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An older device can connect to a modern (USB-C) host by using a legacy cable, with a Standard-B, Mini-B, or Micro-B plug on the device end and a USB-C plug on the other. Similarly, a modern device can connect to a legacy host by using a legacy cable with a USB-C plug on the device end and a Standard-A plug on the host end. Legacy adapters with USB-C receptacles are "not defined or allowed" by the specification because they can create "many invalid and potentially unsafe" cable combinations (being any cable assembly with two A ends or two B ends). However, exactly two types of adapter with USB-C plugs are defined: one with a Standard-A receptacle (for connecting a legacy device (such as a flash drive—not a cable) to a modern host, and supporting up to USB 3.1), and one with a Micro-B receptacle (for connecting a modern device to a legacy host, and supporting up to USB 2.0). [14] Non-USB modes [ edit ] Audio adapter accessory mode [ edit ]
VESA Releases Updated DisplayPort Alt Mode Spec to Bring DisplayPort 2.0 Performance to USB4 and New USB Type-C Devices". VESA - Interface Standards for The Display Industry. 2020-04-29. Archived from the original on 2021-11-23 . Retrieved 2020-10-01. Gallium Nitride (GaN) technology has made chargers a fraction of the size of silicon-based models only a couple of years old, and once considered small themselves. V BUS and GND provide 5V up to 900mA, in accordance with the USB3.1 specification. A specific USB-C mode may also be entered, where 5V at nominal either 1.5A or 3A is provided. [59] A third alternative is to establish a USB Power Delivery (USB-PD) contract. IEC 62680-1-3:2017 | IEC Webstore | energy, multimedia, cable, USB, LVDC". webstore.iec.ch. Archived from the original on 2018-11-04 . Retrieved 2018-11-03. Universal Serial Bus Type-C Cable and Connector Specification, September 21, 2019" (PDF). Archived (PDF) from the original on 2019-09-14 . Retrieved 2019-09-21.
How Do They Talk?
TECHNOLOGY BRIEF Thunderbolt 3" (PDF). 2018-09-21. Archived (PDF) from the original on 2018-12-24 . Retrieved 2018-09-20. All USB-C cables must be able to carry a minimum of 3A current (at 5 V, for 15 W) but some can carry 5A current (at 20 V, for 100 W). [10] USB-C to USB-C cables supporting 5 A current must contain e-marker chips (also marketed as E-Mark chips) programmed to identify the cable and its current capabilities. USB charging ports should be clearly marked with power capability. [11] MHL Releases Alternate Mode for New USB Type-C Connector". MHLTech.org. MHLTech.org. 2014-11-17. Archived from the original on 2014-11-29 . Retrieved 2015-06-18. Hruska, Joel (2015-03-13). "USB-C vs. USB 3.1: What's the difference?". ExtremeTech. Archived from the original on 2015-04-11 . Retrieved 2015-04-09.
Your next step (which should be your first step) is to figure out if "your phone" uses late edition of PowerDelivery and can negotiate anything above 5 V level. VESA RELEASES UPDATED DISPLAYPORT ALT MODE SPEC TO BRING DISPLAYPORT 2.0 PERFORMANCE TO USB4 AND NEW USB TYPE-C DEVICES". Vesa. 2020-04-29. Archived from the original on 2021-11-23 . Retrieved 2021-08-09. In regard to power, the devices are supposed to negotiate a Power Delivery contract before an Alternate Mode is entered. [60] GND What if I want to take my laptop somewhere? Now I have to bring a separate phone and laptop charger, or a 2 in 1 specific to that combination of phone and laptop, that my friends can’t use if they have a tablet that needs a different one of the options? The plug has only one USB 2.0 high-speed differential pair, and one of the CC pins (CC2) is replaced by V CONN, to power optional electronics in the cable, and the other is used to actually carry the Configuration Channel (CC) signals. These signals are used to determine the orientation of the cable, as well as to carry USB Power Delivery communications.It depends entirely on what the PD charger can put out, how intelligent the adaptor is to be able to select the right output from the PD charger and how tolerant the laptop is of "random" adaptors. Some laptops expect just a dumb power supply, others expect some simple communication or power select method. MHL Alt Mode: Optimizing Consumer Video Transmission" (PDF). usb.org. MHL, LLC. 2015-11-18. Archived from the original (PDF) on 2016-09-14. USB-C will use the Power Delivery specification, a first connexion is done at 5V, then "negotiate" whether it can use a higher profile to charge. There are 5 profiles available : In single-lane mode, only the differential pairs closest to the CC pin are used for data transmission. For dual-lane data transfers, all four differential pairs are in use.
USB-C is widely adopted. Android smartphones, Apple MacBooks, Nintendo Switch consoles, e-readers and wireless earphones are a few examples of products that universally use USB-C connections. While the Apple iPhone doesn’t currently use a USB-C connection – opting for its patented Lightning cable – the cable provided with the iPhone does connect to USB-C ports. Given the upcoming European regulations, even Apple iPhones should soon be moving over to USB-C. Fancy upgrading to a wireless phone charger? We’ve ranked our favourites. It has four USB outputs in all, making it an ideal device if you have multiple devices to charge. However, not if you have multiple laptops to charge… However, do note that one of the USB-C ports will charge at the full 90W and the other at a more sedate 18W (more than fine for a phone, but unlikely to be enough to power a laptop).There are two modes of audio output from devices: digital and analog. There are primarily two types of USB-C audio adapters: active, e.g. those with digital-to-analog converters (DACs), and passive, without electronics. [85] [86] IEC 62680-1-3:2016 | IEC Webstore | energy, multimedia, cable, USB, LVDC". webstore.iec.ch. Archived from the original on 2018-11-04 . Retrieved 2018-11-03. HDMI Alt Mode for USB Type-C Connector". hdmi.org. Archived from the original on 2016-09-19 . Retrieved 2016-09-10. 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. Archived from the original on 2015-06-18 . Retrieved 2015-06-18.
Riley, Duncan (2022-10-04). "European Parliament votes to comepl USB-C charging on all portable devices". SiliconANGLE . Retrieved 2022-10-06.
Why USB-C?
USB power delivery has added 28V, 36V and 48V to support up to 240W of power for laptops, monitors, hard disks and other peripherals. USB-C is being positioned as the solution for mobile. [58] GND
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