南京沁恒電子有限公司的CH341接口轉(zhuǎn)換芯片。用于RS-232到USB的轉(zhuǎn)換
上傳時(shí)間: 2014-01-15
上傳用戶:firstbyte
幾個(gè)USB轉(zhuǎn)串口RS—232c的原理圖,配轉(zhuǎn)換芯片的datasheet。
標(biāo)簽: 232c USB 轉(zhuǎn)串口 原理圖
上傳時(shí)間: 2014-01-11
上傳用戶:1101055045
USB、串口、并口是PC機(jī)和外設(shè)進(jìn)行通訊的常用接口,但對(duì)于數(shù)據(jù)量大的圖像來(lái)說(shuō),若利用串行RS-232協(xié)議進(jìn)行數(shù)據(jù)采集,速度不能達(dá)到圖像數(shù)據(jù)采集所需的要求;而用USB進(jìn)行數(shù)據(jù)采集,雖能滿足所需速度,但要求外設(shè)必須支持USB協(xié)議,而USB協(xié)議與常用工程軟件的接口還不普及,給使用帶來(lái)困難。有些用戶為了利用標(biāo)準(zhǔn)并行口(SPP)進(jìn)行數(shù)據(jù)采集,但SPP協(xié)議的150kb/s傳輸率對(duì)于圖像數(shù)據(jù)采集,同樣顯得太低。因此,為了采集數(shù)據(jù)量大的圖像數(shù)據(jù),本文采用了具有較高傳輸速率的增強(qiáng)型并行口協(xié)議(EPP)和FPGA,實(shí)現(xiàn)對(duì)OV
上傳時(shí)間: 2013-08-31
上傳用戶:wsf950131
USB-1620A工業(yè)多串口卡采用的是最新的USB2.0接口技術(shù),兼容的USB2.0以下接口。可以應(yīng)用于傳統(tǒng)的RS-232串行通訊領(lǐng)域,擴(kuò)充PC機(jī)標(biāo)準(zhǔn)RS-232通訊端口的數(shù)量,如工業(yè)自動(dòng)化制作、POS系統(tǒng)和ATM的應(yīng)用。
上傳時(shí)間: 2013-10-16
上傳用戶:diets
The PL2303 USB to Serial adapter is your smart and convenient accessory forconnecting RS-232 serial devices to your USB-equipped Windows host computer. Itprovides a bridge connection with a standard DB 9-pin male serial port connector inone end and a standard Type-A USB plug connector on the other end. You simplyattach the serial device onto the serial port of the cable and plug the USB connectorinto your PC USB port. It allows a simple and easy way of adding serial connectionsto your PC without having to go thru inserting a serial card and traditional portconfiguration.This USB to Serial adapter is ideal for connecting modems, cellular phones, PDAs,digital cameras, card readers and other serial devices to your computer. It providesserial connections up to 1Mbps of data transfer rate. And since USB does not requireany IRQ resource, more devices can be attached to the system without the previoushassles of device and resource conflicts.Finally, the PL-2303 USB to Serial adapter is a fully USB Specification compliantdevice and therefore supports advanced power management such as suspend andresume operations as well as remote wakeup. The PL-2303 USB Serial cable adapteris designed to work on all Windows operating systems.
標(biāo)簽: Adapter Serial 2303 USB
上傳時(shí)間: 2013-11-01
上傳用戶:ghostparker
USB、串口、并口是PC機(jī)和外設(shè)進(jìn)行通訊的常用接口,但對(duì)于數(shù)據(jù)量大的圖像來(lái)說(shuō),若利用串行RS-232協(xié)議進(jìn)行數(shù)據(jù)采集,速度不能達(dá)到圖像數(shù)據(jù)采集所需的要求;而用USB進(jìn)行數(shù)據(jù)采集,雖能滿足所需速度,但要求外設(shè)必須支持USB協(xié)議,而USB協(xié)議與常用工程軟件的接口還不普及,給使用帶來(lái)困難。有些用戶為了利用標(biāo)準(zhǔn)并行口(SPP)進(jìn)行數(shù)據(jù)采集,但SPP協(xié)議的150kb/s傳輸率對(duì)于圖像數(shù)據(jù)采集,同樣顯得太低。因此,為了采集數(shù)據(jù)量大的圖像數(shù)據(jù),本文采用了具有較高傳輸速率的增強(qiáng)型并行口協(xié)議(EPP)和FPGA,實(shí)現(xiàn)對(duì)OV7620CMOS圖像傳感器進(jìn)行高速數(shù)據(jù)采集,它最高速率可以達(dá)到2Mb/s。
上傳時(shí)間: 2015-08-29
上傳用戶:
USB子類(lèi)協(xié)議.part2
上傳時(shí)間: 2013-05-22
上傳用戶:eeworm
USB HID Demonstrator Release 1.0.1
標(biāo)簽: Demonstrator Release USB HID
上傳時(shí)間: 2013-04-15
上傳用戶:eeworm
USB子類(lèi)協(xié)議.part3
上傳時(shí)間: 2013-08-03
上傳用戶:eeworm
usb_cdc AVR309 USB協(xié)議轉(zhuǎn)換到UART
標(biāo)簽: usb_cdc UART AVR 309
上傳時(shí)間: 2013-07-19
上傳用戶:eeworm
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