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Topic Motivation Overview Mechanical Functional Functional Extensions Audio Adapter Accessory Mode
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.
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)
Overview USB Type-C Architecture
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
Mechanical Cable Plug Form Factors
Mechanical Connector Interface Pin-out
Overview Connector Interface Pin definition
Mechanical Cable Construction
Power Consumption Summary of Power Spec.
Power Consumption Power Spec. for Type-C cable
Power Consumption Power Spec. for Legacy cable
Power Consumption Power Spec. for Legacy Adapter
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
Mechanical Full-Featured Type-C Cable Assembly
Mechanical USB 2.0 Type-C Cable Assembly
- W/O SSTx/SSRx, SBUx wires
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).
Mechanical Legacy Cable Assemblies USB Type-C to USB 3.1 Standard-A Cable Assembly
Mechanical Legacy Cable Assemblies USB Type-C to USB 2.0 Standard-A cable assembly
Mechanical Legacy Cable Assemblies USB Type-C to USB 3.1 Standard-B cable assembly
Mechanical Legacy Cable Assemblies USB Type-C to USB 2.0 Standard-B cable assembly
Mechanical Legacy Cable Assemblies USB Type-C to USB 2.0 Mini-B cable assembly
Mechanical Legacy Cable Assemblies USB Type-C to USB 3.1 Micro-B cable assembly
Mechanical Legacy Cable Assemblies USB Type-C to USB 2.0 Micro-B cable assembly
Mechanical Legacy Adapter Assemblies USB Type-C to USB 3.1 Standard-A receptacle adapter
assembly
Mechanical Legacy Adapter Assemblies USB Type-C to USB 2.0 Micro-B receptacle adapter
assembly
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
Mechanical Vertical Mount Receptacle
Mechanical Dual-Row SMT Right Angle Receptacle
Mechanical Hybrid Right-Angle Receptacle
Mechanical Mid-Mount Dual-Row SMT Receptacle
Mechanical Mid-Mount Hybrid Receptacle
Mechanical Plug Interface Dimensions
Mechanical Plug Interface Dimensions
Mechanical Plug Interface Dimensions
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.
Mechanical EMC improvement
Mechanical EMC improvement
Electrical Characteristics Electrical Characteristics Raw Cable Connector Cable Assemble
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.
Electrical Characteristics Raw Cable Intra-Pair Skew Differential Insertion Loss
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
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
Functional Signal Pins Definition Sideband Use Power and Ground Configuration Channel Power USB Hubs Chargers Electronically Marked Cables VCONN-Power Accessories
Functional Signal Pins
Functional Power and Ground IR Drop
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.
Functional Power and Ground VCONN
For Electronically Marked Cable only
Functional Power and Ground VCONN
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
Functional Configuration Channel Purposes Detect attach of USB ports, e.g. a DFP to a UFP
Functional Configuration Channel Purposes Detect attach of USB ports, e.g. a DFP to a UFP
Functional Configuration Channel Purposes Detect attach of USB ports, e.g. a DFP to a UFP
Functional Configuration Channel Purposes Detect attach of USB ports, e.g. a DFP to a UFP
Functional Configuration Channel Purposes Detect attach of USB ports, e.g. a DFP to a UFP
Functional Configuration Channel Purposes Establish DFP and UFP roles between two
attached ports
Functional Configuration Channel Purposes Establish DFP and UFP roles between two
attached ports
Functional Configuration Channel Purposes Establish DFP and UFP roles between two
attached ports
Functional Configuration Channel Purposes DFP and UFP roles
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.
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
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
Functional Configuration Channel Purposes
Resolve cable orientation and twist connections to establish USB data bus routing
Flipped straight through – Position ② to Position ②
Functional Configuration Channel Purposes
Resolve cable orientation and twist connections to establish USB data bus routing
Flipped through – Position ② to Position ①
Functional Configuration Channel Purposes
Direct Connect Device Un-flipped – Position ①
Functional Configuration Channel Purposes
Direct Connect Device Flipped – Position ②
Functional Configuration Channel Purposes USB Type-C Port Interoperability
Functional Configuration Channel Purposes DRP – Capable of either DFP or UFP
Functional Configuration Channel Purposes DRP Timing Until a specific stable state is established, the DRP
alternates between exposing itself as a DFP and UFP.
Functional Configuration Channel Purposes Three USB Power Delivery Swap Command
Functional Configuration Channel Purposes Connection State Diagram: Source / Sink
Functional Configuration Channel Purposes Connection State Diagram: Sink with Accessory
Support
Functional Configuration Channel Purposes Connection State Diagram: DRP
Functional Configuration Channel Purposes Connection State Diagram: DRP with Accessory
and Try.SRC support
Functional Configuration Channel Purposes Each Connection States behavior
Functional Configuration Channel Purposes Connection States Summary
Functional Configuration Channel Purposes USB Port Interoperability Behavior USB Type-C Port to USB Type-C Port
Functional Configuration Channel Purposes USB Port Interoperability Behavior USB Type-C Port to USB Type-C Port
Functional Configuration Channel Purposes USB Port Interoperability Behavior USB Type-C Port to USB Type-C Port
Functional Configuration Channel Purposes USB Port Interoperability Behavior USB Type-C Port to USB Type-C Port
Functional Configuration Channel Purposes USB Port Interoperability Behavior USB Type-C Port to USB Type-C Port
Functional Configuration Channel Purposes USB Port Interoperability Behavior USB Type-C Port to USB Type-C Port
Functional Configuration Channel Purposes USB Port Interoperability Behavior USB Type-C Port to USB Type-C Port
Functional Configuration Channel Purposes USB Port Interoperability Behavior USB Type-C port to Legacy Port
Functional Configuration Channel Purposes USB Port Interoperability Behavior USB Type-C port to Legacy Port
Functional Configuration Channel Purposes USB Port Interoperability Behavior USB Type-C port to Legacy Port
Functional Configuration Channel Purposes USB Port Interoperability Behavior USB Type-C port to Legacy Port
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.
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.
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
Functional Electronically Marked Cables Electronically Marked Cable with VCONN connected
through the cable
Functional Electronically Marked Cables Electronically Marked Cable with SOP’at both
ends
Functional Others SBU
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
Functional USB Type-C Port types list (16 states)
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
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.
Functional Extensions (Optional) Alternate Modes Alternate Mode Architecture (Entry/Exist) SVID and Mode
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 VESAThunderBoltThunderBolt 3 had implemented by 3 had implemented by IntelIntel
Functional Extensions (Optional) Alternate Modes Alternate Mode Pin Reassignment The pins that shall be reconfigured. (Yellow pins)
Functional Extensions (Optional) Alternate Modes Alternate Mode Electrical Requirements
Functional Extensions (Optional) Alternate Modes Parameter Values
Functional Extensions (Optional) Alternate Modes USB/PCIe Dock Example
Functional Extensions (Optional) Managed Active Cables Managed Active Cable Connection
Functional Extensions (Optional) Managed Active Cables Respond to SOP’ and SOP” – from PD
Functional Extensions (Optional) Managed Active Cables Modal Cable Management Discover SVIDs Discover Modes Enter Mode Exit Mode
Functional Extensions (Optional) Managed Active Cables USB PD E-markers I.C had Certification List till
now.
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.
Audio Adapter Accessory Mode USB Type-C Analog Audio Pin Assignments
Audio Adapter Accessory Mode Examples
Audio Adapter Accessory Mode Examples
Reference USB Type-C Spec. R1.1 USB PD Spec. R2.0 V1.1 Intel IDF15 HSTS003 file
Q & A