The header has a key slot on the pin 1-9 side if enclosed.The 10-pin IDC male graphic shown has the keying on the wrong side).
The sheild is left unconnected if a single port cable is plugged in to port 1. Dual Port hear connectors, share port 10 for both port sheilds. Some Pinouts will show port 10 as NC, which makes both sheilds NC. It will work in eather port of the header, but port 2 is recomended due to the presence of the Sheild Drain. It is NOT pin compatable with the very rare (10 pin 2x5, missing pins 10 and 2). Copyright 2000-2019 by pinouts.ru team, except user uploaded images. No portion of this webpage may be reproduced in any form without visible link to pinoutguide.com. Since theres only one CC wire inside the USB Type-C cable, only one current path is formed. This introductory article will look at some of the most important features of the USB-C standard. USB Type-C is a specification for a USB connector system that is gaining popularity across smartphones and mobile devices and is capable of both power delivery and data transmission. Before diving into the pinout and explaining what each is capable of, well quickly take a high-level view of what USB-C is and what its best at. These features can make the USB-C a truly universal connectivity standard for the modern devices. Though USB-C is more commonly used, USB Type-C is the official name of the standard as listed on USB.org. The interface is designed in a way that the plug can be flipped relative to the receptacle. The USB Type-C ReceptaclePlug Pins The USB Type-C connector has 24 pins. ![]() Image courtesy of Microchip. USB 2.0 Differential Pairs The D and D- pins are the differential pairs used for the USB 2.0 connectivity. There are two D pins and two D- pins in the receptacle. The redundancy is included only to provide a flippable connector. Power and Ground Pins The VBUS and GND pins are power and the return paths for the signals. The default VBUS voltage is 5 V but the standard allows the devices to negotiate and choose a VBUS voltage other than the default value. Hence, the USB Type-C could deliver a maximum power of 100 W. Figure 3 shows an example from RICHTEK where a buck-boost converter is used to generate the appropriate voltage requested by the notebook computer. You can charge both of your smartphone and notebook using the same cable. The RX and TX Pins There are two sets of RX differential pairs and two sets of TX differential pairs. These functionalities may utilize even all of the available RXTX differential pairs. The CC1 and CC2 Pins These pins are the Channel Configuration pins. They perform a number of functions such as cable attachment and removal detection, receptacleplug orientation detection, and current advertisement. These pins could be also used for the communications required by the Power Delivery and Alternate Mode. In this figure, DFP stands for Downstream Facing Port which is the port acting as either the host in data transmission or the source for power. UFP denotes Upstream Facing Port which is the device connected to the host or the power consumer. If no cable is attached, the source sees a logic high at CC1 and CC2 pins. Connecting the USB Type-C cable creates a current path from 5-V supply to ground.
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