📄 usb_peripherals.html
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html><head> <title></title> <link rel="stylesheet" media="screen" type="text/css" href="./style.css" /> <link rel="stylesheet" media="screen" type="text/css" href="./design.css" /> <link rel="stylesheet" media="print" type="text/css" href="./print.css" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /></head><body><a href=start.html>start</a></br><h1><a name="usb_peripherals" id="usb_peripherals">USB Peripherals</a></h1><div class="level1"><p> Since the release of the 2.4 kernel, Linux users gained serious USB support for a wide range of devices. The Linux USB subsystem, integrated in the kernel and already supported by most Linux distributions, including uClinux, supports all necessary features like plug-and-play, USB bandwith allocation and more than 100 ports per bus. USB development is very active in the 2.6 kernel tree. </p><p>Before you can connect a USB Peripherals, you must have a working host device in your system. For Desktop Linux - this usually means a Universal Host Controller Interface (UHCI, used by Intel and Via motherboard chipsets) and the Open Host Controller Interface (OHCI, used by Compaq, Apple, SiS, OPTi, Lucent and ALi chipsets). These are a common register level interface, allowing Linux developers to write two drivers, and making USB support available to anyone with a modern motherboard. Since most embedded Linux do not use UHCI or OHCI, you will need a specific Host Controller driver for the chipset you want to use.</p><p>USB perfectly abstracts any Blackfin Hardware dependencies 鈥⌨️ 快捷键说明
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