USB Type C Introduction & Implement

Fei Zhou PE China, Microsoft

C

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• Very flexible power options

• USB PD is not mandatory

• USB PD ( Structured VDM) required to support Alternate Mode

• VBUS should be off until device detected

Po

wer O

ptio

ns p

riority

Windows®10

• Initial release of USB-C* support

• Basic error messages for Billboard, slow charging, incompatible dual

role scenarios

Future

Investments

• Address interoperability issues discovered at IOP events

• Enhance error messaging to reduce customer confusion & OEM

support calls

• Support for new USB-C* scenarios

Standard SW-HW/FW Interface (UCSI) Custom SW-HW/FW Interface

UCM Class Extension + Policy Manager

In-box UCMCx Client Driver (UCSI)

Custom UCMCx Client Driver

UCM Client Interface

USB-C Hardware/Firmware

USB* Connector Manager (UCM)

USB Host Stack

User Interface

USB Host Controller

USB Function Stack

USB Device Controller

Microsoft* component

OEM/IHV component

Interface layer

Hardware

• If a dual-role Windows® 10 Mobile device (e.g., phone) is connected to a dual-

role Windows 10 Desktop system, Windows will ensure that the Mobile device

becomes the UFP

• If the desktop system does not have functionality in the role it resolved in, it will

attempt a Data Role Swap

• If the Data Role Swap succeeded, but the power roles didn’t swap, the system will

attempt a Power Role Swap

• If Windows 10 Mobile device resolves as DFP and it is connected to a Windows

10 system that doesn’t support USB Connector Manager, we will also attempt

Data Role/Power Role swap

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