Think of USB OTG as a means to use the accessories meant for bigger devices, such as your laptop, PC, gaming console, TV, etc., on your smartphone or tablet. In addition to legacy devices, OTG also allows you to use a vast array of other devices that weren’t originally intended to ...
USB OTG的工作原理(英文).pdf,Maxim Design Support Technical Documents Tutorials Interface Circuits APP 1822 Keywords: USB OTG, OTG, USB on the go, dual role device, host negotiation protocol, session request protocol, host, peripheral, transceiver TUTOR
USB On-the-Go (OTG) allows two USB devices to talk to each other without requiring the services of a personal computer. Although OTG appears to add \"peer to peer\" connections to USB, it does not. Instead, USB OTG retains the standard USB host/peripheral model, where a single host t...
[ 3.736990] usbserial: USB Serial support registered for qc_csvt 6 [ 3.742957] usbcore: registered new interface driver usb_ehset_test 7 [ 3.751881] msm_otg 78d9000.usb: phy_reset: success 8 [ 3.759026] mousedev: PS/2 mouse device common for all mice 9 [ 3.764506] usbcore: ...
USB OTG线中增加了一根USB ID线,当USB ID线上拉时,处于从机模式,当USB ID线接地时,处于主机模式。 2.2 总线结构 在有些场景下,我们期望将一个USB接口扩展为多个USB接口,这时我们就会使用到一个装置,也就是USB Hub,如下图所示: 因此,USB总线可能呈现出树状的拓扑接口吗,USB标准上说USB总线拓扑是一种分层星...
What is an OTG Cable? An OTG (On-The-Go) cable is a specialized cable that allows mobile devices to act as USB hosts. This means you can connect USB peripherals, like keyboards, mice, or flash drives, directly to your smartphone or tablet. ...
usb/host usb host usb主机控制器驱动(嵌入式otg:dwc_otg) usb/core usb 核心一些处理代码,所有的驱动相关处理都在这里,也都注册到它里面。 usb/usb-skeleton.c 经典的usb客户驱动框架,可以参考 当然还有其他这里不再说明。 这里我们主要分析khub的工作原理: 硬件层次是hub的工作,如何和host及其设备间通信及相应...
Software support The URS driver expects a software interface that allows control of VBus over the connector. This interface is SoC-specific. Contact your SoC vendor for more details. These USB OTG features aren't supported in Windows: Accessory Charger Adapter detection (ACA). ...
If a device only needs to connect to USB devices and never attach to another USB host, then the device can be an embedded host instead of a USB OTG product (please refer to the embedded host section above). If a device needs to connect to USB devices and USB hosts then it needs to...
This means that only two devices can be interconnected using USB-OTG. Under USB-OTG, the user plugs in two devices to establish a link. The host/peripheral negotiation is done by the devices without any input from the user to make the experience comfortable. USB-OTG defines two types of ...