BS EN IEC 62680-1-3:2018
$215.11
Universal serial bus interfaces for data and power – Common components. USB Type-CTM Cable and Connector Specification
| Published By | Publication Date | Number of Pages |
| BSI | 2018 | 264 |
This specification is intended as a supplement to the existing USB 2.0, USB 3.1 and USB Power Delivery specifications. It addresses only the elements required to implement and support the USB Type-C receptacles, plugs and cables.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 5 | FOREWORD |
| 7 | INTRODUCTION |
| 10 | CONTENTS |
| 23 | 1 Introduction 1.1 Purpose 1.2 Scope |
| 24 | 1.3 Related Documents 1.4 Conventions 1.4.1 Precedence 1.4.2 Keywords |
| 25 | 1.4.3 Numbering 1.5 Terms and Abbreviations |
| 28 | 2 Overview 2.1 Introduction |
| 29 | 2.2 USB Type-C Receptacles, Plugs and Cables Figures Figure 2-1 USB Type-C Receptacle Interface (Front View) Figure 2-2 USB Full-Featured Type-C Plug Interface (Front View) |
| 31 | 2.3 Configuration Process 2.3.1 Source-to-Sink Attach/Detach Detection 2.3.2 Plug Orientation/Cable Twist Detection |
| 32 | 2.3.3 Initial Power (Source-to-Sink) Detection and Establishing the Data (Host-to-Device) Relationship |
| 33 | 2.3.4 USB Type-C Vbus Current Detection and Usage 2.3.5 USB PD Communication 2.3.6 Functional Extensions |
| 34 | 2.4 Vbus 2.5 Vconn Table 2-1 Summary of power supply options |
| 35 | 2.6 Hubs 3 Mechanical 3.1 Overview 3.1.1 Compliant Connectors 3.1.2 Compliant Cable Assemblies 3.1.3 Compliant USB Type-C to Legacy Cable Assemblies Tables Table 3-1 USB Type-C Standard Cable Assemblies |
| 36 | 3.1.4 Compliant USB Type-C to Legacy Adapter Assemblies Table 3-2 USB Type-C Legacy Cable Assemblies |
| 37 | 3.2 USB Type-C Connector Mating Interfaces 3.2.1 Interface Definition Table 3-3 USB Type-C Legacy Adapter Assemblies |
| 40 | Figure 3-1 USB Type-C Receptacle Interface Dimensions |
| 43 | Figure 3-2 Reference Design USB Type-C Plug External EMC Spring Contact Zones |
| 44 | Figure 3-3 USB Full-Featured Type-C Plug Interface Dimensions |
| 47 | Figure 3-4 Reference Footprint for a USB Type-C Vertical Mount Receptacle (Informative) |
| 48 | Figure 3-5 Reference Footprint for a USB Type-C Dual-Row SMT Right Angle Receptacle (Informative) |
| 49 | Figure 3-6 Reference Footprint for a USB Type-C Hybrid Right-Angle Receptacle (Informative) |
| 50 | Figure 3-7 Reference Footprint for a USB Type-C Mid-Mount Dual-Row SMT Receptacle (Informative) |
| 51 | Figure 3-8 Reference Footprint for a USB Type-C Mid-Mount Hybrid Receptacle (Informative) |
| 52 | Figure 3-9 Reference Footprint for a USB 2.0 Type-C Through Hole Right Angle Receptacle (Informative) |
| 53 | Figure 3-10 Reference Footprint for a USB 2.0 Type-C Single Row Right Angle Receptacle (Informative) |
| 55 | Figure 3-11 USB 2.0 Type-C Plug Interface Dimensions |
| 58 | Figure 3-12 USB Type-C Plug EMC Shielding Spring Tip Requirements |
| 59 | 3.2.2 Reference Designs Figure 3-13 Reference Design of Receptacle Mid-Plate |
| 60 | Figure 3-14 Reference Design of the Retention Latch Figure 3-15 Illustration of the Latch Soldered to the Paddle Card Ground |
| 61 | Figure 3-16 Reference Design of the USB Full-Featured Type-C Plug Internal EMC Spring |
| 62 | Figure 3-17 Reference Design of the USB 2.0 Type-C Plug Internal EMC Spring |
| 64 | Figure 3-18 Reference Design of Internal EMC Pad |
| 65 | Figure 3-19 Reference Design of a USB Type-C Receptacle with External EMC Springs |
| 66 | Figure 3-20 Reference Design for a USB Full-Featured Type-C Plug Paddle Card |
| 67 | 3.2.3 Pin Assignments and Descriptions Table 3-4 USB Type-C Receptacle Interface Pin Assignments |
| 68 | 3.3 Cable Construction and Wire Assignments 3.3.1 Cable Construction (Informative) Table 3-5 USB Type-C Receptacle Interface Pin Assignments for USB 2.0-only Support |
| 69 | Figure 3-21 Illustration of a USB Full-Featured Type-C Cable Cross Section,a Coaxial Wire Example with Vconn Figure 3-22 Illustration of a USB Full-Featured Type-C Cable Cross Section,a Coaxial Wire Example without Vconn |
| 70 | 3.3.2 Wire Assignments Table 3-6 USB Type-C Standard Cable Wire Assignments |
| 71 | 3.3.3 Wire Gauges and Cable Diameters (Informative) Table 3-7 USB Type-C Cable Wire Assignments for Legacy Cables/Adapters |
| 72 | Table 3-8 Reference Wire Gauges for standard USB Type-C Cable Assemblies Table 3-9 Reference Wire Gauges for USB Type-C to Legacy Cable Assemblies |
| 73 | 3.4 Standard USB Type-C Cable Assemblies 3.4.1 USB Full-Featured Type-C Cable Assembly Figure 3-23 USB Full-Featured Type-C Standard Cable Assembly |
| 74 | 3.4.2 USB 2.0 Type-C Cable Assembly Table 3-10 USB Full-Featured Type-C Standard Cable Assembly Wiring |
| 75 | 3.4.3 USB Type-C Captive Cable Assemblies 3.5 Legacy Cable Assemblies Table 3-11 USB 2.0 Type-C Standard Cable Assembly Wiring |
| 76 | 3.5.1 USB Type-C to USB 3.1 Standard-A Cable Assembly Figure 3-24 USB Type-C to USB 3.1 Standard-A Cable Assembly |
| 77 | Table 3-12 USB Type-C to USB 3.1 Standard-A Cable Assembly Wiring |
| 78 | 3.5.2 USB Type-C to USB 2.0 Standard-A Cable Assembly Figure 3-25 USB Type-C to USB 2.0 Standard-A Cable Assembly Table 3-13 USB Type-C to USB 2.0 Standard-A Cable Assembly Wiring |
| 79 | 3.5.3 USB Type-C to USB 3.1 Standard-B Cable Assembly Figure 3-26 USB Type-C to USB 3.1 Standard-B Cable Assembly |
| 80 | Table 3-14 USB Type-C to USB 3.1 Standard-B Cable Assembly Wiring |
| 81 | 3.5.4 USB Type-C to USB 2.0 Standard-B Cable Assembly Figure 3-27 USB Type-C to USB 2.0 Standard-B Cable Assembly Table 3-15 USB Type-C to USB 2.0 Standard-B Cable Assembly Wiring |
| 82 | 3.5.5 USB Type-C to USB 2.0 Mini-B Cable Assembly Figure 3-28 USB Type-C to USB 2.0 Mini-B Cable Assembly Table 3-16 USB Type-C to USB 2.0 Mini-B Cable Assembly Wiring |
| 83 | 3.5.6 USB Type-C to USB 3.1 Micro-B Cable Assembly Figure 3-29 USB Type-C to USB 3.1 Micro-B Cable Assembly |
| 84 | Table 3-17 USB Type-C to USB 3.1 Micro-B Cable Assembly Wiring |
| 85 | 3.5.7 USB Type-C to USB 2.0 Micro-B Cable Assembly Figure 3-30 USB Type-C to USB 2.0 Micro-B Cable Assembly Table 3-18 USB Type-C to USB 2.0 Micro-B Cable Assembly Wiring |
| 86 | 3.6 Legacy Adapter Assemblies 3.6.1 USB Type-C to USB 3.1 Standard-A Receptacle Adapter Assembly Figure 3-31 USB Type-C to USB 3.1 Standard-A Receptacle Adapter Assembly |
| 87 | Table 3-19 USB Type-C to USB 3.1 Standard-A Receptacle Adapter Assembly Wiring |
| 88 | 3.6.2 USB Type-C to USB 2.0 Micro-B Receptacle Adapter Assembly Figure 3-32 USB Type-C to USB 2.0 Micro-B Receptacle Adapter Assembly Table 3-20 USB Type-C to USB 2.0 Micro-B Receptacle Adapter Assembly Wiring |
| 89 | 3.7 Electrical Characteristics 3.7.1 Raw Cable (Informative) Table 3-21 Differential Insertion Loss Examples for USB SuperSpeedwith Twisted Pair Construction |
| 90 | 3.7.2 USB Type-C to Type-C Passive Cable Assemblies (Normative) Figure 3-33 Illustration of Test Points for a Mated Cable Assembly Table 3-22 Differential Insertion Loss Examples for USB SuperSpeedwith Coaxial Construction |
| 91 | Figure 3-34 Recommended Differential Insertion Loss Requirement Figure 3-35 Recommended Differential Return Loss Requirement |
| 92 | Figure 3-36 Recommended Differential Crosstalk Requirement Figure 3-37 Recommended Differential Near-End and Far-End Crosstalk Requirement between USB D+/D− Pair and USB SuperSpeed Pair |
| 93 | Figure 3-38 Illustration of Insertion Loss Fit at Nyquist Frequency |
| 94 | Figure 3-39 Input Pulse Spectrum |
| 95 | Figure 3-40 IMR Limit as Function of ILfitatNq |
| 97 | Figure 3-41 IRL Limit as Function of ILfitatNq |
| 98 | Figure 3-42 Differential-to-Common-Mode Conversion Requirement Table 3-23 Electrical Requirements for CC and SBU wires |
| 99 | Figure 3-43 Requirement for Differential Coupling between CC and D+/D− Table 3-24 Coupling Matrix for Low Speed Signals |
| 100 | Figure 3-44 Requirement for Single-Ended Coupling between CCand D− in USB 2.0 Type-C Cables Figure 3-45 Requirement for Single-Ended Coupling between CCand D− in USB Full-Featured Type-C Cables |
| 101 | Figure 3-46 Requirement for Differential Coupling between Vbus and D+/D− Table 3-25 Maximum Mutual Inductance (M) between Vbus and Low Speed Signal Lines |
| 102 | Figure 3-47 Requirement for Single-Ended Coupling between SBU_A and SBU_B Figure 3-48 Requirement for Single-Ended Coupling between SBU_A/SBU_B and CC |
| 103 | Figure 3-49 Requirement for Coupling between SBU_A and differential D+/D−,and SBU_B and differential D+/D− Table 3-26 USB D+/D− Signal Integrity Requirements for USB Type-C to USB Type-C Passive Cable Assemblies |
| 104 | 3.7.3 Mated Connector (Informative) Figure 3-50 Illustration of USB Type-C Mated Connector |
| 105 | Figure 3-51 Recommended Impedance Limits of a USB Type-C Mated Connector |
| 106 | Figure 3-52 Recommended Ground Void Dimensions for USB Type-C Receptacle |
| 107 | Table 3-27 USB Type-C Mated Connector Recommended Signal Integrity Characteristics (Informative) |
| 108 | 3.7.4 USB Type-C to Legacy Cable Assemblies (Normative) Figure 3-53 Recommended Differential Near-End and Far-End Crosstalk Limitsbetween D+/D− Pair and SuperSpeed Pairs Figure 3-54 Recommended Limits for Differential-to-Common-Mode Conversion |
| 109 | Table 3-28 USB D+/D− Signal Integrity Requirements for USB Type-Cto Legacy USB Cable Assemblies |
| 110 | Table 3-29 Design Targets for USB Type-C to USB 3.1 Gen 2 Legacy Cable Assemblies (Informative) Table 3-30 USB Type-C to USB 3.1 Gen 2 Legacy Cable Assembly Signal Integrity Requirements (Normative) |
| 111 | Figure 3-55 IMR Limit as Function of ILfitatNq for USB Type-C to Legacy Cable Assembly |
| 112 | 3.7.5 USB Type-C to USB Legacy Adapter Assemblies (Normative) Figure 3-56 IRL Limit as Function of ILfitatNq for USB Type-C to Legacy Cable Assembly |
| 113 | Table 3-31 USB D+/D− Signal Integrity Requirements for USB Type-C to Legacy USB Adapter Assemblies (Normative) Table 3-32 Design Targets for USB Type-C to USB 3.1 Standard-A Adapter Assemblies (Informative) |
| 114 | Table 3-33 USB Type-C to USB 3.1 Standard-A Receptacle Adapter Assembly Signal Integrity Requirements (Normative) |
| 115 | 3.7.6 Shielding Effectiveness Requirements (Normative) Figure 3-57 Cable Assembly Shielding Effectiveness Testing |
| 116 | Figure 3-58 Shielding Effectiveness Pass/Fail Criteria |
| 117 | 3.7.7 DC Electrical Requirements (Normative) Figure 3-59 LLCR Measurement Diagram |
| 119 | Figure 3-60 Temperature Measurement Point Table 3-34 Current Rating Test PCB |
| 120 | 3.8 Mechanical and Environmental Requirements (Normative) 3.8.1 Mechanical Requirements Figure 3-61 Example Current Rating Test Fixture Trace Configuration |
| 122 | Figure 3-62 Example of 4-Axis Continuity Test Fixture |
| 123 | Table 3-35 Force and Moment Requirements |
| 124 | Figure 3-63 Example Wrenching Strength Test Fixture for Plugs without Overmold |
| 125 | Figure 3-64 Reference Wrenching Strength Continuity Test Fixture |
| 126 | 3.8.2 Environmental Requirements Figure 3-65 Example of Wrenching Strength Test Mechanical Failure Point Figure 3-66 Wrenching Strength Test with Cable in Fixture |
| 127 | Table 3-36 Environmental Test Conditions |
| 128 | 3.9 Docking Applications (Informative) Table 3-37 Reference Materials |
| 129 | 3.10 Implementation Notes and Design Guides 3.10.1 EMC Management (Informative) Figure 3-67 USB Type-C Cable Receptacle Flange Example |
| 130 | Figure 3-68 EMC Guidelines for Side Latch and Mid-plate Figure 3-69 EMC Finger Connections to Plug Shell |
| 131 | 3.10.2 Stacked and Side-by-Side Connector Physical Spacing (Informative) Figure 3-70 EMC Pad Connections to Receptacle Shell Figure 3-71 Examples of Connector Apertures |
| 132 | 3.10.3 Cable Mating Considerations (Informative) Figure 3-72 Recommended Minimum Spacing between Connectors Figure 3-73 Recommended Minimum Plug Overmold Clearance |
| 133 | 4 Functional 4.1 Signal Summary Figure 3-74 Cable Plug Overmold and an Angled Surface Table 4-1 USB Type-C List of Signals |
| 134 | 4.2 Signal Pin Descriptions 4.2.1 SuperSpeed USB Pins 4.2.2 USB 2.0 Pins 4.2.3 Auxiliary Signal Pins 4.2.4 Power and Ground Pins 4.2.5 Configuration Pins |
| 135 | 4.3 Sideband Use (SBU) 4.4 Power and Ground 4.4.1 IR Drop Figure 4-1 Cable IR Drop |
| 136 | 4.4.2 Vbus Figure 4-2 Cable IR Drop for powered cables Table 4-2 Vbus Source Characteristics |
| 137 | 4.4.3 Vconn Table 4-3 Vbus Sink Characteristics |
| 138 | Table 4-4 USB Type-C Source Port’s Vconn Requirements Summary Table 4-5 Vconn Source Characteristics |
| 139 | Table 4-6 Cable Vconn Sink Characteristics |
| 140 | Table 4-7 Vconn-Powered Accessory (VPA) Sink Characteristics |
| 141 | 4.5 Configuration Channel (CC) 4.5.1 Architectural Overview Table 4-8 Vconn-Powered USB Device (VPD) Sink Characteristics |
| 143 | Figure 4-3 Logical Model for Data Bus Routing across USB Type-C-based Ports Figure 4-4 Logical Model for USB Type-C-based Ports for the Direct Connect Device |
| 144 | Table 4-9 USB Type-C-based Port Interoperability |
| 145 | Figure 4-5 Pull-Up/Pull-Down CC Model Figure 4-6 Current Source/Pull-Down CC Model |
| 146 | Table 4-10 Source Perspective |
| 147 | Table 4-11 Source (Host) and Sink (Device) Behaviors by State |
| 148 | Figure 4-7 Source Functional Model for CC1 and CC2 |
| 149 | Figure 4-8 Source Functional Model Supporting USB PD PR_Swap |
| 150 | Figure 4-9 Sink Functional Model for CC1 and CC2 |
| 151 | Figure 4-10 Sink Functional Model Supporting USB PD PR_Swap and Vconn_Swap |
| 152 | Figure 4-11 DRP Functional Model for CC1 and CC2 |
| 154 | Table 4-12 USB PD Swapping Port Behavior Summary |
| 155 | Table 4-13 Power Role Behavioral Model Summary |
| 156 | 4.5.2 CC Functional and Behavioral Requirements |
| 157 | Figure 4-12 Connection State Diagram: Source |
| 158 | Figure 4-13 Connection State Diagram: Sink |
| 159 | Figure 4-14 Connection State Diagram: Sink with Accessory Support |
| 160 | Figure 4-15 Connection State Diagram: DRP |
| 161 | Figure 4-16 Connection State Diagram: DRP with Accessory and Try.SRC Support |
| 162 | Figure 4-17 Connection State Diagram: DRP with Accessory and Try.SNK Support |
| 163 | Table 4-14 Source Port CC Pin State Table 4-15 Sink Port CC Pin State |
| 178 | Figure 4-18 Sink Power Sub-States |
| 180 | Figure 4-19 Passive Cable eMarker State Diagram Figure 4-20 Active Cable eMarker State Diagram |
| 183 | Table 4-16 Mandatory and Optional States |
| 185 | 4.5.3 USB Port Interoperability Behavior Figure 4-21 Source to Sink Functional Model |
| 186 | Figure 4-22 Source to DRP Functional Model |
| 188 | Figure 4-23 DRP to Sink Functional Model |
| 189 | Figure 4-24 DRP to DRP Functional Model – CASE 1 |
| 190 | Figure 4-25 DRP to DRP Functional Model – CASE 2 & 3 |
| 193 | Figure 4-26 Source to Source Functional Model Figure 4-27 Sink to Sink Functional Model |
| 194 | Figure 4-28 DRP to VPD Model |
| 195 | Figure 4-29 Source to Legacy Device Port Functional Model |
| 196 | Figure 4-30 Legacy Host Port to Sink Functional Model |
| 197 | Figure 4-31 DRP to Legacy Device Port Functional Model |
| 198 | 4.6 Power Figure 4-32 Legacy Host Port to DRP Functional Model |
| 199 | 4.6.1 Power Requirements during USB Suspend Table 4-17 Precedence of power source usage |
| 200 | 4.6.2 Vbus Power Provided Over a USB Type-C Cable |
| 201 | Figure 4-33 Sink Monitoring for Current in Pull-Up/Pull-Down CC Model Table 4-18 USB Type-C Current Advertisement and PDP Labeling |
| 202 | Figure 4-34 Sink Monitoring for Current in Current Source/Pull-Down CC Model |
| 203 | Figure 4-35 USB PD over CC Pins Figure 4-36 USB PD BMC Signaling over CC |
| 204 | 4.7 USB Hubs 4.8 Power Sourcing and Charging |
| 205 | 4.8.1 DFP as a Power Source |
| 206 | Figure 4-37 USB Type-C Cable’s Output as a Function of Loadfor Non-PD-based USB Type-C Charging |
| 207 | Figure 4-38 0 – 3 A USB PD-based Charger USB Type-C Cable’s Outputas a Function of Load Figure 4-39 3 – 5 A USB PD-based Charger USB Type-C Cable’s Outputas a Function of Load |
| 208 | 4.8.2 Non-USB Charging Methods 4.8.3 Sinking Host 4.8.4 Sourcing Device 4.8.5 Charging a System with a Dead Battery 4.8.6 USB Type-C Multi-Port Chargers |
| 211 | 4.9 Electronically Marked Cables Figure 4-40 Electronically Marked Cable with Vconn connected through the cable |
| 212 | 4.9.1 Parameter Values 4.9.2 Active Cables 4.10 Vconn-Powered Accessories (VPAs) and Vconn-Powered USB Devices (VPDs) Figure 4-41 Electronically Marked Cable with SOP’ at both ends Table 4-19 SOP’ and SOP” Timing |
| 213 | 4.10.1 Vconn-Powered Accessories (VPAs) 4.10.2 Vconn-Powered USB Devices (VPDs) 4.11 Parameter Values 4.11.1 Termination Parameters |
| 214 | Table 4-20 Source CC Termination (Rp) Requirements Table 4-21 Sink CC Termination (Rd) Requirements Table 4-22 Powered Cable Termination Requirements |
| 215 | Table 4-23 Sink CC Termination Requirements Table 4-24 SBU Termination Requirements |
| 216 | 4.11.2 Timing Parameters Table 4-25 Vbus and Vconn Timing Parameters |
| 217 | Figure 4-42 DRP Timing Table 4-26 DRP Timing Parameters |
| 218 | Table 4-27 CC Timing |
| 219 | 4.11.3 Voltage Parameters Table 4-28 CC Voltages on Source Side – Default USB Table 4-29 CC Voltages on Source Side – 1.5 A @ 5 V Table 4-30 CC Voltages on Source Side – 3.0 A @ 5 V Table 4-31 Voltage on Sink CC Pins (Default USB Type-C Current only) |
| 220 | 5 Functional Extensions 5.1 Alternate Modes 5.1.1 Alternate Mode Architecture Table 4-32 Voltage on Sink CC pins (Multiple Source Current Advertisements) |
| 221 | 5.1.2 Alternate Mode Requirements |
| 222 | Figure 5-1 Pins Available for Reconfiguration over the Full-Featured Cable Figure 5-2 Pins Available for Reconfiguration for Direct Connect Applications |
| 223 | Figure 5-3 Alternate Mode Implementation using a USB Type-C to USB Type-C Cable |
| 224 | Figure 5-4 Alternate Mode Implementation using a USB Type-Cto Alternate Mode Cable or Device |
| 225 | 5.1.3 Parameter Values Table 5-1 USB Safe State Electrical Requirements Table 5-2 USB Billboard Device Class Availability Following Alternate Mode Entry Failure Table 5-3 Alternate Mode Signal Noise Ingression Requirements |
| 226 | 5.1.4 Example Alternate Mode – USB DisplayPort™ Dock Figure 5-5 USB DisplayPort Dock Example |
| 228 | 5.2 Managed Active Cables 5.2.1 Requirements for Managed Active Cables that respond to SOP’ and SOP” |
| 229 | 5.2.2 Cable Message Structure 5.2.3 Modal Cable Management Figure 5-6 Managed Active Cable |
| 231 | A Audio Adapter Accessory Mode A.1. Overview A.2. Detail |
| 232 | Table A1 USB Type-C Analog Audio Pin Assignments |
| 233 | A.3. Electrical Requirements Table A2 USB Type-C Analog Audio Pin Electrical Parameter Ratings |
| 234 | A.4. Example Implementations A.4.1. Passive 3.5 mm to USB Type-C Adapter – Single Pole Detection Switch A.4.2. 3.5 mm to USB Type-C Adapter Supporting 500 mA Charge-Through Figure A1 Example Passive 3.5 mm to USB Type-C Adapter |
| 236 | B Debug Accessory Mode B.1. Overview B.2. Functional Figure A2 Example 3.5 mm to USB Type-C Adapter Supporting 500 mA Charge-Through |
| 237 | Figure B1 USB Type-C Debug Accessory Layered Behavior |
| 238 | B.2.1. Signal Summary B.2.2. Port Interoperability B.2.3. Debug Accessory Mode Entry Figure B2 DTS Plug Interface Table B1 DTS to TS Port Interoperability |
| 239 | B.2.4. Connection State Diagrams |
| 240 | Figure B3 Connection State Diagram: DTS Source |
| 241 | Figure B4 Connection State Diagram: DTS Sink |
| 242 | Figure B5 Connection State Diagram: DTS DRP |
| 247 | Figure B6 TS Sink Power Sub-States Table B2 Rp/Rp Charging Current Values for a DTS Source |
| 249 | B.2.5. DTS Port Interoperability Behavior Table B3 Mandatory and Optional States |
| 260 | B.2.6. Orientation Detection B.3. Security/Privacy Requirements: |
| 261 | C USB Type-C Digital Audio C.1. Overview C.2. USB Type-C Digital Audio Specifications |
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