Universal Serial Bus (USB) is a communications architecture that gives a personal computer (PC) the ability to interconnect a variety of devices using a simple four- wire cable. The USB is actually a two-wire serial communication link that runs at either 1.5 or 12 megabits per second (mbs). USB protocols can configure devices at startup or when they are plugged in at run time. These devices are broken into various device classes. Each device class defines the common behavior and protocols for devices that serve similar functions. Some examples of USB device classes are shown in the following table
標簽： communications architecture Universal computer
上傳時間： 2015-12-08
上傳用戶：stvnash
usb 1.1 規范 The 1.1 revision of the specification is intended for product design. Every attempt has been made to ensure a consistent and implementable specification. Implementations should ensure compliance with this revision.
標簽： specification 1.1 revision intended
上傳時間： 2015-12-16
上傳用戶：WMC_geophy
This book is for developers who design and program devices that use the Universal Serial Bus (USB) interface. The goal is to introduce you to USB and to help you get your devices up and communicating as quickly and easily as possible.
標簽： developers Universal devices program
上傳時間： 2014-09-07
上傳用戶：sdq_123
This directory contains the memtest 8051 firmware for the Anchor Chips EZ-USB chip. The purpose of this software is to test the different memory segments in the Ez-Usb chip. This example will output the string "good" on the 7 segment LED if the mem test passes, or it will output the first address where the memtest fails.
標簽： directory the contains firmware
上傳時間： 2013-12-16
上傳用戶：gdgzhym
usb bulk 傳輸例程。 * The bulkusb driver is a generic function driver, based on the Windows Driver Model (WDM). * Supports Plug and Play(PnP), Power Management(PM), Windows Management Instrumentation (WMI) and the Selective Suspend (SS) features. * This sample is based off the selSusp DDK sample. Please refer the selSusp sample and the DDK docs to understand the handling of PnP, PM, WMI and SS features and implementations. * The USB device used for this sample is a generic Intel I82930 USB evaluation board programmed with a simple loopback test using a 64 KB circular buffer. None of the code in the sample is specific to this controller chip.
標簽： driver function Windows bulkusb
上傳時間： 2016-04-25
上傳用戶：270189020
This project shows how to use the IOKit notification mechanism to register to be notified when devices come and go. It uses the Cypress/Anchor EZ-USB chip. (Look at the following example for another way to get notified when a device is unplugged).
標簽： notification mechanism notified register
上傳時間： 2013-12-01
上傳用戶：zhuimenghuadie
用AVR單片機設計的MP3播放器 功能： MP3 Player IDE ATA interface FAT 32 with long file name support USB interface On board power supply (input from 7v to 20v DC) Bootloader firmware upgradeable via USB port Infrared bi-directional interface Remote Control Back light graphic LCD worked with only 2x AA batteries In sleep mode sink less than 1uA (2.5mA in active mode) 5 buttons for easy navigation Long range (more than 20 feets)
標簽： MP3 interface support Player
上傳時間： 2016-07-02
上傳用戶：fandeshun
This document teach how you interface the microcontroller to the devices using i2c , spi and serial rs-232 and others.
標簽： microcontroller interface the document
上傳時間： 2014-12-03
上傳用戶：dengzb84
This design package includes reference materials for creating a USB - PS/2 combination mouse that auto-detects the interface and configures itself to operate on the appropriate bus.
標簽： combination materials reference creating
上傳時間： 2014-12-03
上傳用戶：時代電子小智
The MAX481E, MAX483E, MAX485E, MAX487E–MAX491E, and MAX1487E are low-power transceivers for RS-485 and RS-422 communications in harsh environments. Each driver output and receiver input is protected against ±15kV electrostatic discharge (ESD) shocks, without latchup. These parts contain one driver and one receiver. The MAX483E, MAX487E, MAX488E, and MAX489E feature reduced slewrate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, thus allowing error-free data transmission up to 250kbps. The driver slew rates of the MAX481E, MAX485E, MAX490E, MAX491E, and MAX1487E are not limited, allowing them to transmit up to 2.5Mbps.
標簽： MAX transceivers 485 low-power
上傳時間： 2013-12-22
上傳用戶：小寶愛考拉
