本文選題：USB2.0 + TRANSEVEIVER�。� 參考：《復(fù)旦大學(xué)》2012年碩士論文

【摘要】：USB2.0OTG(USB On-The-Go)技術(shù)是USB2.0的發(fā)展與完善,具有USB2.0OTG接口的便攜式設(shè)備擺脫了對(duì)PC機(jī)的依賴,可以實(shí)現(xiàn)兩個(gè)非PC設(shè)備的直接通信并支持通信過程中主機(jī)和外設(shè)角色的相互切換；它同時(shí)符合USB2.0協(xié)議,最高傳輸速度可達(dá)480Mbps。USB2.0OTG在USB2.0的基礎(chǔ)上了增加了SRP(會(huì)話請(qǐng)求協(xié)議)和HNP(主機(jī)交換協(xié)議)。 USB2.0協(xié)議,USB2.0OTG補(bǔ)充協(xié)議以及UTMI+協(xié)議是整個(gè)電路設(shè)計(jì)的基礎(chǔ),通過學(xué)習(xí),理解了USB2.0OTG的工作原理,并在整個(gè)項(xiàng)目中承擔(dān)了OTG模塊的設(shè)計(jì)和TRANCEIVER模塊中接收電路的設(shè)計(jì)。 本文設(shè)計(jì)的OTG模塊包括三個(gè)電壓比較器,SRP電路以及工D檢測(cè)電路。三個(gè)電壓比較器閾值為：4.6v,1.4v,0.5v,分別用來指示VBUS電壓是否有效,A_device和B-device SRP電壓是否有效以及B-device SRP的初始化情況；SRP電路可以通過下拉電阻給VBUS放電以達(dá)到SRP的初始化條件而通過上拉電阻充電來發(fā)起SNP;ID檢測(cè)電路可以指示插入插頭的類型,判斷相連設(shè)備的角色。 本文討論了USB2.0接口電路的構(gòu)成與基本原理,并重點(diǎn)闡述了高速數(shù)據(jù)接收電路和包絡(luò)信號(hào)檢測(cè)電路的設(shè)計(jì),并給出了相關(guān)仿真。
[Abstract]:USB2.0OTG(USB On-The-Gois technology is the development and perfection of USB2.0. Portable devices with USB2.0OTG interface can get rid of the dependence on PC, and can realize direct communication between two non-PC devices and support the switch between host and peripheral roles in the communication process. It also conforms to the USB2.0 protocol, and the maximum transmission speed of 480Mbps.USB2.0OTG is increased based on USB2.0 (session request Protocol) and HNP (Host Exchange Protocol). USB2.0 protocol, USB2.0OTG supplementary protocol and UTMI protocol are the basis of the whole circuit design. Through studying, we understand the working principle of USB2.0OTG, and undertake the design of OTG module and the receiving circuit in TRANCEIVER module in the whole project. The OTG module designed in this paper includes three voltage comparators and D detection circuits. The threshold of the three voltage comparators is: 4.6v / 1.4v / 0.5 v. respectively, which indicates whether the VBUS voltage is effective or not and whether the B-device SRP voltage is effective or not, and the initialization of the B-device SRP circuit can discharge the VBUS by pull-down resistor to reach the initialization condition of SRP. The SNPID detection circuit is initiated by charging the pull up resistor to indicate the type of plug to be inserted. Judge the role of the connected device. In this paper, the structure and basic principle of USB2.0 interface circuit are discussed, and the design of high speed data receiving circuit and envelope signal detecting circuit are emphasized, and the related simulation is given.
【學(xué)位授予單位】：復(fù)旦大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類號(hào)】：TP336;TN710

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