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IEEE Standard for Information technology-- Local and metropolitan area networks-- Specific requirements-- Part 3: CSMA/CD Access Method and Physical Layer Specifications Amendment 3: Data Terminal Equipment (DTE) Power via the Media Dependent Interface (M, 2009
- IEEE Std 802.3at-2009 Front Cover
- Title page
- Introduction
- Notice to users [Go to Page]
- Laws and regulations
- Copyrights
- Updating of IEEE documents
- Errata
- Downloads
- Interpretations
- Patents
- Participants
- CONTENTS
- Important Notice
- 1. Introduction [Go to Page]
- 1.3 Normative references
- 1.4 Definitions
- 25. Physical Medium Dependent (PMD) sublayer and baseband medium, type 100BASE-TX [Go to Page]
- 25.4 Specific requirements and exceptions [Go to Page]
- 25.4.4a Change to 9.1.7, “Worst case droop of transformer” [Go to Page]
- 25.4.4a.1 Equivalent system time constant
- 25.4.5a Addition to 10.1, “Receiver”
- 25.5 Protocol implementation conformance statement (PICS) proforma for Clause 25, Physical Medium Dependent (PMD) sublayer and baseband medium, type 100BASE-TX [Go to Page]
- 25.5.3 Major capabilities/options [Go to Page]
- 25.5.3.1 DTE Power via MDI major capabilities/options
- 25.5.4 PICS proforma tables for the Physical Medium Dependent (PMD) sublayer and baseband medium, type 100BASE-TX [Go to Page]
- 25.5.4.4 DTE Power via MDI compliance
- 30. Management [Go to Page]
- 30.2 Managed objects [Go to Page]
- 30.2.2 Overview of managed objects [Go to Page]
- 30.2.2.1 Text description of managed objects
- 30.2.3 Containment
- 30.2.5 Capabilities
- 30.9 Management for DTE Power via MDI Sourcing Equipment (PSE) [Go to Page]
- 30.9.2 PD managed object class [Go to Page]
- 30.9.2.1 PD attributes [Go to Page]
- 30.9.2.1.1 aPDID
- 30.12.2 LLDP Local System Group managed object class [Go to Page]
- 30.12.2.1 LLDP Local System Group attributes [Go to Page]
- 30.12.2.1.14 aLldpXdot3LocPowerType
- 30.12.2.1.15 aLldpXdot3LocPowerSource
- 30.12.2.1.16 aLldpXdot3LocPowerPriority
- 30.12.2.1.17 aLldpXdot3LocPDRequestedPowerValue
- 30.12.2.1.18 aLldpXdot3LocPSEAllocatedPowerValue
- 30.12.2.1.19 aLldpXdot3LocResponseTime
- 30.12.2.1.20 aLldpXdot3LocReady
- 30.12.2.1.21 aLldpXdot3LocReducedOperationPowerValue
- 30.12.3 LLDP Remote System Group managed object class [Go to Page]
- 30.12.3.1 LLDP Remote System Group attributes [Go to Page]
- 30.12.3.1.14 aLldpXdot3RemPowerType
- 30.12.3.1.15 aLldpXdot3RemPowerSource
- 30.12.3.1.16 aLldpXdot3RemPowerPriority
- 30.12.3.1.17 aLldpXdot3RemPDRequestedPowerValue
- 30.12.3.1.18 aLldpXdot3RemPSEAllocatedPowerValue
- 33. Data Terminal Equipment (DTE) Power via Media Dependent Interface (MDI) [Go to Page]
- 33.1 Overview [Go to Page]
- 33.1.1 Objectives
- 33.1.2 Compatibility considerations
- 33.1.3 Relationship of DTE Power via MDI to the IEEE 802.3 Architecture
- 33.1.4 Type 1 and Type 2 system parameters [Go to Page]
- 33.1.4.1 Type 2 cabling requirement
- 33.1.4.2 Type 1 and Type 2 channel requirement
- 33.2 Power sourcing equipment (PSE) [Go to Page]
- 33.2.1 PSE location
- 33.2.2 Midspan PSE types
- 33.2.3 PI pin assignments
- 33.2.4 PSE state diagrams [Go to Page]
- 33.2.4.1 Overview
- 33.2.4.2 Conventions
- 33.2.4.3 Constants
- 33.2.4.4 Variables
- 33.2.4.5 Timers
- 33.2.4.6 Functions
- 33.2.4.7 State diagrams
- 33.2.5 PSE detection of PDs [Go to Page]
- 33.2.5.1 PSE detection validation circuit
- 33.2.5.2 Detection probe requirements
- 33.2.5.3 Detection criteria
- 33.2.5.4 Rejection criteria
- 33.2.5.5 Open circuit criteria
- 33.2.6 PSE classification of PDs and mutual identification [Go to Page]
- 33.2.6.1 PSE 1-Event Physical Layer classification
- 33.2.6.2 PSE 2-Event Physical Layer classification
- 33.2.7 Power supply output [Go to Page]
- 33.2.7.1 Output voltage in the POWER_ON state
- 33.2.7.2 Voltage transients
- 33.2.7.3 Power feeding ripple and noise
- 33.2.7.4 Continuous output current capability in the POWER_ON state
- 33.2.7.5 Output current in POWER_UP mode
- 33.2.7.6 Overload current
- 33.2.7.7 Output current—at short circuit condition
- 33.2.7.8 Turn off time
- 33.2.7.9 Turn off voltage
- 33.2.7.10 Continuous output power capability in POWER_ON state
- 33.2.7.11 Current unbalance
- 33.2.7.12 Power turn on time
- 33.2.7.13 PSE stability
- 33.2.8 Power supply allocation
- 33.2.9 PSE power removal [Go to Page]
- 33.2.9.1 PSE Maintain Power Signature (MPS) requirements [Go to Page]
- 33.2.9.1.1 PSE AC MPS component requirements
- 33.2.9.1.2 PSE DC MPS component requirements
- 33.3 Powered devices (PDs) [Go to Page]
- 33.3.1 PD PI
- 33.3.2 PD type descriptions
- 33.3.3 PD state diagram [Go to Page]
- 33.3.3.1 Conventions
- 33.3.3.2 Constants
- 33.3.3.3 Variables
- 33.3.3.4 Timers
- 33.3.3.5 State diagrams
- 33.3.4 PD valid and non-valid detection signatures
- 33.3.5 PD classifications [Go to Page]
- 33.3.5.1 PD 1-Event class signature
- 33.3.5.2 PD 2-Event class signature [Go to Page]
- 33.3.5.2.1 Mark Event behavior
- 33.3.6 PSE Type identification
- 33.3.7 PD power [Go to Page]
- 33.3.7.1 Input voltage
- 33.3.7.2 Input average power [Go to Page]
- 33.3.7.2.1 System stability test conditions during startup and steady state operation
- 33.3.7.3 Input inrush current
- 33.3.7.4 Peak operating power
- 33.3.7.5 Peak transient current
- 33.3.7.6 PD behavior during transients at the PSE PI
- 33.3.7.7 Ripple and noise
- 33.3.7.8 PD classification stability time
- 33.3.7.9 Backfeed voltage
- 33.3.8 PD Maintain Power Signature
- 33.4 Additional electrical specifications [Go to Page]
- 33.4.1 Isolation [Go to Page]
- 33.4.1.1 Electrical isolation environments [Go to Page]
- 33.4.1.1.1 Environment A requirements
- 33.4.1.1.2 Environment B requirements
- 33.4.2 Fault tolerance
- 33.4.3 Impedance balance
- 33.4.4 Common-mode output voltage
- 33.4.5 Pair-to-pair output noise voltage
- 33.4.6 Differential noise voltage
- 33.4.7 Return loss
- 33.4.8 100BASE-TX transformer droop
- 33.4.9 Midspan PSE device additional requirements [Go to Page]
- 33.4.9.1 “Connector” or “telecom outlet” Midspan PSE device transmission requirements [Go to Page]
- 33.4.9.1.1 Near End Crosstalk (NEXT)
- 33.4.9.1.2 Insertion loss
- 33.4.9.1.3 Return loss
- 33.4.9.1.4 Work area or equipment cable Midspan PSE
- 33.4.9.2 Midspan signal path requirements [Go to Page]
- 33.4.9.2.1 Alternative A Midspan PSE signal path transfer function
- 33.5 Management function requirements [Go to Page]
- 33.5.1 PSE registers [Go to Page]
- 33.5.1.1 PSE Control register (Register 11) (R/W) [Go to Page]
- 33.5.1.1.1 Reserved bits (11.15:6)
- 33.5.1.1.2 Data Link Layer Classification capability (11.5)
- 33.5.1.1.3 Enable Physical Layer classification (11.4)
- 33.5.1.1.4 Pair Control (11.3:2)
- 33.5.1.1.5 PSE enable (11.1:0)
- 33.5.1.2 PSE Status register (Register 12) (R/W) [Go to Page]
- 33.5.1.2.1 PSE Type electrical parameters (12.15)
- 33.5.1.2.2 Data Link Layer Classification Enabled (12.14)
- 33.5.1.2.3 Physical Layer Classification Supported (12.13)
- 33.5.1.2.4 Power Denied or Removed (12.12)
- 33.5.1.2.5 Valid Signature (12.11)
- 33.5.1.2.6 Invalid Signature (12.10)
- 33.5.1.2.7 Short Circuit (12.9)
- 33.5.1.2.8 Overload (12.8)
- 33.5.1.2.9 MPS Absent (12.7)
- 33.5.1.2.10 PD Class (12.6:4)
- 33.5.1.2.11 PSE Status (12.3:1)
- 33.5.1.2.12 Pair Control Ability (12.0)
- 33.6 Data Link Layer classification [Go to Page]
- 33.6.1 TLV frame definition
- 33.6.2 Data Link Layer classification timing requirements
- 33.6.3 Power control state diagrams [Go to Page]
- 33.6.3.1 Conventions
- 33.6.3.2 Constants
- 33.6.3.3 Variables
- 33.6.3.4 Functions
- 33.6.3.5 State diagrams
- 33.6.4 State change procedure across a link [Go to Page]
- 33.6.4.1 PSE state change procedure across a link
- 33.6.4.2 PD state change procedure across a link
- 33.7 Environmental [Go to Page]
- 33.7.1 General safety
- 33.7.2 Network safety
- 33.7.3 Installation and maintenance guidelines
- 33.7.4 Patch panel considerations
- 33.7.5 Telephony voltages
- 33.7.6 Electromagnetic emissions
- 33.7.7 Temperature and humidity
- 33.7.8 Labeling
- 33.8 Protocol implementation conformance statement (PICS) proforma for Clause 33, DTE Power via MDI [Go to Page]
- 33.8.1 Introduction
- 33.8.2 Identification [Go to Page]
- 33.8.2.1 Implementation identification
- 33.8.2.2 Protocol summary
- 33.8.2.3 PD Major capabilities/options
- 33.8.2.4 PSE Major capabilities/options
- 33.8.3 PICS proforma tables for DTE Power via MDI [Go to Page]
- 33.8.3.1 Common device features
- 33.8.3.2 Power sourcing equipment
- 33.8.3.3 Powered devices
- 33.8.3.4 Electrical specifications applicable to the PSE and PD
- 33.8.3.5 Electrical specifications applicable to the PSE
- 33.8.3.6 Electrical specifications applicable to the PD
- 33.8.3.7 Management function requirements
- 33.8.3.8 Data Link Layer classification requirements
- 33.8.3.9 Environmental specifications applicable to PSEs and PDs
- 33.8.3.10 Environmental specifications applicable to the PSE
- 79. IEEE 802.3 Organizationally Specific Link Layer Discovery Protocol (LLDP) type, length, and value (TLV) information elements [Go to Page]
- 79.2 Requirements of the IEEE 802.3 Organizationally Specific TLV set
- 79.3 IEEE 802.3 Organizationally Specific TLVs [Go to Page]
- 79.3.2 Power via MDI TLV [Go to Page]
- 79.3.2.4 Requested power type/source/priority [Go to Page]
- 79.3.2.4.1 Power type
- 79.3.2.4.2 Power source
- 79.3.2.4.3 Power priority
- 79.3.2.5 PD requested power value
- 79.3.2.6 PSE allocated power value
- 79.4 IEEE 802.3 Organizationally Specific TLV selection management [Go to Page]
- 79.4.2 IEEE 802.3 Organizationally Specific TLV/LLDP Local and Remote System group managed object class cross references
- 79.5 Protocol implementation conformance statement (PICS) proforma for IEEE 802.3 Organizationally Specific Link Layer Discovery Protocol (LLDP) type, length, and values (TLV) information elements [Go to Page]
- 79.5.6 Power via MDI TLV
- Annex A (informative) Bibliography
- Annex 33A (informative) PSE-PD stability [Go to Page]
- 33A.1 Recommended PSE design guidelines and test setup
- 33A.2 Recommended PD design guidelines [Go to Page]