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BS EN IEC 62680-1-3:2022 – TC:2023 Edition

BS EN IEC 62680-1-3:2022 – TC:2023 Edition

$280.87

Tracked Changes. Universal serial bus interfaces for data and power – Common components. USB Type-C® cable and connector specification

Published By Publication Date Number of Pages
BSI 2023 892
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IEC 62680-1-3:2022 defines the USB Type-C® receptacles, plug and cables. The USB Type-C Cable and Connector Specification is guided by the following principles: – Enable new and exciting host and device form-factors where size, industrial design and style are important parameters – Work seamlessly with existing USB host and device silicon solutions – Enhance ease of use for connecting USB devices with a focus on minimizing user confusion for plug and cable orientation The USB Type-C Cable and Connector Specification defines a new receptacle, plug, cable and detection mechanisms that are compatible with existing USB interface electrical and functional specifications. This specification covers the following aspects that are needed to produce and use this new USB cable/connector solution in newer platforms and devices, and that interoperate with existing platforms and devices: – USB Type-C receptacles, including electro-mechanical definition and performance requirements – USB Type-C plugs and cable assemblies, including electro-mechanical definition and performance requirements – USB Type-C to legacy cable assemblies and adapters – USB Type-C-based device detection and interface configuration, including support for legacy connections – USB Power Delivery optimized for the USB Type-C connector The USB Type-C Cable and Connector Specification defines a standardized mechanism that supports Alternate Modes, such as repurposing the connector for docking-specific applications. IEC 62680-1-3:2022 cancels and replaces the fourth edition published in 2021 and constitutes a technical revision. This standard is the USB-IF publication Universal Serial Bus Type-C Cable and Connector Specification Revision 2.0. New release primarily for enabling Extended Power Range (EPR) and defining EPR cables aligning with USB Power Delivery Specification R3.1 V1.0. Also includes incorporation of all approved ECNs as the revision date plus editorial clean-up.

PDF Catalog

PDF Pages PDF Title
505 undefined
507 European foreword
Endorsement notice
508 FOREWORD
510 INTRODUCTION
513 English
CONTENTS
532 1 Introduction
1.1 Purpose
1.2 Scope
1.3 Related Documents
533 1.4 Conventions
1.4.1 Precedence
1.4.2 Keywords
534 1.4.3 Numbering
1.5 Terms and Abbreviations
539 2 Overview
2.1 Introduction
Figures
Figure 21 USB Type-C Receptacle Interface (Front View)
540 2.2 USB Type-C Receptacles, Plugs and Cables
Figure 22 USB Full-Featured Type-C Plug Interface (Front View)
541 2.3 Configuration Process
2.3.1 Source-to-Sink Attach/Detach Detection
542 2.3.2 Plug Orientation/Cable Twist Detection
2.3.3 Initial Power (Source-to-Sink) Detection and Establishing the Data (Host-to-Device) Relationship
543 2.3.4 USB Type-C Vbus Current Detection and Usage
2.3.5 USB PD Communication
2.3.6 Functional Extensions
544 2.4 Vbus
2.5 Vconn
Tables
Table 21 Summary of power supply options
545 2.6 Hubs
546 Table 31 USB Type-C Standard Cable Assemblies
3 Mechanical
3.1 Overview
3.1.1 Compliant Connectors
3.1.2 Compliant Cable Assemblies
547 Table 32 USB Type-C Legacy Cable Assemblies
Table 33 USB Type-C Legacy Adapter Assemblies
3.1.3 Compliant USB Type-C to Legacy Cable Assemblies
3.1.4 Compliant USB Type-C to Legacy Adapter Assemblies
548 3.2 USB Type-C Connector Mating Interfaces
3.2.1 Interface Definition
551 Figure 31 USB Type-C Receptacle Interface Dimensions
554 Figure 32 Reference Design USB Type-C Plug External EMC Spring Contact Zones
555 Figure 33 USB Full-Featured Type-C Plug Interface Dimensions
558 Figure 34 Reference Footprint for a USB Type-C Vertical Mount Receptacle (Informative)
559 Figure 35 Reference Footprint for a USB Type-C Dual-Row SMT Right Angle Receptacle (Informative)
560 Figure 36 Reference Footprint for a USB Type-C Hybrid Right-Angle Receptacle (Informative)
561 Figure 37 Reference Footprint for a USB Type-C Mid-Mount Dual-Row SMT Receptacle (Informative)
562 Figure 38 Reference Footprint for a USB Type-C Mid-Mount Hybrid Receptacle (Informative)
563 Figure 39 Reference Footprint for a USB 2.0 Type-C Through Hole Right Angle Receptacle (Informative)
564 Figure 310 Reference Footprint for a USB 2.0 Type-C Single Row Right Angle Receptacle (Informative)
566 Figure 311 USB 2.0 Type-C Plug Interface Dimensions
569 Figure 312 USB Type-C Plug EMC Shielding Spring Tip Requirements
3.2.2 Reference Designs
570 Figure 313 Reference Design of Receptacle Mid-Plate
Figure 314 Reference Design of the Retention Latch
571 Figure 315 Illustration of the Latch Soldered to the Paddle Card Ground
572 Figure 316 Reference Design of the USB Full-Featured Type-C Plug Internal EMC Spring
573 Figure 317 Reference Design of the USB 2.0 Type-C Plug Internal EMC Spring
574 Figure 318 Reference Design of Internal EMC Pad
575 Figure 319 Reference Design of a USB Type-C Receptacle with External EMC Springs
576 Figure 320 Reference Design for a USB Full-Featured Type-C Plug Paddle Card
577 Table 34 USB Type-C Receptacle Interface Pin Assignments
3.2.3 Pin Assignments and Descriptions
578 Table 35 USB Type-C Receptacle Interface Pin Assignments for USB 2.0-only Support
3.3 Cable Construction and Wire Assignments
3.3.1 Cable Construction (Informative)
579 Figure 321 Illustration of a USB Full-Featured Type-C Cable Cross Section, a Coaxial Wire Example with Vconn
Figure 322 Illustration of a USB Full-Featured Type-C Cable Cross Section, a Coaxial Wire Example without Vconn
580 Table 36 USB Type-C Standard Cable Wire Assignments
3.3.2 Wire Assignments
581 Table 37 USB Type-C Cable Wire Assignments for Legacy Cables/Adapters
3.3.3 Wire Gauges and Cable Diameters (Informative)
582 Table 38 Reference Wire Gauges for standard USB Type-C Cable Assemblies
Table 39 Reference Wire Gauges for USB Type-C to Legacy Cable Assemblies
583 Figure 323 USB Full-Featured Type-C Standard Cable Assembly
3.4 Standard USB Type-C Cable Assemblies
3.4.1 USB Full-Featured Type-C Cable Assembly
584 Table 310 USB Full-Featured Type-C Standard Cable Assembly Wiring
3.4.2 USB 2.0 Type-C Cable Assembly
585 Table 311 USB 2.0 Type-C Standard Cable Assembly Wiring
3.4.3 USB Type-C Captive Cable Assemblies
3.4.4 USB Type-C Thumb Drive Assemblies
3.5 Legacy Cable Assemblies
586 Figure 324 USB Type-C to USB 3.1 Standard-A Cable Assembly
3.5.1 USB Type-C to USB 3.1 Standard-A Cable Assembly
587 Table 312 USB Type-C to USB 3.1 Standard-A Cable Assembly Wiring
588 Figure 325 USB Type-C to USB 2.0 Standard-A Cable Assembly
Table 313 USB Type-C to USB 2.0 Standard-A Cable Assembly Wiring
3.5.2 USB Type-C to USB 2.0 Standard-A Cable Assembly
589 Figure 326 USB Type-C to USB 3.1 Standard-B Cable Assembly
Table 314 USB Type-C to USB 3.1 Standard-B Cable Assembly Wiring
3.5.3 USB Type-C to USB 3.1 Standard-B Cable Assembly
590 Figure 327 USB Type-C to USB 2.0 Standard-B Cable Assembly
Table 315 USB Type-C to USB 2.0 Standard-B Cable Assembly Wiring
3.5.4 USB Type-C to USB 2.0 Standard-B Cable Assembly
591 Figure 328 USB Type-C to USB 2.0 Mini-B Cable Assembly
Table 316 USB Type-C to USB 2.0 Mini-B Cable Assembly Wiring
3.5.5 USB Type-C to USB 2.0 Mini-B Cable Assembly
592 Figure 329 USB Type-C to USB 3.1 Micro-B Cable Assembly
Table 317 USB Type-C to USB 3.1 Micro-B Cable Assembly Wiring
3.5.6 USB Type-C to USB 3.1 Micro-B Cable Assembly
593 Figure 330 USB Type-C to USB 2.0 Micro-B Cable Assembly
Table 318 USB Type-C to USB 2.0 Micro-B Cable Assembly Wiring
3.5.7 USB Type-C to USB 2.0 Micro-B Cable Assembly
594 Figure 331 USB Type-C to USB 3.1 Standard-A Receptacle Adapter Assembly
3.6 Legacy Adapter Assemblies
3.6.1 USB Type-C to USB 3.1 Standard-A Receptacle Adapter Assembly
595 Table 319 USB Type-C to USB 3.1 Standard-A Receptacle Adapter Assembly Wiring
596 Figure 332 USB Type-C to USB 2.0 Micro-B Receptacle Adapter Assembly
Table 320 USB Type-C to USB 2.0 Micro-B Receptacle Adapter Assembly Wiring
3.6.2 USB Type-C to USB 2.0 Micro-B Receptacle Adapter Assembly
597 Table 321 Differential Insertion Loss Examples for TX/RX with Twisted Pair Construction
3.7 Electrical Characteristics
3.7.1 Raw Cable (Informative)
598 Figure 333 Illustration of Test Points for a Mated Cable Assembly
Table 322 Differential Insertion Loss Examples for USB TX/RX with Coaxial Construction
3.7.2 USB Type-C to Type-C Passive Cable Assemblies (Normative)
599 Figure 334 Recommended Differential Insertion Loss Requirement (USB 3.2 Gen2 and USB4 Gen2)
Figure 335 Recommended Differential Return Loss Requirement
600 Figure 336 Recommended Differential Crosstalk Requirement
Figure 337 Recommended Differential Near-End and Far-End Crosstalk Requirement between USB D+/D− Pair and TX/RX Pair
601 Figure 338 Recommended Differential Insertion Loss Requirement (USB4 Gen3)
602 Figure 339 Illustration of Insertion Loss Fit at Nyquist Frequency
Figure 340 Input Pulse Spectrum
603 Figure 341 IMR Limit as Function of ILfitatNq
605 Figure 342 IRL Limit as Function of ILfitatNq
Figure 343 Differential-to-Common-Mode Conversion Requirement
608 Figure 344 IMR Limit as Function of ILfit at 10 GHz (USB4 Gen3)
609 Figure 345 Definition of Port, Victim, and Aggressor
Figure 346 IXT_DP and IXT_USB Limit as Function of ILfit at 10 GHz (USB4 Gen3)
610 Figure 347 IRL Limit as Function of ILfitatNq (USB4 Gen3)
Figure 348 Differential-to-Common-Mode Conversion Requirement (USB4 Gen3)
611 Figure 349 Cable Assembly in System
Table 323 Key Parameters in COM Configuration File
612 Table 324 Electrical Requirements for CC and SBU wires
Table 325 Coupling Matrix for Low Speed Signals
613 Figure 350 Requirement for Differential Coupling between CC and D+/D−
Figure 351 Requirement for Single-Ended Coupling between CC and D− in USB 2.0 Type-C Cables
614 Figure 352 Requirement for Single-Ended Coupling between CC and D− in USB Full-Featured Type-C Cables
Figure 353 Requirement for Differential Coupling between Vbus and D+/D−
615 Figure 354 Requirement for Single-Ended Coupling between SBU_A and SBU_B
Figure 355 Requirement for Single-Ended Coupling between SBU_A/SBU_B and CC
Table 326 Maximum Mutual Inductance (M) between Vbus and Low Speed Signal Lines
616 Figure 356 Requirement for Coupling between SBU_A and differential D+/D−, and SBU_B and differential D+/D−
Table 327 USB D+/D− Signal Integrity Requirements for USB Type-C to USB Type-C Passive Cable Assemblies
617 Figure 357 Illustration of USB Type-C Mated Connector
Figure 358 Recommended Impedance Limits of a USB Type-C Mated Connector
3.7.3 Mated Connector (Informative – USB 3.2 Gen2 and USB4 Gen2)
618 Figure 359 Recommended Ground Void Dimensions for USB Type-C Receptacle
Table 328 USB Type-C Mated Connector Recommended Signal Integrity Characteristics (Informative)
619 Figure 360 Recommended Differential Near-End and Far-End Crosstalk Limits between D+/D− Pair and TX/RX Pairs
620 Figure 361 Recommended Limits for Differential-to-Common-Mode Conversion
Table 329 USB Type-C Receptacle Connector Signal Integrity Characteristics for USB4 Gen3 (Normative)
3.7.4 Receptacle Connector SI Requirements and Testing (Normative – USB4 Gen3)
621 3.7.5 USB Type-C to Legacy Cable Assemblies (Normative)
622 Table 330 USB D+/D− Signal Integrity Requirements for USB Type-C to Legacy USB Cable Assemblies
Table 331 Design Targets for USB Type-C to USB 3.1 Gen2 Legacy Cable Assemblies (Informative)
623 Table 332 USB Type-C to USB 3.1 Gen2 Legacy Cable Assembly Signal Integrity Requirements (Normative)
624 Figure 362 IMR Limit as Function of ILfitatNq for USB Type-C to Legacy Cable Assembly
Figure 363 IRL Limit as Function of ILfitatNq for USB Type-C to Legacy Cable Assembly
625 Table 333 USB D+/D− Signal Integrity Requirements for USB Type-C to Legacy USB Adapter Assemblies (Normative)
Table 334 Design Targets for USB Type-C to USB 3.1 Standard-A Adapter Assemblies (Informative)
3.7.6 USB Type-C to USB Legacy Adapter Assemblies (Normative)
626 Table 335 USB Type-C to USB 3.1 Standard-A Receptacle Adapter Assembly Signal Integrity Requirements (Normative)
3.7.7 Shielding Effectiveness Requirements (Normative)
627 Figure 364 Cable Assembly Shielding Effectiveness Testing
628 Figure 365 Shielding Effectiveness Pass/Fail Criteria
3.7.8 DC Electrical Requirements (Normative)
629 Figure 366 LLCR Measurement Diagram
630 Figure 367 Temperature Measurement Point
Table 336 Current Rating Test PCB
631 Figure 368 Example Current Rating Test Fixture Trace Configuration
Table 337 Maximum DC Resistance Requirement (Normative)
3.8 Mechanical and Environmental Requirements (Normative)
632 3.8.1 Mechanical Requirements
633 Figure 369 Example of 4-Axis Continuity Test Fixture
634 Table 338 Force and Moment Requirements
635 Figure 370 Example Wrenching Strength Test Fixture for Plugs without Overmold
Figure 371 Reference Wrenching Strength Continuity Test Fixture
636 Figure 372 Example of Wrenching Strength Test Mechanical Failure Point
Figure 373 Wrenching Strength Test with Cable in Fixture
637 Table 339 Environmental Test Conditions
3.8.2 Environmental Requirements
638 Table 340 Reference Materials
3.9 Docking Applications (Informative)
639 Figure 374 USB Type-C Cable Receptacle Flange Example
3.10 Implementation Notes and Design Guides
3.10.1 EMC Management (Informative)
640 Figure 375 EMC Guidelines for Side Latch and Mid-plate
Figure 376 EMC Finger Connections to Plug Shell
641 Figure 377 EMC Pad Connections to Receptacle Shell
Figure 378 Examples of Connector Apertures
Figure 379 Recommended Minimum Spacing between Connectors
3.10.2 Stacked and Side-by-Side Connector Physical Spacing (Informative)
642 Figure 380 Recommended Minimum Plug Overmold Clearance
Figure 381 Cable Plug Overmold and an Angled Surface
3.10.3 Cable Mating Considerations (Informative)
3.11 Extended Power Range (EPR) Cables
3.11.1 Electrical Requirements
643 3.11.2 EPR Cable Identification Requirements
644 Table 41 USB Type-C List of Signals
4 Functional
4.1 Signal Summary
4.2 Signal Pin Descriptions
4.2.1 SuperSpeed USB Pins
4.2.2 USB 2.0 Pins
645 4.2.3 Auxiliary Signal Pins
4.2.4 Power and Ground Pins
4.2.5 Configuration Pins
4.3 Sideband Use (SBU)
4.4 Power and Ground
4.4.1 IR Drop
646 Figure 41 Cable IR Drop
Figure 42 Cable IR Drop for powered cables
4.4.2 Vbus
647 Table 42 Vbus Source Characteristics
648 Table 43 Vbus Sink Characteristics
4.4.3 Vconn
649 Table 44 USB Type-C Source Port’s Vconn Requirements Summary
650 Table 45 Vconn Source Characteristics
651 Table 46 Cable Vconn Sink Characteristics
652 Table 47 Vconn-Powered Accessory (VPA) Sink Characteristics
653 Table 48 Vconn-Powered USB Device (VPD) Sink Characteristics
4.5 Configuration Channel (CC)
4.5.1 Architectural Overview
655 Figure 43 Logical Model for Single-Lane Data Bus Routing across USB Type-C-based Ports
Figure 44 Logical Model for USB Type-C-based Ports for a Single-Lane Direct Connect Device
656 Table 49 USB Type-C-based Port Interoperability
657 Figure 45 Pull-Up/Pull-Down CC Model
Figure 46 Current Source/Pull-Down CC Model
658 Table 410 Source Perspective
Table 411 Source (Host) and Sink (Device) Behaviors by State
660 Figure 47 Source Functional Model for CC1 and CC2
661 Figure 48 Source Functional Model Supporting USB PD PR_Swap
Figure 49 Sink Functional Model for CC1 and CC2
662 Figure 410 Sink Functional Model Supporting USB PD PR_Swap and Vconn_Swap
Figure 411 DRP Functional Model for CC1 and CC2
664 Table 412 USB PD Swapping Port Behavior Summary
665 Table 413 Power Role Behavioral Model Summary
666 4.5.2 CC Functional and Behavioral Requirements
667 Figure 412 Connection State Diagram: Source
668 Figure 413 Connection State Diagram: Sink
669 Figure 414 Connection State Diagram: Sink with Accessory Support
670 Figure 415 Connection State Diagram: DRP
671 Figure 416 Connection State Diagram: DRP with Accessory and Try.SRC Support
672 Figure 417 Connection State Diagram: DRP with Accessory and Try.SNK Support
673 Figure 418 Connection State Diagram: Charge-Through VPD
674 Table 414 Source Port CC Pin State
Table 415 Sink Port CC Pin State
695 Figure 419 Sink Power Sub-States
696 Figure 420 Passive Cable eMarker State Diagram
697 Figure 421 Active Cable eMarker State Diagram
698 Figure 422 Cable Ra Management State Diagram
699 Table 416 Mandatory and Optional States
701 Figure 423 Source to Sink Functional Model
4.5.3 USB Port Interoperability Behavior
702 Figure 424 Source to DRP Functional Model
703 Figure 425 DRP to Sink Functional Model
704 Figure 426 DRP to DRP Functional Model – CASE 1
705 Figure 427 DRP to DRP Functional Model – CASE 2 & 3
707 Figure 428 Source to Source Functional Model
Figure 429 Sink to Sink Functional Model
708 Figure 430 DRP to VPD Model
709 Figure 431 Example DRP to Charge-Through Vconn-Powered USB Device Model
716 Figure 432 Source to Legacy Device Port Functional Model
Figure 433 Legacy Host Port to Sink Functional Model
718 Figure 434 DRP to Legacy Device Port Functional Model
719 Figure 435 Legacy Host Port to DRP Functional Model
4.6 Power
720 Table 417 Precedence of power source usage
4.6.1 Power Requirements during USB Suspend
721 4.6.2 Vbus Power Provided Over a USB Type-C Cable
722 Figure 436 Sink Monitoring for Current in Pull-Up/Pull-Down CC Model
Table 418 USB Type-C Current Advertisement and PDP Equivalent
723 Figure 437 Sink Monitoring for Current in Current Source/Pull-Down CC Model
724 Figure 438 USB PD over CC Pins
Figure 439 USB PD BMC Signaling over CC
725 Table 419 Sink Maximum Current Limit When Attached to CTVPD
726 Table 420 Example Charge-Through VPD Sink Maximum Currents based on Vbus Impedance and GND Impedance
4.7 USB Hubs
727 4.8 Power Sourcing and Charging
4.8.1 DFP as a Power Source
728 Figure 440 USB Type-C Cable’s Output as a Function of Load for Non-PD-based USB Type-C Charging
729 Figure 441 0 – 3 A USB PD-based Charger USB Type-C Cable’s Output as a Function of Load
Figure 442 3 – 5 A USB PD-based Charger USB Type-C Cable’s Output as a Function of Load
4.8.2 Non-USB Charging Methods
4.8.3 Sinking Host
730 4.8.4 Sourcing Device
4.8.5 Charging a System with a Dead Battery
4.8.6 USB Type-C Multi-Port Chargers
733 Figure 443 Electronically Marked Cable with Vconn connected through the cable
4.9 Electronically Marked Cables
734 Figure 444 Electronically Marked Cable with SOP’ at both ends
Table 421 SOP’ and SOP” Timing
4.9.1 Parameter Values
4.9.2 Active Cables
4.10 Vconn-Powered Accessories (VPAs) and Vconn-Powered USB Devices (VPDs)
4.10.1 Vconn-Powered Accessories (VPAs)
735 4.10.2 Vconn-Powered USB Devices (VPDs)
736 Figure 445 Example Charge-Through Vconn-Power USB Device Use Case
Table 422 Charge-Through VPD CC Impedance (RccCON) Requirements
Table 423 CTVPD Charge-Through Port Vbus Bypass Requirements
4.11 Parameter Values
4.11.1 Termination Parameters
737 Table 424 Source CC Termination (Rp) Requirements
Table 425 Sink CC Termination (Rd) Requirements
Table 426 Powered Cable Termination Requirements
738 Table 427 CC Termination Requirements for Disabled state, ErrorRecovery state, and Unpowered Source
Table 428 SBU Termination Requirements
Table 429 Vbus and Vconn Timing Parameters
4.11.2 Timing Parameters
739 Figure 446 DRP Timing
Table 430 DRP Timing Parameters
740 Table 431 CC Timing
741 Table 432 CC Voltages on Source Side – Default USB
Table 433 CC Voltages on Source Side – 1.5 A @ 5 V
4.11.3 Voltage Parameters
742 Table 434 CC Voltages on Source Side – 3.0 A @ 5 V
Table 435 Voltage on Sink CC Pins (Default USB Type-C Current only)
Table 436 Voltage on Sink CC pins (Multiple Source Current Advertisements)
Table 437 CC Pin Clamping Voltage
743 5 USB4 Discovery and Entry
5.1 Overview of the Discovery and Entry Process
744 5.2 USB4 Functional Requirements
5.2.1 USB4 Host Functional Requirements
5.2.2 USB4 Device Functional Requirements
5.2.3 USB4 Alternate Mode Support
5.2.3.1 USB4 Alternate Mode Support on Hosts
5.2.3.2 USB4 Alternate Mode Support on Hubs and USB4-based Docks
5.3 USB4 Power Requirements
745 5.3.1 Source Power Requirements
5.3.2 Sink Power Requirements
5.3.3 Device Power Management Requirements
746 5.4 USB4 Discovery and Entry Flow Requirements
5.4.1 USB Type-C Initial Connection
5.4.2 USB Power Delivery Contract
5.4.3 USB4 Discovery and Entry Flow
747 Figure 51 USB4 Discovery and Entry Flow Model
748 Table 51 Certified Cables Where USB4-compatible Operation is Expected
750 5.4.4 USB4 Post-Entry Operation
5.5 USB4 Hub Connection Requirements
751 5.5.1 USB4 Hub Port Initial Connection Requirements
5.5.2 USB4 Hub UFP and Host Capabilities Discovery
752 5.5.3 Hub DFP Connection Requirements
5.5.4 Hub Ports Connection Behavior Flow Examples
753 Figure 52 USB4 Hub with USB4 Host and Device Connection Flow Alignment
754 Figure 53 USB4 Hub with USB 3.2 Host and USB4 Device Host Connection Flow
755 Figure 54 USB4 Hub with USB4 Host and USB 3.2 Device Connection Flow
756 Figure 55 USB4 Hub with USB 3.2 Host and Device Connection Flow
757 Figure 56 USB4 Hub with USB4 Host and DP Alt Mode Device Connection Flow
758 Figure 57 USB4 Hub with USB 3.2 Host and DP Alt Mode Device Connection Flow
5.5.5 Connecting to Downstream USB4 Hubs
5.5.6 Fallback Functional Requirements for USB4 Hubs
5.6 USB4 Device Connection Requirements
5.6.1 Fallback Mapping of USB4 Peripheral Functions to USB Device Class Types
759 Table 52 Fallback Mapping USB4 Peripheral Functions to USB Device Class Types
5.7 Parameter Values
5.7.1 Timing Parameters
760 Table 53 USB Billboard Device Class Availability Following USB4 Device Entry Failure
761 6 Active Cables
762 Table 61 Comparison of Active Cables
763 Table 62 Summary of Active Cable Features
6.1 USB Type-C State Machine
6.2 USB PD Requirements
764 Figure 61 Electronically Marked Short Active Cable with SOP’ Only
Figure 62 Electronically Marked Short Active Cable with SOP’ and SOP”
765 Figure 63 Electronically Marked Optically Isolated Active Cable
6.2.1 Active Cable USB PD Requirements
766 Table 63 USB4 Cable Identity Summary
6.2.2 USB PD Messages for OIAC
767 Table 64 OIAC USB PD Message Behavior on Initial Connection
768 Table 6-3 OIAC USB PD Message Behavior on Initial Connection, cont.
769 Table 65 OIAC USB PD Messages Which Do Not Traverse in Active State
770 Table 66 OIAC USB PD Messages Addressed to SOP Which Traverse the OIAC in the Active State
771 Figure 64 OIAC USB PD Message Forwarding
Table 67 OIAC USB PD Message Timing
772 Table 68 OIAC SOP Messages Which Terminate at the Cable Plug
774 Figure 65 OIAC Successful Data Role Swap
Figure 66 OIAC Rejected Data Role Swap
775 Figure 67 OIAC Wait Data Role Swap
Figure 68 OIAC Initiator Reject Data Role Swap
776 Figure 69 OIAC Initiator Wait Data Role Swap
6.2.3 Short Active Cable Behaviors in Response to Power Delivery Events
6.3 OIAC Connection Flow and State Diagrams
777 Table 69 Port and Plug Capabilities
6.3.1 OIAC Connection Flow – Discovery – Phase 1
778 Figure 610 OIAC Discovery – Phase 1
6.3.2 OIAC Connection Flow – Reboot – Phase 2
779 Figure 611 OIAC Reboot – Phase 2
6.3.3 OIAC Connection Flow – Configuration – Phase 3
780 Figure 612 OIAC Plug-A Configured as DFP – Phase 3
781 Figure 613 OIAC Plug-A Configured as UFP – Phase 3
782 Figure 614 OIAC Plug-A No Connection Possible Billboard – Phase 3
6.3.4 OIAC Connection State Diagram Plug-A
783 Figure 615 OIAC Plug-A State Diagram Part 1 (Phase 1 and 2)
784 Figure 616 OIAC Plug-A State Diagram Part 2 (Phase 3)
789 6.3.5 OIAC Connection State Diagram Plug-B
790 Figure 617 OIAC Plug-B State Diagram
794 Table 610 OIAC Sink_Capabilities PDO (SOP) on Initial Connection
6.4 Active Cable Power Requirements
6.4.1 Vbus Requirements
6.4.2 OIAC Vbus Requirements
795 Table 611 OIAC Sink_Capabilities_Extended PDO (SOP) on Initial Connection
Table 612 OIAC Sink RDO (SOP) on Initial Connection
6.4.3 USB PD Rules in Active State
796 Table 613 OIAC Active Sink RDO (SOP)
Table 614 OIAC Sink_Capabilities PDO (SOP) in Active
6.4.4 Vconn Requirements
6.5 Mechanical
6.5.1 Thermal
797 Table 615 Cable Temperature Requirements
6.5.2 Plug Spacing
6.6 Electrical Requirements
6.6.1 Shielding Effectiveness Requirement
6.6.2 Low Speed Signal Requirement
798 Table 616 Summary of Active Cable Features
6.6.3 USB 2.0
799 Figure 618 Active Cable Topologies
6.6.4 USB 3.2
800 Table 617 Active Cable Power-on Requirements
Table 618 OIAC Maximum USB 3.2 U0 Delay
801 Figure 619 Illustrations of Usages for OIAC That Require an Adapter or Hub
Table 619 Usages for OIAC That Require an Adapter or Hub
802 Figure 620 SuperSpeed USB Electrical Test Points
Table 620 USB 3.2 U-State Requirements
803 Figure 621 SuperSpeed USB Compliance Test Setup
Table 621 Active Cable USB 3.2 Stressed Source Swing, TP1
804 Table 622 Active Cable USB 3.2 Stressed Source Jitter, TP1
Table 623 Active Cable USB 3.2 Input Swing at TP2 (Informative)
805 Table 624 Active Cable USB 3.2 Output Swing at TP3 (Informative)
6.6.5 USB4
806 Figure 622 Compliance Points Definition
Table 625 Compliance Points Definition
807 Figure 623 RX Differential Return-Loss Mask
808 Figure 624 Active Cable Compliance Test Setup
Table 626 Re-timer-based USB4 Active Cable Output Specifications Applied for All Speeds (at TP3’)
810 Figure 625 Example for Transmitter Frequency Variation During Clock Switching
Table 627 Stressed Received Conditions for USB4 Gen2 and Gen3 Cable Compliance Testing (at TP2)
811 Figure 626 Active Cable Functional Test Setup
812 Figure 627 Linear Re-driver-based Active Cable Compliance Setup
813 Table 628 Linear Re-driver-based Active Cable Output Parameters
Table 629 Input Signal at TP2 for Compliance Testing
815 Figure 628 Gain Parameters Specified for the Linear Re-driver Active Cable
816 Figure 629 OUTPUT_NOISE Limit Versus ILfitatNq
818 Table 630 USB4 CL-State Requirements
6.6.6 Return Loss
6.7 Active Cables That Support Alternate Modes
6.7.1 Discover SVIDs
819 6.7.2 Discover Modes
6.7.3 Enter/Exit Modes
6.7.4 Power in Alternate Modes
820 Table A1 USB Type-C Analog Audio Pin Assignments
A Audio Adapter Accessory Mode
A.1 Overview
A.2 Detail
821 Table A2 USB Type-C Analog Audio Pin Electrical Parameter Ratings
A.3 Electrical Requirements
822 A.4 Example Implementations
A.4.1 Passive 3.5 mm to USB Type-C Adapter – Single Pole Detection Switch
823 Figure A1 Example Passive 3.5 mm to USB Type-C Adapter
A.4.2 3.5 mm to USB Type-C Adapter Supporting 500 mA Charge-Through
824 Figure A2 Example 3.5 mm to USB Type-C Adapter Supporting 500 mA Charge-Through
825 Figure B1 USB Type-C Debug Accessory Layered Behavior
B Debug Accessory Mode
B.1 Overview
B.2 Functional
826 Figure B2 DTS Plug Interface
Table B1 DTS to TS Port Interoperability
B.2.1 Signal Summary
B.2.2 Port Interoperability
B.2.3 Debug Accessory Mode Entry
827 Figure B3 Connection State Diagram: DTS Source
B.2.4 Connection State Diagrams
828 Figure B4 Connection State Diagram: DTS Sink
Figure B5 Connection State Diagram: DTS DRP
833 Figure B6 TS Sink Power Sub-States
Table B2 Rp/Rp Charging Current Values for a DTS Source
835 Table B3 Mandatory and Optional States
B.2.5 DTS Port Interoperability Behavior
843 B.2.6 Orientation Detection
844 B.3 Security/Privacy Requirements:
845 C USB Type-C Digital Audio
C.1 Overview
C.2 USB Type-C Digital Audio Specifications
847 D Thermal Design Considerations for Active Cables
D.1 Introduction
D.2 Model
D.2.1 Assumptions
848 Figure D1 Active Cable Model (Single Port, Top Mount Receptacle)
Figure D2 Model Architecture
D.2.2 Model Architecture
D.2.3 Heat Sources
849 Figure D3 Heat Sources and Heat Flow Paths
Table D1 Heat Sources and Heat Dissipation Example (1.5 W cable and 5 A)
D.2.4 Heat Flow
850 Figure D4 Vertically Stacked Horizontal Connectors 3×1 Configuration (VERT)
Table D2 USB 3.2 Active Cable Design Single Port Case Study at 35 °C Ambient and 60 °C Thermal Boundary (Single Lane)
D.3 USB 3.2 Single Lane Active Cable
D.3.1 USB 3.2 Single-Lane Active Cable Design Considerations
851 Figure D5 Horizontally Stacked Vertical Connectors 1×3 Configuration (HZ90)
Figure D6 Horizontally Stacked Horizontal Connector 1×3 Configuration (HORZ)
852 Figure D7 USB 3.2 Single-Lane 3A Active Cable in a 3-Port Configuration
Figure D8 USB 3.2 Single-Lane 5A Active Cable in a 3-Port Configuration
D.4 Dual-Lane Active Cables
853 Table D3 USB 3.2 Active Cable Design Single Port Case Study at 35 °C Ambient and 60 °C Thermal Boundary (Dual Lane)
D.4.1 USB 3.2 Dual-Lane Active Cable Design Considerations
854 Figure D9 Impact of Over-mold Power PO and Thermal Boundary Temperature TMB at 3 A Vbus in a Single Port Configuration
Figure D10 Impact of Over-mold Power PO and Thermal Boundary Temperature TMB at 5 A Vbus in a Single Port Configuration
855 Figure D11 USB 3.2 Active Cable Dongle Design (One End Shown)
Figure D12 USB 3.2 Dual-Lane 3A Active Cable in a 3-Port Configuration
D.4.2 USB 3.2 Dual-Lane Active Cable in a Multi-Port Configuration
856 Figure D13 USB 3.2 Dual-Lane 5A Active Cable in a 3-Port Configuration
D.5 USB 3.2 Host and Device Design Considerations
D.5.1 Heat Spreading or Heat Sinking from Host or Device
857 Figure D14 Example: Additional Heat Spreader on Receptacle in Host or Device
Figure D15 Example: Heat Sinking by Chassis of Host or Device
D.5.2 Motherboard Temperature Control
D.5.3 Wider Port Spacing for Multi-Port Applications
D.5.4 Power Policies
858 E Alternate Modes
E.1 Alternate Mode Architecture
E.2 Alternate Mode Requirements
859 Figure E1 Pins Available for Reconfiguration over the Full-Featured Cable
Figure E2 Pins Available for Reconfiguration for Direct Connect Applications
E.2.1 Alternate Mode Pin Reassignment
E.2.2 Alternate Mode Electrical Requirements
861 Figure E3 Alternate Mode Implementation using a USB Type-C to USB Type-C Cable
Figure E4 Alternate Mode Implementation using a USB Type-C to Alternate Mode Cable or Device
862 Table E1 USB Safe State Electrical Requirements
Table E2 USB Billboard Device Class Availability Following Alternate Mode Entry Failure
Table E3 Alternate Mode Signal Noise Ingression Requirements
E.3 Parameter Values
E.4 Example Alternate Mode – USB DisplayPort™ Dock
863 Figure E5 USB DisplayPort Dock Example
E.4.1 USB DisplayPort™ Dock Example
E.4.2 Functional Overview
864 E.4.3 Operational Summary
866 F Thunderbolt 3 Compatibility Discovery and Entry
F.1 TBT3 Compatibility Mode Functional Requirements
F.1.1 TBT3-Compatible Power Requirements
F.1.2 TBT3-Compatible Host Requirements
F.1.3 TBT3-Compatible Device Upstream Requirements
F.1.4 TBT3-Compatible Device Downstream Requirements
867 F.1.5 TBT3-Compatible Self-Powered Device Without Predefined Upstream Port Rules
F.1.6 TBT3-Compatible Devices with a Captive Cable
F.2 TBT3 Discovery and Entry Flow
868 Figure F1 TBT3 Discovery Flow
869 Table F1 TBT3 Passive Cable Discover Identity VDO Responses
F.2.1 TBT3 Passive Cable Discover Identity Responses
870 Table F2 TBT3 Passive Cable VDO for USB PD Revision 2.0, Version 1.3
Table F3 TBT3 Passive Cable VDO for USB PD Revision 3.0, Version 1.2
871 Table F4 TBT3 Active Cable Discover Identity VDO Responses
F.2.2 TBT3 Active Cable Discover Identity Responses
872 Table F5 TBT3 Active Cable VDO for USB PD Revision 2.0, Version 1.3
873 Table F6 TBT3 Active Cable VDO 1 for USB PD Revision 3.0, Version 1.2
Table F7 TBT3 Active Cable VDO 2 for USB PD Revision 3.0, Version 1.2
874 Table F8 TBT3 Device Discover Identity VDO Responses
F.2.3 TBT3 Device Discover Identity Responses
875 Table F9 TBT3 Discover SVID VDO Responses
F.2.4 TBT3 Discover SVID Responses
876 Table F10 TBT3 Device Discover Mode VDO Responses
F.2.5 TBT3 Device Discover Mode Responses
877 Table F11 TBT3 Cable Discover Mode VDO Responses
F.2.6 TBT3 Cable Discover Mode Responses
878 Table F12 TBT3 Cable Enter Mode Command
F.2.7 TBT3 Cable Enter Mode Command
879 Table F13 TBT3 Device Enter Mode Command
F.2.8 TBT3 Device Enter Mode Command
880 Table F14 TBT3 Cable Functional Difference Summary
F.2.9 TBT3 Cable Functional Difference Summary
881 G Extracting Pulse Response from Sampled Data and Calculating Non-Linearity Noise
882 Table G1 Linear Fit Pulse Extraction Parameters
883 Figure H1 Arcing Damage to USB Type-C Vbus Contacts
H USB PD High-Voltage Design Considerations
H.1 Potential for Arcing Damage During Cable Withdrawal
H.2 Arcing During USB Type-C Cable Withdrawal
884 Figure H2 Arcing Due to Discharge
885 H.3 Mitigating Arcing Damage During Cable Withdrawal Due to Sink Discharge
886 Figure H3 Arcing Prevention During Sink Discharge by Limiting Slew Rate
H.3.1 Limiting Sink Discharge Rate
887 H.3.2 Load Removal
888 Figure H4 Arcing Prevention During Sink Discharge by Load Removal
889 H.3.3 Limiting Source Current Capability

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