USB pinout, wiring and how it works! USB A, B 2.0 and 3.0 Cable Pinout. The USB cable provides four pathways- two power conductors and two twisted signal conductors. The USB device that uses full speed bandwidth devices must have a twisted pair D+ and D- conductors. The data is transferred through the D+ and D- connectors while Vbus and Gnd connectors provide power to the USB device. USB sound card - Electronic Circuits and Diagrams The circuit gets control data and audio data from the USB through the D+ and D- pins of the PCM2702 all the data transferring is carried out at full speed. The decoded audio signals will be available at the VOUTL and VOUTR pins of the IC. The 12MHz crystal is connected between the XT0 and XT1 pins of TIDA-00565 USB Type-C Audio Adapter Accessory Mode The USB Type-C™ audio adapter accessory mode reference design provides the solution for transmitting analog audio through the USB Type-C interface. This reference design demonstrates how analog audio can be transmitted to system peripherals using the USB Type-C standard audio adapter accessory mode, while still maintaining the ability to transfer USB data over the same USB Type-C Open-source USB interface: Audio Widget - diyAudio Announcement: Audio Widget project The Audio Widget project is open-source code and schematics for USB based digital audio. It has functional firmware and software. And it sounds good! Cool? You bet! Here you can get started with USB audio without worrying too much about the USB part of things. Or you can contribute to a great open-source USB - Wikipedia Overview. USB was designed to standardize the connection of peripherals to personal computers, both to communicate with and to supply electric power. It has largely replaced interfaces such as serial ports and parallel ports, and has become commonplace on a wide range of devicesples of peripherals that are connected via USB include computer keyboards and mice, video cameras, printers Repair Usb Audio interface Focustrite 2i4 - Page 1 Repair Usb Audio interface Focustrite 2i4 - Page 1. EEVblog Electronics Community Forum. A Free & Open Hi, you're right, no schematic found on the internet. to be precise I have +0 on the positive rail and -0 on the negative rail. but when I shout down the board the positive and the negative rails seems to be shorted to ground.