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The Type-C plug connects to both hosts and devices, replacing various Type-B and Type-A connectors and cables with a standard meant to be future-proof.<ref>{{cite web|last=Ngo |first=Dong |url=http://www.cnet.com/news/usb-type-c-one-cable-to-connect-them-all/ |title=USB Type-C: One cable to connect them all |publisher=CNET |accessdate=2015-06-18}}</ref><ref>{{cite web|url=http://www.anandtech.com/show/8377/usb-typec-connector-specifications-finalized |title=USB Type-C Connector Specifications Finalized |website=AnandTech.com |accessdate=2015-06-18}}</ref> The 24-pin double-sided connector provides four power/ground pairs, two differential pairs for USB&nbsp;2.0 data bus (though only one pair is implemented in a Type-C cable), four pairs for high-speed data bus, two "sideband use" pins, and two configuration pins for cable orientation detection, dedicated [[biphase mark code]] (BMC) configuration data channel, and V<sub>CONN</sub> +5&nbsp;V power for active cables.<ref name="IDF14-TypeC">{{cite web|url=https://intel.activeevents.com/sf14/connect/sessionDetail.ww?SESSION_ID=1254 |title=Technical Introduction of the New USB Type-C Connector |website=Intel.ActiveEvents.com |accessdate=2015-06-18}}</ref><ref name="TypeC-DP1.3">{{cite web|url=http://www.anandtech.com/show/8558/displayport-alternate-mode-for-usb-typec-announced |title=DisplayPort Alternate Mode for USB Type-C Announced - Video, Power, & Data All Over Type-C |website=AnandTech.com |accessdate=2015-06-18}}</ref><ref name="MCP-Into">{{cite web|url=http://ww1.microchip.com/downloads/en/AppNotes/00001953A.pdf |format=PDF |title=Introduction to USB Type-C |publisher=Microchip.com |accessdate=2015-06-18}}</ref> Type-A and Type-B adaptors/cables will be required for older devices in order to plug into Type-C hosts; adaptors/cables with a Type-C receptacle are not allowed.
The Type-C plug connects to both hosts and devices, replacing various Type-B and Type-A connectors and cables with a standard meant to be future-proof.<ref>{{cite web|last=Ngo |first=Dong |url=http://www.cnet.com/news/usb-type-c-one-cable-to-connect-them-all/ |title=USB Type-C: One cable to connect them all |publisher=CNET |accessdate=2015-06-18}}</ref><ref>{{cite web|url=http://www.anandtech.com/show/8377/usb-typec-connector-specifications-finalized |title=USB Type-C Connector Specifications Finalized |website=AnandTech.com |accessdate=2015-06-18}}</ref> The 24-pin double-sided connector provides four power/ground pairs, two differential pairs for USB&nbsp;2.0 data bus (though only one pair is implemented in a Type-C cable), four pairs for high-speed data bus, two "sideband use" pins, and two configuration pins for cable orientation detection, dedicated [[biphase mark code]] (BMC) configuration data channel, and V<sub>CONN</sub> +5&nbsp;V power for active cables.<ref name="IDF14-TypeC">{{cite web|url=https://intel.activeevents.com/sf14/connect/sessionDetail.ww?SESSION_ID=1254 |title=Technical Introduction of the New USB Type-C Connector |website=Intel.ActiveEvents.com |accessdate=2015-06-18}}</ref><ref name="TypeC-DP1.3">{{cite web|url=http://www.anandtech.com/show/8558/displayport-alternate-mode-for-usb-typec-announced |title=DisplayPort Alternate Mode for USB Type-C Announced - Video, Power, & Data All Over Type-C |website=AnandTech.com |accessdate=2015-06-18}}</ref><ref name="MCP-Into">{{cite web|url=http://ww1.microchip.com/downloads/en/AppNotes/00001953A.pdf |format=PDF |title=Introduction to USB Type-C |publisher=Microchip.com |accessdate=2015-06-18}}</ref> Type-A and Type-B adaptors/cables will be required for older devices in order to plug into Type-C hosts; adaptors/cables with a Type-C receptacle are not allowed.


Full-featured USB Type-C cables are active, electronically marked cables that contain a chip with an ID function based on the configuration data channel and vendor-defined messages (VDMs) from the [[#USB Power Delivery|USB Power Delivery 2.0]] specification. USB Type-C devices also support power currents of 1.5&nbsp;A and 3.0&nbsp;A over the 5&nbsp;V power bus in addition to baseline 900&nbsp;mA; devices can either negotiate increased USB current through the configuration line, or they can support the full Power Delivery specification using both BMC-coded configuration line and legacy BFSK-coded V<sub>BUS</sub> line.
Full-featured USB Type-C cables are active, electronically marked cables that contain a chip with an ID function based on the configuration data channel and vendor-defined messages (VDMs) from the [[USB#PD|USB Power Delivery 2.0]] specification. USB Type-C devices also support power currents of 1.5&nbsp;A and 3.0&nbsp;A over the 5&nbsp;V power bus in addition to baseline 900&nbsp;mA; devices can either negotiate increased USB current through the configuration line, or they can support the full Power Delivery specification using both BMC-coded configuration line and legacy BFSK-coded V<sub>BUS</sub> line.


===Alternate mode===
===Alternate mode===

Revision as of 19:18, 1 September 2015

File:USB-Type-C.svg
The USB Type-C plug

USB Type-C is a specification for a reversible-plug connector for USB devices and USB cabling. It was published by the USB Implementers Forum.

Developed at roughly the same time as the USB 3.1 specification, but distinct from it, the USB Type-C Specification 1.0 defines a new small reversible-plug connector for USB devices.[1]

Details

The Type-C plug connects to both hosts and devices, replacing various Type-B and Type-A connectors and cables with a standard meant to be future-proof.[2][3] The 24-pin double-sided connector provides four power/ground pairs, two differential pairs for USB 2.0 data bus (though only one pair is implemented in a Type-C cable), four pairs for high-speed data bus, two "sideband use" pins, and two configuration pins for cable orientation detection, dedicated biphase mark code (BMC) configuration data channel, and VCONN +5 V power for active cables.[4][5][6] Type-A and Type-B adaptors/cables will be required for older devices in order to plug into Type-C hosts; adaptors/cables with a Type-C receptacle are not allowed.

Full-featured USB Type-C cables are active, electronically marked cables that contain a chip with an ID function based on the configuration data channel and vendor-defined messages (VDMs) from the USB Power Delivery 2.0 specification. USB Type-C devices also support power currents of 1.5 A and 3.0 A over the 5 V power bus in addition to baseline 900 mA; devices can either negotiate increased USB current through the configuration line, or they can support the full Power Delivery specification using both BMC-coded configuration line and legacy BFSK-coded VBUS line.

Alternate mode

Alternate Mode dedicates some of the physical wires in the USB Type-C cable for direct device-to-host transmission of alternate data protocols. The four high-speed lanes, two sideband pins, and - for dock, detachable device and permanent cable applications only - two USB 2.0 pins and one configuration pin can be used for Alternate Mode transmission. The modes are configured using VDMs through the configuration channel.

Relation to other specifications

USB-IF specifications

As outlined by the USB Type-C Cable and Connector Language Usage Guidelines,[7] if a product supports USB Type-C, it does not necessarily support:

The Nokia N1, one of the first hardware products to support USB Type-C, will only support USB 2.0.

Alternate Mode partner specifications

The USB IF is working with its Alternate Mode partners to make sure that ports are properly labeled.[8]

  1. DisplayPort Alternate Mode on USB Type-C Connector Standard - published in September 2014, supporting DisplayPort 1.3[9]
  2. MHL Alternate Mode / MHL Alt mode announced November 2014[10] supporting MHL 3.0 [5][11]
  3. Thunderbolt Alternate Mode[12] supporting Thunderbolt 3[13][14][15]

Other serial protocols like PCI Express and Base-T Ethernet are possible.[citation needed]

Connector pinouts and cable wiring

Connector pinouts

USB Type-C connector pinouts
Pin Name Description Pin Name Description
A1 GND Ground return B12 GND Ground return
A2 SSTXp1 SuperSpeed differential pair #1, TX, positive B11 SSRXp1 SuperSpeed differential pair #1, RX, positive
A3 SSTXn1 SuperSpeed differential pair #1, TX, negative B10 SSRXn1 SuperSpeed differential pair #1, RX, negative
A4 VBUS Bus power B9 VBUS Bus power
A5 CC1 Configuration channel B8 SBU2 Sideband use (SBU)
A6 Dp1 USB 2.0 differential pair, position 1, positive B7 Dn2 USB 2.0 differential pair, position 2, negative
A7 Dn1 USB 2.0 differential pair, position 1, negative B6 Dp2 USB 2.0 differential pair, position 2, positive
A8 SBU1 Sideband use (SBU) B5 CC2 Configuration channel
A9 VBUS Bus power B4 VBUS Bus power
A10 SSRXn2 SuperSpeed differential pair #2, RX, negative B3 SSTXn2 SuperSpeed differential pair #2, TX, negative
A11 SSRXp2 SuperSpeed differential pair #2, RX, positive B2 SSTXp2 SuperSpeed differential pair #2, TX, positive
A12 GND Ground return B1 GND Ground return
USB 2.0 differential pair connects only in one position; position 2 is not physically present in the plug

Cable wiring

Full-featured USB 3.1 Type-C cable wiring
Type-C plug 1 Type-C cable Type-C plug 2
Pin Name Wire color Name Description Pin Name
Shell Shield Braid Shield Cable external braid Shell Shield
A1, B1, A12, B12 GND Tin-plated GND_PWRrt1
GND_PWRrt2 		Ground for power return A1, B1, A12, B12 GND
A4, B4, A9, B9 VBUS Red PWR_VBUS1
PWR_VBUS2 		VBUS power A4, B4, A9, B9 VBUS
B5 VCONN Yellow
PWR_VCONN VCONN power B5 VCONN
A5 CC Blue CC Configuration channel A5 CC
A6 Dp1 White UTP_Dp Unshielded twisted pair, positive A6 Dp1
A7 Dn1 Green UTP_Dn Unshielded twisted pair, negative A7 Dn1
A8 SBU1 Red SBU_A Sideband use A B8 SBU2
B8 SBU2 Black SBU_B Sideband use B A8 SBU1
A2 SSTXp1 Yellow * SDPp1 Shielded differential pair #1, positive B11 SSRXp1
A3 SSTXn1 Brown * SDPn1 Shielded differential pair #1, negative B10 SSRXn1
B11 SSRXp1 Green * SDPp2 Shielded differential pair #2, positive A2 SSTXp1
B10 SSRXn1 Orange * SDPn2 Shielded differential pair #2, negative A3 SSTXn1
B2 SSTXp2 White * SDPp3 Shielded differential pair #3, positive A11 SSRXp2
B3 SSTXn2 Black * SDPn3 Shielded differential pair #3, negative A10 SSRXn2
A11 SSRXp2 Red * SDPp4 Shielded differential pair #4, positive B2 SSTXp2
A10 SSRXn2 Blue * SDPn4 Shielded differential pair #4, negative B3 SSTXn2
* Wire colors for differential pairs are not mandated

Hardware and OS support

OS support

Windows 10 supports USB 3.1 and USB Type-C.[16] OS X is supporting USB 3.1 and USB Type-C.[17] Android Marshmallow will support USB Type-C.

Hardware support

Netbooks, tablets, smartphones

Among the first devices to accommodate a USB Type-C cable are the Nokia N1 tablet,[18] Apple's 2015 MacBook (which has only a single first-generation USB 3.1 port),[1] and Google's second Chromebook Pixel.The HP Pavilion x2 10 detachable a 2 in 1 Hybrid also supports USB Type-C[1] . The first smartphone that accommodates a USB Type-C cable is from a Chinese company LeTV.[19] Recently, OnePlus 2, successor of OnePlus One mobile, announced USB Type-C in its specifications.[20][21]

Storage

References

  1. ^ a b Hruska, Joel (2015-03-13). "USB-C vs. USB 3.1: What's the difference?". ExtremeTech. Retrieved 2015-04-09.
  2. ^ Ngo, Dong. "USB Type-C: One cable to connect them all". CNET. Retrieved 2015-06-18.
  3. ^ "USB Type-C Connector Specifications Finalized". AnandTech.com. Retrieved 2015-06-18.
  4. ^ "Technical Introduction of the New USB Type-C Connector". Intel.ActiveEvents.com. Retrieved 2015-06-18.
  5. ^ a b "DisplayPort Alternate Mode for USB Type-C Announced - Video, Power, & Data All Over Type-C". AnandTech.com. Retrieved 2015-06-18.
  6. ^ "Introduction to USB Type-C" (PDF). Microchip.com. Retrieved 2015-06-18.
  7. ^ "USB Type-C Cable and Connector : Language Usage Guidelines from USB-IF" (PDF). Usb.org. Retrieved 2015-06-18.
  8. ^ Cunningham, Andrew (2015-01-09). "USB 3.1 and Type-C: The only stuff at CES that everyone is going to use | Ars Technica UK". ArsTechnica.co.uk. Retrieved 2015-06-18.
  9. ^ "VESA® Brings DisplayPort™ to New USB Type-C Connector". DisplayPort. 2014-09-22. Retrieved 2015-06-18.
  10. ^ "MHL® – Expand Your World". MHLTech.org. Retrieved 2015-06-18.
  11. ^ "MHL® – Expand Your World". MHLTech.org. 2014-11-17. Retrieved 2015-06-18.
  12. ^ "Thunderbolt 3 – The USB-C That Does It All | Thunderbolt Technology Community". Thunderbolttechnology.net. Retrieved 2015-06-18.
  13. ^ One port to rule them all: Thunderbolt 3 and USB Type-C join forces, retrieved 2015-06-02
  14. ^ Thunderbolt 3 is twice as fast and uses reversible USB-C, retrieved 2015-06-02
  15. ^ Thunderbolt 3 embraces USB Type-C connector, doubles bandwidth to 40Gbps, retrieved 2015-06-02
  16. ^ "Microsoft confirms Windows 10 will support USB 3.1 Type-C and Dual Role". Windows Central. 2015-02-27. Retrieved 2015-06-18.
  17. ^ "Using the USB-C port and adapters on your MacBook (Retina, 12-inch, Early 2015) - Apple Support". Support.Apple.com. 2015-05-28. Retrieved 2015-06-18.
  18. ^ The Nokia N1 will be among the first devices with a reversible USB connector
  19. ^ Boxall, Andy (2015-04-14). "Letv Le Superphone: Features, News, Release, Specs". Digitaltrends.com. Retrieved 2015-06-18.
  20. ^ Pei, Carl (2015-06-23). "OnePlus 2 - The First Flagship with USB Type C". oneplus.net. Retrieved 2015-06-23.
  21. ^ OnePlus 2 Type-C USB Cable Pics - News Exprezz, June 25 2015.
  22. ^ Ian Paul. "LaCie announces USB Type-C mobile drives to match Apple's 12-inch MacBook". Macworld. Retrieved 2015-06-18.
  23. ^ "Porsche Design". LaCie. Retrieved 2015-06-18.
  24. ^ "Computex 2015: 1.92TB Portable USB 3.1 SSD storage from Sandisk". Guru3d.com. Retrieved 2015-06-18.
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