- 您现在的位置：买卖IC网 > Datasheet目录368 > USB-100 (Fujitsu Semiconductor America Inc)KIT STARTER FOR USB Datasheet资料下载
参数资料
| 型号： | USB-100 |
| 厂商： | Fujitsu Semiconductor America Inc |
| 文件页数： | 56/143页 |
| 文件大小： | 0K |
| 描述： | KIT STARTER FOR USB |
| 标准包装： | 1 |
| 类型： | MCU |
| 适用于相关产品： | MB91F662 |
| 所含物品： | 板，线缆 |
| 产品目录页面： | 722 (CN2011-ZH PDF) |
| 相关产品： | 865-1099-ND - IC MCU 512KB FLASH FR80 120-LQFP |
| 其它名称： | 865-1108 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页当前第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页第122页第123页第124页第125页第126页第127页第128页第129页第130页第131页第132页第133页第134页第135页第136页第137页第138页第139页第140页第141页第142页第143页
4
4.1
What is a USB?
What is a USB?
USB stands for Universal Serial Bus .
In 1993, engineers from Compaq, Intel, Microsoft, and NEC gathered and jointly developed a
peripherals interface for next-generation PCs. This led to their release of the first USB 1.0
specifications (standards) in 1996. USB 1.1 was released in 1998 and USB 2.0 was released in
2000. For many years, the RS-232C and printer ports served as the main interface for
connecting peripherals to a PC. The problem with these legacy interfaces was that they were
limited to low transfer rates, allowed only one device to be connected per port, and thus required
an increase in ports to connect more devices.
This lead to an extensive array of connectors occupying the rear panels of PCs, including
separate ports for the keyboard, mouse, and display. The USB was developed to consolidate
these interfaces into a single connector that would allow connection of various peripherals.
4.2
Features of the USB
The USB has these features.
1. Ease of use
USB supports Plug-and-play and Hot Swapping , and Bus Power , making it easy to expand
PC peripherals and communicate between embedded devices.
Plug-and-play refers to the mechanism for automatically recognizing a device and installing
the proper driver when it is plugged in to the PC.
Hot Swapping is a general reference to the ability of plugging or unplugging devices with the
PC power still on. That is, the PC power does not have to be turned off or rebooted during or
after the device is plugged or unplugged.
Bus Power refers to the standard for supplying from the PC via the cable. (The opposite of
this is referred to as "Self-powered".)
2. Single master system
USB follows the single master system for transferring data.
We will explain using the PC as an example. The peripherals to a PC are controlled by the PC
(host), and data is exchanged between the peripheral and the host. Peripherals cannot transfer
data directly to another host. Furthermore, a peripheral cannot request a data transfer to the host.
The peripheral must perform data transfers at the request of the host. Because there is only one
55
相关PDF资料 |
PDF描述 |
|---|---|
| USBMLCF | USB BDM INTERFACE MC P&E |
| USBMLPPCBDM | MULTILINK P&E POWERPC USB |
| V-9767-L | DOOR ECONOGLAS 19" LOCKING |
| VC-9931 | CABINT VISNCB 20.54X23.62X23.62" |
| VC-9934B | VISIONCAB B 35.40X23.62X23.62" |
相关代理商/技术参数 |
参数描述 |
|---|---|
| USB10-0001 | 制造商:Black Box Corporation 功能描述:USB 2.0 COILED CABLE 1 "A" MALE TO "B" MALE |
| USB10-0002 | 制造商:Black Box Corporation 功能描述:USB 2.0 COILED CABLE 2 "A" MALE TO "B" MALE |
| USB10-0003 | 制造商:Black Box Corporation 功能描述:USB 2.0 COILED CABLE 3 "A" MALE TO "B" MALE |
| USB100EVAL | 制造商:Fairchild Semiconductor Corporation 功能描述: |
| USB1015-GF-N-A | 制造商:Global Connector Technology (GCT) 功能描述:USB1015 Serie gold Flash Nylon 9T USB Connector 制造商:Global Connector Technology (GCT) 功能描述:USB A Skt, Mid-TH, R/A, GF, offset 3.9mm, W/shell stake, T&R |
发布紧急采购，3分钟左右您将得到回复。