS_DATA_VALID.indication ......................................................... 105

81.1.7.5.1 Function ....................................................................................................... 10581.1.7.5.2 Semantics of the service primitive................................................................ 10581.1.7.5.3 When generated ............................................................................................ 10581.1.7.5.4 Effect of receipt ............................................................................................ 105

81.2 XLGMII/CGMII data stream.................................................................................................... 10581.2.1 Inter-frame ................................................................................................. 10681.2.2 Preamble and start of frame delimiter ................................................ 10681.2.3 Data ....................................................................................................................... 10781.2.4 End of frame delimiter ........................................................................................... 10781.2.5 Definition of Start of Packet and End of Packet Delimiters ............................................. 107

81.3 XLGMII/CGMII functional specifications ............................................................................... 10781.3.1 Transmit ............................................................................................................................ 107

81.3.1.1 TX_CLK ................................................................................................................. 10781.3.1.2 TXC (transmit control).................................................................................. 10881.3.1.3 TXD (transmit data) .................................................................................... 10881.3.1.4 Start control character alignment ............................................................................ 11081.3.1.5 Transmit direction LPI transition............................................................................ 111

81.3.2 Receive.............................................................................................................................. 11181.3.2.1 RX_CLK (receive clock) ........................................................................................ 11181.3.2.2 RXC (receive control) ................................................................................... 11281.3.2.3 RXD (receive data) ................................................................................................. 11381.3.2.4 Receive direction LPI transition ............................................................................. 114

81.3.3 Error and fault handling .................................................................................................... 11581.3.3.1 Response to error indications by the XLGMII/CGMII .......................................... 11581.3.3.2 Conditions for generation of transmit Error control characters ............................. 11581.3.3.3 Response to received invalid frame sequences....................................................... 115

81.3.4 Link fault signaling........................................................................................................... 11681.3.4.1 Variables and counters............................................................................................ 11681.3.4.2 State diagram .......................................................................................................... 117

81.4 LPI assertion and detection....................................................................................................... 11781.4.1 LPI messages .................................................................................................................... 11981.4.2 Transmit LPI state diagram............................................................................................... 119

81.4.2.1 Variables and counters............................................................................................ 11981.4.2.2 State Diagram ......................................................................................................... 120

81.4.3 Considerations for transmit system behavior.................................................................... 12081.4.4 Considerations for receive system behavior ..................................................................... 121

81.5 Protocol implementation conformance statement (PICS) proforma for Clause 81, Reconciliation Sublayer (RS) and Media Independent Interface for 40 Gb/s and 100 Gb/s


operation ................................................................................................................................... 12281.5.1 Introduction....................................................................................................................... 12281.5.2 Identification ..................................................................................................................... 122

81.5.2.1 Implementation identification................................................................................ 12281.5.2.2 Protocol summary ................................................................................................... 12281.5.2.3 Major capabilities/options ...................................................................................... 123

81.5.3 PICS proforma tables for Reconciliation Sublayer and Media Independent Interface for 40 Gb/s and 100 Gb/s operation.................................................................................. 123

81.5.3.1 General ................................................................................................................... 12381.5.3.2 Mapping of PLS service primitives ........................................................................ 12481.5.3.3 Data stream structure .............................................................................................. 12581.5.3.4 XLGMII/CGMII signal functional specifications .................................................. 12581.5.3.5 Link fault signaling state diagram ......................................................................... 12681.5.3.6 LPI functions........................................................................................................... 126

82. Physical Coding Sublayer (PCS) for 64B/66B, type 40GBASE-R and 100GBASE-R ..................... 127

82.1 Overview................................................................................................................................... 12782.1.1 Scope................................................................................................................................. 12782.1.2 Relationship of 40GBASE-R and 100GBASE-R to other standards ............................... 12782.1.3 Summary of 40GBASE-R and 100GBASE-R sublayers ................................................. 128

82.1.3.1 Physical Coding Sublayer (PCS) ............................................................................ 12882.1.4 Inter-sublayer interfaces ................................................................................................... 129

82.1.4.1 PCS service interface (XLGMII/CGMII) ............................................................... 12982.1.4.2 Physical Medium Attachment (PMA) or Forward Error Correction (FEC)

service interface ...................................................................................................... 12982.1.5 Functional block diagram ................................................................................................. 130

82.2 Physical Coding Sublayer (PCS) .............................................................................................. 13182.2.1 Functions within the PCS ................................................................................................. 13182.2.2 Use of blocks .................................................................................................................... 13282.2.3 64B/66B transmission code .............................................................................................. 132

82.2.3.1 Notation conventions .............................................................................................. 13282.2.3.2 Transmission order ................................................................................................. 13382.2.3.3 Block structure ........................................................................................................ 13382.2.3.4 Control codes .......................................................................................................... 13682.2.3.5 Valid and invalid blocks ......................................................................................... 13782.2.3.6 Idle (/I/) ................................................................................................................... 13782.2.3.7 Start (/S/)................................................................................................................. 13882.2.3.8 Terminate (/T/)........................................................................................................ 13882.2.3.9 ordered set (/O/) ...................................................................................................... 13882.2.3.10 Error (/E/)................................................................................................................ 138

82.2.4 Transmit process ............................................................................................................... 13882.2.5 Scrambler .......................................................................................................................... 13982.2.6 Block distribution ............................................................................................................. 13982.2.7 Alignment marker insertion .............................................................................................. 13982.2.8 BIP calculations ................................................................................................................ 14282.2.9 Rapid alignment marker insertion..................................................................................... 14282.2.10 PMA or FEC Interface ...................................................................................................... 14482.2.11 Test-pattern generators ..................................................................................................... 14582.2.12 Block synchronization ...................................................................................................... 14582.2.13 PCS lane deskew............................................................................................................... 14582.2.14 PCS lane reorder ............................................................................................................... 14682.2.15 Alignment marker removal ............................................................................................... 14682.2.16 Descrambler ...................................................................................................................... 146


82.2.17 Receive process................................................................................................................. 14682.2.18 Test-pattern checker.......................................................................................................... 14782.2.19 Detailed functions and state diagrams .............................................................................. 147

82.2.19.1 State diagram conventions ...................................................................................... 14782.2.19.2 State variables ......................................................................................................... 147

82.2.19.2.1 Constants....................................................................................................... 14782.2.19.2.2 Variables ....................................................................................................... 14882.2.19.2.3 Functions....................................................................................................... 15182.2.19.2.4 Counters ........................................................................................................ 15282.2.19.2.5 Timers ........................................................................................................... 153

82.2.19.3 State diagrams......................................................................................................... 15482.2.19.3.1 LPI state diagrams ........................................................................................ 154

82.3 PCS Management ..................................................................................................................... 15582.3.1 PMD MDIO function mapping......................................................................................... 155

82.4 Loopback .................................................................................................................................. 15782.5 Delay constraints....................................................................................................................... 15782.6 Auto-Negotiation ...................................................................................................................... 15782.7 Protocol implementation conformance statement (PICS) proforma for Clause 82, Physical

Coding Sublayer (PCS) for 64B/66B, type 40GBASE-R and 100GBASE-R.......................... 16682.7.1 Introduction....................................................................................................................... 16682.7.2 Identification ..................................................................................................................... 166

82.7.2.1 Implementation identification................................................................................. 16682.7.2.2 Protocol summary ................................................................................................... 166

82.7.3 Major capabilities/options................................................................................................. 16782.7.4 PICS Proforma Tables for PCS, type 40GBASE-R and 100GBASE-R........................... 168

82.7.4.1 Coding rules ............................................................................................................ 16882.7.4.2 Scrambler and Descrambler.................................................................................... 16882.7.4.3 Deskew and Reordering.......................................................................................... 16882.7.4.4 Alignment Markers ................................................................................................. 169

82.7.5 Test-pattern modes............................................................................................................ 16982.7.5.1 Bit order .................................................................................................................. 169

82.7.6 Management...................................................................................................................... 16982.7.6.1 State diagrams......................................................................................................... 17082.7.6.2 Loopback ............................................................................................................... 17182.7.6.3 Delay constraints..................................................................................................... 17182.7.6.4 Auto-Negotiation for Backplane Ethernet functions ............................................. 17182.7.6.5 LPI functions........................................................................................................... 172

83. Physical Medium Attachment (PMA) sublayer, type 40GBASE-R and 100GBASE-R.................... 173

83.1 Overview................................................................................................................................... 17383.1.1 Scope................................................................................................................................. 17383.1.2 Position of the PMA in the 40GBASE-R or 100GBASE-R sublayers............................. 17383.1.3 Summary of functions....................................................................................................... 17383.1.4 PMA sublayer positioning ................................................................................................ 173

83.2 PMA interfaces ......................................................................................................................... 17683.3 PMA service interface .............................................................................................................. 17683.4 Service interface below PMA ................................................................................................... 17983.5 Functions within the PMA........................................................................................................ 180

83.5.1 Per input-lane clock and data recovery............................................................................. 18083.5.2 Bit-level multiplexing ....................................................................................................... 18083.5.3 Skew and Skew Variation................................................................................................. 182

83.5.3.1 Skew generation toward SP0 .................................................................................. 18283.5.3.2 Skew generation toward SP1 .................................................................................. 182


83.5.3.3 Skew tolerance at SP1............................................................................................. 18283.5.3.4 Skew generation toward SP2 .................................................................................. 18283.5.3.5 Skew tolerance at SP5............................................................................................. 18283.5.3.6 Skew generation at SP6 .......................................................................................... 18283.5.3.7 Skew tolerance at SP6............................................................................................. 18383.5.3.8 Skew generation toward SP7 .................................................................................. 183

83.5.4 Delay constraints............................................................................................................... 18383.5.5 Clocking architecture ........................................................................................................ 18383.5.6 Signal drivers .................................................................................................................... 18483.5.7 Link status......................................................................................................................... 18483.5.8 PMA local loopback mode ............................................................................................... 18483.5.9 PMA remote loopback mode (optional) ........................................................................... 18483.5.10 PMA test patterns (optional)............................................................................................. 18583.5.11 Energy Efficient Ethernet ................................................................................................. 187

83.5.11.1 PMA quiet and alert signals.................................................................................... 18783.5.11.2 Detection of PMA quiet and alert signals ............................................................... 18783.5.11.3 Additional transmit functions in the Tx direction................................................... 18883.5.11.4 Additional receive functions in the Tx direction .................................................... 18983.5.11.5 Additional transmit functions in the Rx direction .................................................. 18983.5.11.6 Additional receive functions in the Rx direction .................................................... 19083.5.11.7 Support for BASE-R FEC....................................................................................... 190

83.6 PMA MDIO function mapping................................................................................................. 19083.7 Protocol implementation conformance statement (PICS) proforma for Clause 83, Physical

Medium Attachment (PMA) sublayer, type 40GBASE-R and 100GBASE-R ........................ 19483.7.1 Introduction....................................................................................................................... 19483.7.2 Identification ..................................................................................................................... 194


83.7.3 Major capabilities/options................................................................................................. 19583.7.4 Skew generation and tolerance ......................................................................................... 19783.7.5 Test patterns ...................................................................................................................... 19783.7.6 Loopback modes ............................................................................................................... 19883.7.7 EEE deep sleep with XLAUI/CAUI................................................................................. 198

84. Physical Medium Dependent sublayer and baseband medium, type 40GBASE-KR4...................... 199

84.1 Overview................................................................................................................................... 19984.2 Physical Medium Dependent (PMD) service interface ............................................................ 19984.3 PCS requirements for Auto-Negotiation (AN) service interface.............................................. 20184.4 Delay constraints....................................................................................................................... 20184.5 Skew constraints ....................................................................................................................... 20184.6 PMD MDIO function mapping................................................................................................. 20284.7 PMD functional specifications.................................................................................................. 203

84.7.1 Link block diagram........................................................................................................... 20384.7.2 PMD transmit function ..................................................................................................... 20384.7.3 PMD receive function ....................................................................................................... 20384.7.4 Global PMD signal detect function .................................................................................. 20484.7.5 PMD lane-by-lane signal detect function ......................................................................... 20484.7.6 Global PMD transmit disable function ............................................................................. 20484.7.7 PMD lane-by-lane transmit disable function .................................................................... 20584.7.8 Loopback mode................................................................................................................. 20584.7.9 PMD_fault function .......................................................................................................... 20584.7.10 PMD transmit fault function ............................................................................................. 20584.7.11 PMD receive fault function............................................................................................... 205


84.7.12 PMD control function ....................................................................................................... 20684.8 40GBASE-KR4 electrical characteristics ................................................................................. 206

84.8.1 Transmitter characteristics ................................................................................................ 20684.8.1.1 Test fixture .............................................................................................................. 206

84.8.2 Receiver characteristics .................................................................................................... 20684.8.2.1 Receiver interference tolerance .............................................................................. 206

84.9 Interconnect characteristics....................................................................................................... 20684.10 Environmental specifications.................................................................................................... 206

84.10.1 General safety ................................................................................................................... 20684.10.2 Network safety .................................................................................................................. 20784.10.3 Installation and maintenance guidelines ........................................................................... 20784.10.4 Electromagnetic compatibility .......................................................................................... 20784.10.5 Temperature and humidity................................................................................................ 207

84.11 Protocol implementation conformance statement (PICS) proforma for Clause 84, Physical Medium Dependent sublayer and baseband medium, type 40GBASE-KR4 ........................... 208

84.11.1 Introduction....................................................................................................................... 20884.11.2 Identification ..................................................................................................................... 208

84.11.2.1 Implementation identification................................................................................ 20884.11.2.2 Protocol summary ................................................................................................... 208

84.11.3 Major capabilities/options................................................................................................. 20984.11.4 PICS proforma tables for Clause 84, Physical Medium Dependent (PMD) sublayer

and baseband medium, type 40GBASE-KR4................................................................... 21084.11.4.1 PMD functional specifications................................................................................ 21084.11.4.2 Management functions............................................................................................ 21184.11.4.3 Transmitter electrical characteristics ...................................................................... 21184.11.4.4 Receiver electrical characteristics........................................................................... 21284.11.4.5 Environmental specifications.................................................................................. 212

85. Physical Medium Dependent sublayer and baseband medium, type 40GBASE-CR4 and 100GBASE-CR10............................................................................................................................... 213

85.1 Overview................................................................................................................................... 21385.2 Physical Medium Dependent (PMD) service interface ............................................................ 21485.3 PCS requirements for Auto-Negotiation (AN) service interface.............................................. 21585.4 Delay constraints....................................................................................................................... 21585.5 Skew constraints ....................................................................................................................... 21685.6 PMD MDIO function mapping................................................................................................. 21685.7 PMD functional specifications.................................................................................................. 218

85.7.1 Link block diagram........................................................................................................... 21885.7.2 PMD Transmit function .................................................................................................... 22085.7.3 PMD Receive function...................................................................................................... 22085.7.4 Global PMD signal detect function .................................................................................. 22085.7.5 PMD lane-by-lane signal detect function ......................................................................... 22185.7.6 Global PMD transmit disable function ............................................................................. 22185.7.7 PMD lane-by-lane transmit disable function .................................................................... 22185.7.8 Loopback mode................................................................................................................. 22185.7.9 PMD_fault function .......................................................................................................... 22285.7.10 PMD transmit fault function ............................................................................................. 22285.7.11 PMD receive fault function............................................................................................... 22285.7.12 PMD control function ....................................................................................................... 222

85.8 MDI Electrical specifications for 40GBASE-CR4 and 100GBASE-CR10 ............................. 22285.8.1 Signal levels ...................................................................................................................... 22285.8.2 Signal paths....................................................................................................................... 22385.8.3 Transmitter characteristics ................................................................................................ 223


85.8.3.1 Transmitter differential output return loss .............................................................. 22485.8.3.2 Transmitter noise parameter measurements ........................................................... 22485.8.3.3 Transmitter output waveform ................................................................................. 225

85.8.3.3.1 Coefficient initialization ............................................................................... 22785.8.3.3.2 Coefficient step size...................................................................................... 22785.8.3.3.3 Coefficient range........................................................................................... 22785.8.3.3.4 Waveform acquisition................................................................................... 22785.8.3.3.5 Linear fit to the waveform measurement at TP2 .......................................... 22785.8.3.3.6 Transfer function between the transmit function and TP2 ........................... 228

85.8.3.4 Insertion loss TP0 to TP2 or TP3 to TP5................................................................ 22985.8.3.5 Test fixture .............................................................................................................. 23085.8.3.6 Test fixture impedance............................................................................................ 23185.8.3.7 Test fixture insertion loss........................................................................................ 23185.8.3.8 Data dependent jitter (DDJ) .................................................................................... 23185.8.3.9 Signaling rate range ................................................................................................ 231

85.8.4 Receiver characteristics at TP3 summary......................................................................... 23285.8.4.1 Receiver differential input return loss .................................................................... 23285.8.4.2 Receiver interference tolerance test ........................................................................ 233

85.8.4.2.1 Test setup ...................................................................................................... 23385.8.4.2.2 Test channel .................................................................................................. 23485.8.4.2.3 Test channel calibration ................................................................................ 23485.8.4.2.4 Pattern generator ........................................................................................... 23585.8.4.2.5 Test procedure............................................................................................... 235

85.8.4.3 Bit error ratio .......................................................................................................... 23585.8.4.4 Signaling rate range ................................................................................................ 23585.8.4.5 AC-coupling............................................................................................................ 235

85.9 Channel characteristics ............................................................................................................. 23685.10 Cable assembly characteristics ................................................................................................. 236

85.10.1 Characteristic impedance and reference impedance ......................................................... 23685.10.2 Cable assembly insertion loss ........................................................................................... 23685.10.3 Cable assembly insertion loss deviation (ILD)................................................................. 23885.10.4 Cable assembly return loss ............................................................................................... 23985.10.5 Cable assembly multiple disturber near-end crosstalk (MDNEXT) loss ......................... 24085.10.6 Cable assembly multiple disturber far-end crosstalk (MDFEXT) loss............................. 24085.10.7 Cable assembly integrated crosstalk noise (ICN) ............................................................. 24185.10.8 Cable assembly test fixture ............................................................................................... 24385.10.9 Mated test fixtures ............................................................................................................ 243

85.10.9.1 Mated test fixtures insertion loss ............................................................................ 24485.10.9.2 Mated test fixtures return loss................................................................................. 24485.10.9.3 Mated test fixtures common-mode conversion loss ............................................... 24585.10.9.4 Mated test fixtures integrated crosstalk noise......................................................... 246

85.10.10Shielding ........................................................................................................................... 24685.10.11Crossover function ............................................................................................................ 246

85.11 MDI specification ..................................................................................................................... 24785.11.1 40GBASE-CR4 MDI connectors...................................................................................... 247

85.11.1.1 Style-1 40GBASE-CR4 MDI connectors ............................................................... 24785.11.1.1.1 Style-1 AC-coupling ..................................................................................... 248

85.11.1.2 Style-2 40GBASE-CR4 MDI connectors ............................................................... 24985.11.1.2.1 Style-2 40GBASE-CR4 Connector pin assignments.................................... 249

85.11.2 100GBASE-CR10 MDI connectors.................................................................................. 25085.11.2.1 100GBASE-CR10 MDI AC-coupling .................................................................... 252

85.11.3 Electronic keying .............................................................................................................. 25285.12 Environmental specifications.................................................................................................... 25285.13 Protocol implementation conformance statement (PICS) proforma for Clause 85, Physical


Medium Dependent (PMD) sublayer and baseband medium, type 40GBASE-CR4 and 100GBASE-CR10..................................................................................................................... 253



85.13.3 Major capabilities/options................................................................................................. 25485.13.4 PICS proforma tables for Physical Medium Dependent (PMD) sublayer and

baseband medium, type 40GBASE-CR4 and 100GBASE-CR10 .................................... 25585.13.4.1 PMD functional specifications ............................................................................... 25585.13.4.2 Management functions............................................................................................ 25685.13.4.3 Transmitter specifications ...................................................................................... 25785.13.4.4 Receiver specifications .......................................................................................... 25785.13.4.5 Cable assembly specifications ............................................................................... 25885.13.4.6 MDI connector specifications ................................................................................. 25985.13.4.7 Environmental specifications ................................................................................. 259

86. Physical Medium Dependent (PMD) sublayer and medium, type 40GBASE–SR4 and 100GBASE–SR10 .............................................................................................................................. 260

86.1 Overview................................................................................................................................... 26086.2 Physical Medium Dependent (PMD) service interface ............................................................ 26286.3 Delay and Skew ........................................................................................................................ 263

86.3.1 Delay constraints............................................................................................................... 26386.3.2 Skew and Skew Variation constraints .............................................................................. 263

86.4 PMD MDIO function mapping................................................................................................. 26386.5 PMD functional specifications.................................................................................................. 264

86.5.1 PMD block diagram.......................................................................................................... 26486.5.2 PMD transmit function ..................................................................................................... 26586.5.3 PMD receive function ....................................................................................................... 26586.5.4 PMD global signal detect function ................................................................................... 26586.5.5 PMD lane-by-lane signal detect function ......................................................................... 26686.5.6 PMD reset function........................................................................................................... 26686.5.7 PMD global transmit disable function (optional) ............................................................. 26686.5.8 PMD lane-by-lane transmit disable function (optional) ................................................... 26786.5.9 PMD fault function (optional) .......................................................................................... 26786.5.10 PMD transmit fault function (optional) ............................................................................ 26786.5.11 PMD receive fault function (optional).............................................................................. 267

86.6 Lane assignments ...................................................................................................................... 26786.7 PMD to MDI specifications for 40GBASE-SR4 or 100GBASE-SR10 ................................... 267

86.7.1 Transmitter optical specifications ..................................................................................... 26886.7.2 Characteristics of signal within, and at the receiving end of, a compliant optical

channel .............................................................................................................................. 26986.7.3 40GBASE–SR4 or 100GBASE–SR10 receiver optical specifications ............................ 27086.7.4 40GBASE–SR4 or 100GBASE–SR10 illustrative link power budget ............................. 271

86.8 Definitions of optical and dual-use parameters and measurement methods............................. 27186.8.1 Test points and compliance boards ................................................................................... 27186.8.2 Test patterns and related subclauses ................................................................................. 271

86.8.2.1 Multi-lane testing considerations............................................................................ 27486.8.3 Parameters applicable to both electrical and optical signals............................................. 274

86.8.3.1 Skew and Skew Variation....................................................................................... 27486.8.3.2 Eye diagrams........................................................................................................... 275

86.8.3.2.1 Eye mask acceptable hit count examples...................................................... 27586.8.3.3 Jitter ........................................................................................................................ 275


86.8.3.3.1 J2 Jitter .......................................................................................................... 27586.8.3.3.2 J9 Jitter .......................................................................................................... 275

86.8.4 Optical parameter definitions............................................................................................ 27686.8.4.1 Wavelength and spectral width............................................................................... 27686.8.4.2 Average optical power ............................................................................................ 27686.8.4.3 Optical Modulation Amplitude (OMA).................................................................. 27686.8.4.4 Transmitter and dispersion penalty (TDP).............................................................. 27686.8.4.5 Extinction ratio ....................................................................................................... 27686.8.4.6 Transmitter optical waveform (transmit eye) ......................................................... 276

86.8.4.6.1 Optical transmitter eye mask ........................................................................ 27786.8.4.7 Stressed receiver sensitivity.................................................................................... 27886.8.4.8 Receiver jitter tolerance .......................................................................................... 278

86.9 Safety, installation, environment, and labeling......................................................................... 27986.9.1 General safety ................................................................................................................... 27986.9.2 Laser safety ....................................................................................................................... 27986.9.3 Installation ........................................................................................................................ 27986.9.4 Environment...................................................................................................................... 27986.9.5 PMD labeling .................................................................................................................... 279

86.10 Optical channel ......................................................................................................................... 27986.10.1 Fiber optic cabling model ................................................................................................. 27986.10.2 Characteristics of the fiber optic cabling (channel) .......................................................... 280

86.10.2.1 Optical fiber cable................................................................................................... 28086.10.2.2 Optical fiber connection.......................................................................................... 280

86.10.2.2.1 Connection insertion loss.............................................................................. 28186.10.2.2.2 Maximum discrete reflectance...................................................................... 281

86.10.3 Medium Dependent Interface (MDI) ................................................................................ 28186.10.3.1 Optical lane assignments for 40GBASE-SR4 ........................................................ 28186.10.3.2 Optical lane assignments for 100GBASE-SR10 .................................................... 28286.10.3.3 Medium Dependent Interface (MDI) requirements ................................................ 282

86.11 Protocol implementation conformance statement (PICS) proforma for Clause 86, Physical Medium Dependent (PMD) sublayer and medium, type 40GBASE–SR4 and 100GBASE–SR10.......................................................................................................................................... 284



86.11.3 Major capabilities/options................................................................................................. 28586.11.4 PICS proforma tables for Physical Medium Dependent (PMD) sublayer and medium,

types 40GBASE–SR4 and 100GBASE–SR10 ................................................................. 28686.11.4.1 PMD functional specifications................................................................................ 28686.11.4.2 Management functions............................................................................................ 28786.11.4.3 Optical specifications for 40GBASE–SR4 or 100GBASE–SR10.......................... 28786.11.4.4 Definitions of parameters and measurement methods ............................................ 28886.11.4.5 Environmental and safety specifications ................................................................ 28886.11.4.6 Optical channel and MDI........................................................................................ 289

87. Physical Medium Dependent (PMD) sublayer and medium, type 40GBASE-LR4 and 40GBASE-ER4................................................................................................................................... 290


87.3.1 Delay constraints............................................................................................................... 29287.3.2 Skew constraints ............................................................................................................... 292



87.5.1 PMD block diagram.......................................................................................................... 29287.5.2 PMD transmit function ..................................................................................................... 29387.5.3 PMD receive function ....................................................................................................... 29487.5.4 PMD global signal detect function ................................................................................... 29487.5.5 PMD lane-by-lane signal detect function ......................................................................... 29587.5.6 PMD reset function........................................................................................................... 29587.5.7 PMD global transmit disable function (optional) ............................................................. 29587.5.8 PMD lane-by-lane transmit disable function .................................................................... 29587.5.9 PMD fault function (optional) .......................................................................................... 29687.5.10 PMD transmit fault function (optional) ............................................................................ 29687.5.11 PMD receive fault function (optional).............................................................................. 296

87.6 Wavelength-division-multiplexed lane assignments ................................................................ 29687.7 PMD to MDI optical specifications for 40GBASE-LR4 and 40GBASE-ER4 ........................ 296

87.7.1 40GBASE-LR4 and 40GBASE-ER4 transmitter optical specifications .......................... 29787.7.2 40GBASE-LR4 and 40GBASE-ER4 receive optical specifications ................................ 29887.7.3 40GBASE-LR4 and 40GBASE-ER4 illustrative link power budgets.............................. 299

87.8 Definition of optical parameters and measurement methods.................................................... 29987.8.1 Test patterns for optical parameters.................................................................................. 30087.8.2 Skew and Skew Variation................................................................................................. 30187.8.3 Wavelength ....................................................................................................................... 30187.8.4 Average optical power ...................................................................................................... 30187.8.5 Optical Modulation Amplitude (OMA)............................................................................ 30187.8.6 Transmitter and dispersion penalty................................................................................... 301

87.8.6.1 Reference transmitter requirements ........................................................................ 30187.8.6.2 Channel requirements ............................................................................................. 30287.8.6.3 Reference receiver requirements ............................................................................ 30287.8.6.4 Test procedure......................................................................................................... 303

87.8.7 Extinction ratio ................................................................................................................. 30387.8.8 Relative Intensity Noise (RIN20OMA)............................................................................ 30387.8.9 Transmitter optical waveform (transmit eye) ................................................................... 30387.8.10 Receiver sensitivity........................................................................................................... 30387.8.11 Stressed receiver sensitivity.............................................................................................. 303

87.8.11.1 Stressed receiver conformance test block diagram................................................. 30487.8.11.2 Stressed receiver conformance test signal characteristics and calibration ............. 30587.8.11.3 Stressed receiver conformance test signal verification........................................... 30787.8.11.4 Sinusoidal jitter for receiver conformance test ....................................................... 30787.8.11.5 Stressed receiver conformance test procedure for WDM conformance testing ..... 308

87.8.12 Receiver 3 dB electrical upper cutoff frequency .............................................................. 30987.9 Safety, installation, environment, and labeling......................................................................... 309

87.9.1 General safety ................................................................................................................... 30987.9.2 Laser safety ....................................................................................................................... 30987.9.3 Installation ........................................................................................................................ 31087.9.4 Environment...................................................................................................................... 310

87.9.4.1 Electromagnetic emission ....................................................................................... 31087.9.4.2 Temperature, humidity, and handling..................................................................... 310

87.9.5 PMD labeling requirements .............................................................................................. 31087.10 Fiber optic cabling model ......................................................................................................... 31087.11 Characteristics of the fiber optic cabling (channel) .................................................................. 311

87.11.1 Optical fiber cable............................................................................................................. 31187.11.2 Optical fiber connection.................................................................................................... 312

87.11.2.1 Connection insertion loss........................................................................................ 31287.11.2.2 Maximum discrete reflectance................................................................................ 312


87.11.3 Medium Dependent Interface (MDI) requirements .......................................................... 31287.12 Requirements for interoperation between 40GBASE-LR4 and 40GBASE-ER4..................... 31287.13 Protocol implementation conformance statement (PICS) proforma for Clause 87, Physical

Medium Dependent (PMD) sublayer and medium, type 40GBASE-LR4 and 40GBASE-ER4 ........................................................................................................................................... 313



87.13.3 Major capabilities/options................................................................................................. 31487.13.4 PICS proforma tables for Physical Medium Dependent (PMD) sublayer and medium,

type 40GBASE-LR4 and 40GBASE-ER4........................................................................ 31587.13.4.1 PMD functional specifications................................................................................ 31587.13.4.2 Management functions............................................................................................ 31687.13.4.3 PMD to MDI optical specifications for 40GBASE-LR4........................................ 31687.13.4.4 PMD to MDI optical specifications for 40GBASE-ER4........................................ 31687.13.4.5 Optical measurement methods................................................................................ 31787.13.4.6 Environmental specifications.................................................................................. 31787.13.4.7 Characteristics of the fiber optic cabling and MDI................................................. 317

88. Physical Medium Dependent (PMD) sublayer and medium, type 100GBASE-LR4 and 100GBASE-ER4................................................................................................................................. 318


88.3.1 Delay constraints............................................................................................................... 32088.3.2 Skew constraints ............................................................................................................... 320


88.5.1 PMD block diagram.......................................................................................................... 32088.5.2 PMD transmit function ..................................................................................................... 32188.5.3 PMD receive function ....................................................................................................... 32288.5.4 PMD global signal detect function ................................................................................... 32288.5.5 PMD lane-by-lane signal detect function ......................................................................... 32388.5.6 PMD reset function........................................................................................................... 32388.5.7 PMD global transmit disable function (optional) ............................................................. 32388.5.8 PMD lane-by-lane transmit disable function .................................................................... 32388.5.9 PMD fault function (optional) .......................................................................................... 32488.5.10 PMD transmit fault function (optional) ............................................................................ 32488.5.11 PMD receive fault function (optional).............................................................................. 324

88.6 Wavelength-division-multiplexed lane assignments ................................................................ 32488.7 PMD to MDI optical specifications for 100GBASE-LR4 and 100GBASE-ER4 .................... 325

88.7.1 100GBASE-LR4 and 100GBASE-ER4 transmitter optical specifications ...................... 32588.7.2 100GBASE-LR4 and 100GBASE-ER4 receive optical specifications ............................ 32788.7.3 100GBASE-LR4 and 100GBASE-ER4 illustrative link power budgets.......................... 328

88.8 Definition of optical parameters and measurement methods.................................................... 32888.8.1 Test patterns for optical parameters.....................................................................

Documents

IEEE Standard for Ethernet SECTION SIX · 2016. 11. 14. · 78.4.3.1 Transmitting link partner’s state change procedure across a link ... 78.4.3.2 Receiving link partner’s state