This document provides an overview and specifications for USB Type-C connectors and cables. It discusses the motivation for USB Type-C including making connectors smaller, more robust, and easier to use. The document then covers mechanical specifications for plugs, receptacles, and cable assemblies. It also discusses electrical characteristics, functional behaviors like configuration channel purposes and connection states, and extensions like alternate modes and audio adapter access.

1. Ting.Ou
2015.11.06
ting594@gmail.com
USB Type-C Spec. R1.1
Introduction

2. Topic
 Motivation
 Overview
 Mechanical
 Functional
 Functional Extensions
 Audio Adapter Accessory Mode

3. Motivation
 Existing USB host connector was too large:
 Met smaller, thinner and lighter form-factors trend.
 Enhance USB connector robustness & usability.
 Met the usability and robustness requirements for
newer platform.
 Exiting connector are difficult to use:
 Enhance ease of use for user confusion for plug and
cable orientation.
 The USB cable/connector ecosystem is moving
forward to address the emerging form-factor/ID
design trends with the new USB Type-C Connector
 Extending and advancing USB as the peripheral
connection of choice.

4. Overview
 This specification defines the USB Type-C™
receptacles, plug and cables.
 Mechanical definition.
 Power Consumption Spec.
 Electrical Characteristics.
 Compatible with existing USB interface electrical
and functional specifications.
 Functional behavior. (CC, Connection States)
 Extend Functional behavior. (Alternate modes)

5. Overview
 USB Type-C Architecture

6. Overview
 Key Features:
 Entirely new design
 Total 24 pins number for full feature
 Smaller Size Connector
 Receptacle opening: 8.34mmx2.56mm
 Usability Enhancement
 Reversible plug orientation & cable direction
 Support Scalable Power Charging
 PD capacity: 3A for standard cables, 5A for connectors.
 Improved EMI & RFI mitigation
 Internal Spring, Pads & Shielding
 Alternate mode support
 Alternate mode support
 Role swapping support
 PR_Swap, DR_Swap, VCONN_Swap

7. Mechanical
 Cable Plug Form Factors

8. Mechanical
 Connector Interface Pin-out

9. Overview
 Connector Interface Pin definition

10. Mechanical
 Cable Construction

11. Power Consumption
 Summary of Power Spec.

12. Power Consumption
 Power Spec. for Type-C cable

13. Power Consumption
 Power Spec. for Legacy cable

14. Power Consumption
 Power Spec. for Legacy Adapter

15. Mechanical
 Different type Cable Assembly
 Full-Featured Type-C Cable
 USB 2.0 Type-C Cable
 USB Type-C Captive Cable
 Legacy Cable Assemblies
 Legacy Adapter Assemblies

16. Mechanical
 Full-Featured Type-C Cable Assembly

17. Mechanical
 USB 2.0 Type-C Cable Assembly
- W/O SSTx/SSRx, SBUx wires

18. Mechanical
 USB Type-C Captive Cable Assembly
 A captive cable Captive Cable assembly is a cable assembly that is
terminated on one end with a USB Type-C plug and has a vendor-
specific connect means (hardwired or custom detachable) on the
opposite end. The cable assembly that is hardwired is not
detachable from the device.
 The assembly wiring for captive USB Type-C cables follow the
same wiring assignments as the standard cable assemblies (see
Table 3-10 and Table 3-11) with the exception that the hardwired
attachment on the device side substitutes for the USB Type-C Plug
#2 end.
 The CC wire in a captive cable shall be terminated and behave as
appropriate to the function of the product to which it is captive
(e.g. host or device).

19. Mechanical
 Legacy Cable Assemblies
 USB Type-C to USB 3.1 Standard-A Cable Assembly

20. Mechanical
 Legacy Cable Assemblies
 USB Type-C to USB 2.0 Standard-A cable assembly

21. Mechanical
 Legacy Cable Assemblies
 USB Type-C to USB 3.1 Standard-B cable assembly

22. Mechanical
 Legacy Cable Assemblies
 USB Type-C to USB 2.0 Standard-B cable assembly

23. Mechanical
 Legacy Cable Assemblies
 USB Type-C to USB 2.0 Mini-B cable assembly

24. Mechanical
 Legacy Cable Assemblies
 USB Type-C to USB 3.1 Micro-B cable assembly

25. Mechanical
 Legacy Cable Assemblies
 USB Type-C to USB 2.0 Micro-B cable assembly

26. Mechanical
 Legacy Adapter Assemblies
 USB Type-C to USB 3.1 Standard-A receptacle adapter
assembly

27. Mechanical
 Legacy Adapter Assemblies
 USB Type-C to USB 2.0 Micro-B receptacle adapter
assembly

28. Mechanical
 Five types Receptacle
 Vertical Mount Receptacle
 Dual-Row SMT Right Angle Receptacle
 Hybrid Right-Angle Receptacle
 Mid-Mount Dual-Row SMT Receptacle
 Mid-Mount Hybrid Receptacle
 Plug Interface Dimension

29. Mechanical
 Vertical Mount Receptacle

30. Mechanical
 Dual-Row SMT Right Angle Receptacle

31. Mechanical
 Hybrid Right-Angle Receptacle

32. Mechanical
 Mid-Mount Dual-Row SMT Receptacle

33. Mechanical
 Mid-Mount Hybrid Receptacle

34. Mechanical
 Plug Interface Dimensions

35. Mechanical
 Plug Interface Dimensions

36. Mechanical
 Plug Interface Dimensions

37. Mechanical
 EMC improvement (spring and pad)
 The shield of Cable should be physically connected to the
plug metal shell as close to 360° as possible, to control EMC.

38. Mechanical
 EMC improvement

39. Mechanical
 EMC improvement

40. Electrical Characteristics
 Electrical Characteristics
 Raw Cable
 Connector
 Cable Assemble

41. Electrical Characteristics
 Raw Cable
 The differential characteristic impedance for shielded
differential pairs is recommended to be 90 Ω ± 5 Ω.
 The single-ended characteristic impedance of coaxial
wires is recommended to be 45 Ω ± 3 Ω.
 The impedance should be evaluated using a 200 ps
(10%-90%) rise time; a faster rise time is not necessary
for raw cable since it will make cable test fixture
discontinuities more prominent.

42. Electrical Characteristics
 Raw Cable
 Intra-Pair Skew
 Differential Insertion Loss

43. Electrical Characteristics
 Mated Connector
 Differential Impedance
 Differential Insertion Loss
 Differential Return Loss
 Differential Near-End and Far-End Crosstalk between
SuperSpeed Pairs
 Differential Crosstalk between D+/D− and SuperSpeed
Pairs
 Differential-to-Common-Mode Conversion

44. Electrical Characteristics
 Cable Assemble
 USB Type-C to Type-C Passive Cable Assemblies
 USB Type-C to Legacy Cable Assemblies
 USB Type-C to USB Legacy Adapter Assemblies
 Shielding Effectiveness Requirements
 DC Electrical Requirements

45. Functional
 Signal Pins Definition
 Sideband Use
 Power and Ground
 Configuration Channel
 Power
 USB Hubs
 Chargers
 Electronically Marked Cables
 VCONN-Power Accessories

46. Functional
 Signal Pins

47. Functional
 Power and Ground
 IR Drop

48. Functional
 Power and Ground
 VBUS
 Max voltage is 5.5V for legacy devices due to higher
currents allowed.
 Support Rp method of connection detection, must
provide an impedance between VBUS and GND on
receptacle pin.

49. Functional
 Power and Ground
 VCONN
 For Electronically Marked Cable only

50. Functional
 Power and Ground
 VCONN

51. Functional
 Configuration Channel Purposes (Configuration process)
 Detect attach of USB ports, e.g. a DFP to a UFP
 Detect Attach and Detach
 Resolve cable orientation and twist connections to
establish USB data bus routing
 Detect Orientation
 Establish DFP and UFP roles between two attached ports
 Detect Source/Sink
 Discover and configure VBUS: USB Type-C Current modes or
USB Power Delivery
 Current Rating setting
 Configure VCONN
 Repurpose as VCONN
 Discover and configure optional Alternate and Accessory
modes
 PD Comm.(BMC)
 USB Device Enumeration
 Bus detecting, identifying and configuring USB device

52. Functional
 Configuration Channel Purposes
 Detect attach of USB ports, e.g. a DFP to a UFP

53. Functional
 Configuration Channel Purposes
 Detect attach of USB ports, e.g. a DFP to a UFP

54. Functional
 Configuration Channel Purposes
 Detect attach of USB ports, e.g. a DFP to a UFP

55. Functional
 Configuration Channel Purposes
 Detect attach of USB ports, e.g. a DFP to a UFP

56. Functional
 Configuration Channel Purposes
 Detect attach of USB ports, e.g. a DFP to a UFP

57. Functional
 Configuration Channel Purposes
 Establish DFP and UFP roles between two
attached ports

58. Functional
 Configuration Channel Purposes
 Establish DFP and UFP roles between two
attached ports

59. Functional
 Configuration Channel Purposes
 Establish DFP and UFP roles between two
attached ports

60. Functional
 Configuration Channel Purposes
 DFP and UFP roles

61. Functional
 Configuration Channel Purposes
 DFP and UFP roles
 Disabled State Requirement for UFP.
 The port shall not drive VBUS or VCONN, and shall
present a high-impedance to ground (above zOPEN)
on its CC pins.

62. Functional
 Configuration Channel Purposes
 Resolve cable orientation and twist connections to
establish USB data bus routing
 Un-flipped straight through – Position ① to Position ①

63. Functional
 Configuration Channel Purposes
 Resolve cable orientation and twist connections to
establish USB data bus routing
 Un-flipped twisted through – Position ① to Position ②

64. Functional
 Configuration Channel Purposes
 Resolve cable orientation and twist connections to
establish USB data bus routing
 Flipped straight through – Position ② to Position ②

65. Functional
 Configuration Channel Purposes
 Resolve cable orientation and twist connections to
establish USB data bus routing
 Flipped through – Position ② to Position ①

66. Functional
 Configuration Channel Purposes
 Direct Connect Device
 Un-flipped – Position ①

67. Functional
 Configuration Channel Purposes
 Direct Connect Device
 Flipped – Position ②

68. Functional
 Configuration Channel Purposes
 USB Type-C Port Interoperability

69. Functional
 Configuration Channel Purposes
 DRP – Capable of either DFP or UFP

70. Functional
 Configuration Channel Purposes
 DRP Timing
 Until a specific stable state is established, the DRP
alternates between exposing itself as a DFP and UFP.

71. Functional
 Configuration Channel Purposes
 Three USB Power Delivery Swap Command

72. Functional
 Configuration Channel Purposes
 Connection State Diagram: Source / Sink

73. Functional
 Configuration Channel Purposes
 Connection State Diagram: Sink with Accessory
Support

74. Functional
 Configuration Channel Purposes
 Connection State Diagram: DRP

75. Functional
 Configuration Channel Purposes
 Connection State Diagram: DRP with Accessory
and Try.SRC support

76. Functional
 Configuration Channel Purposes
 Each Connection States behavior

77. Functional
 Configuration Channel Purposes
 Connection States Summary

78. Functional
 Configuration Channel Purposes
 USB Port Interoperability Behavior
 USB Type-C Port to USB Type-C Port

79. Functional
 Configuration Channel Purposes
 USB Port Interoperability Behavior
 USB Type-C Port to USB Type-C Port

80. Functional
 Configuration Channel Purposes
 USB Port Interoperability Behavior
 USB Type-C Port to USB Type-C Port

81. Functional
 Configuration Channel Purposes
 USB Port Interoperability Behavior
 USB Type-C Port to USB Type-C Port

82. Functional
 Configuration Channel Purposes
 USB Port Interoperability Behavior
 USB Type-C Port to USB Type-C Port

83. Functional
 Configuration Channel Purposes
 USB Port Interoperability Behavior
 USB Type-C Port to USB Type-C Port

84. Functional
 Configuration Channel Purposes
 USB Port Interoperability Behavior
 USB Type-C Port to USB Type-C Port

85. Functional
 Configuration Channel Purposes
 USB Port Interoperability Behavior
 USB Type-C port to Legacy Port

86. Functional
 Configuration Channel Purposes
 USB Port Interoperability Behavior
 USB Type-C port to Legacy Port

87. Functional
 Configuration Channel Purposes
 USB Port Interoperability Behavior
 USB Type-C port to Legacy Port

88. Functional
 Configuration Channel Purposes
 USB Port Interoperability Behavior
 USB Type-C port to Legacy Port

89. Functional
 Power
 Precedence of power source usage
 VBUS Power Provided Over a USB Type-C Cable, VBUS shall
be tolerant up to 20 V.
 VCONN-powered accessories shall be able to operate over
a range of 2.7 V to 5.5 V on VCONN.
 Electronically marked cables shall draw no more than 7.5
mA from VCONN during USB suspend.

90. Functional
 Power
 Precedence of power source usage
 USB PD Bi-phase Mark Coded (BMC) on CC.
 Supporting USB PD BFSK(BinaryFrequencyShiftKeying)
for USB Type-C to legacy cables and adapters on VBUS.

91. Functional
 Chargers
 DFP as a Power Source
 Chargers with USB Type-C Receptacles
 Chargers with USB Type-C Captive Cables
 Non-USB Charging Methods
 Sinking DFP
 Charging UFP
 Charging a System with a Dead Battery

92. Functional
 Electronically Marked Cables
 Electronically Marked Cable with VCONN connected
through the cable

93. Functional
 Electronically Marked Cables
 Electronically Marked Cable with SOP’at both
ends

94. Functional
 Others
 SBU

95. Functional
 USB Type-C Port types list
 DFP (host-mode) or UFP (device-mode)
 Sourcing (Rp) or sinking (Rd) VBUS
 Data capable or not
 Sourcing VCONN

96. Functional
 USB Type-C Port types list (16 states)

97. Functional Extensions (Optional)
 Alternate Modes
 Alternate Mode Architecture
 Alternate Mode Pin Reassignment
 Alternate Mode Electrical Requirements
 Parameter Values
 USB/PCIe Dock Example
 Managed Active Cables
 Managed Active Cable Connection
 Respond to SOP’ and SOP”
 Parameter Values
 Cable Message Structure

98. Functional Extensions (Optional)
 Alternate Modes
 Alternate Mode Architecture
 The Structured VDMs(Vendor Defined Messages) consist
of a request followed by a response. The response is
either a successful completion of the request (ACK), an
indication that the device needs time before it can
service a request (BUSY), or a rejection of the request
(NAK). A host and device do not enter a mode when
either a NAK or BUSY is returned.

99. Functional Extensions (Optional)
 Alternate Modes
 Alternate Mode Architecture (Entry/Exist)
 SVID and Mode

100. Functional Extensions (Optional)
 Alternate Modes
 Alternate Mode Architecture
 The USB Power Delivery Structured VDMs are defined to
extend the functionality a device exposes.
DP &DP & MHL had implemented by VESAMHL had implemented by VESA
ThunderBoltThunderBolt 3 had implemented by3 had implemented by
IntelIntel

101. Functional Extensions (Optional)
 Alternate Modes
 Alternate Mode Pin Reassignment
 The pins that shall be reconfigured. (Yellow pins)

102. Functional Extensions (Optional)
 Alternate Modes
 Alternate Mode Electrical Requirements

103. Functional Extensions (Optional)
 Alternate Modes
 Parameter Values

104. Functional Extensions (Optional)
 Alternate Modes
 USB/PCIe Dock Example

105. Functional Extensions (Optional)
 Managed Active Cables
 Managed Active Cable Connection

106. Functional Extensions (Optional)
 Managed Active Cables
 Respond to SOP’ and SOP” – from PD

107. Functional Extensions (Optional)
 Managed Active Cables
 Modal Cable Management
 Discover SVIDs
 Discover Modes
 Enter Mode
 Exit Mode

108. Functional Extensions (Optional)
 Managed Active Cables
 USB PD E-markers I.C had Certification List till
now.

109. Audio Adapter Accessory Mode
 Feature
 The four analog audio signals are the same as
those used by a traditional 3.5 mm headset jack.
 The audio adapter architecture allows for an
audio peripheral to provide up to 500 mA back to
the system for charging.

110. Audio Adapter Accessory Mode
 USB Type-C Analog Audio Pin Assignments

111. Audio Adapter Accessory Mode
 Examples

112. Audio Adapter Accessory Mode
 Examples

113. Reference
 USB Type-C Spec. R1.1
 USB PD Spec. R2.0 V1.1
 Intel IDF15 HSTS003 file

114. Q & A