本文選題：現(xiàn)場(chǎng)總線　切入點(diǎn)：媒體結(jié)合單元　出處：《沈陽(yáng)工業(yè)大學(xué)》2015年碩士論文

【摘要】：現(xiàn)場(chǎng)總線是一種工業(yè)控制領(lǐng)域的局域網(wǎng)，已經(jīng)在工業(yè)現(xiàn)場(chǎng)得到了廣泛應(yīng)用。媒體結(jié)合單元MAU（Medium Attachment Unit）芯片是總線儀表獲取能量和交換數(shù)據(jù)的關(guān)鍵部件，目前對(duì)現(xiàn)場(chǎng)總線MAU芯片的研究因其重要作用以及高的技術(shù)難點(diǎn)而具有重要意義。 MAU芯片是一種大規(guī)�；旌闲盘�(hào)集成電路，具有較高的系統(tǒng)復(fù)雜性。本文給出了一種MAU芯片中各個(gè)數(shù)字電路模塊的設(shè)計(jì)和實(shí)現(xiàn)方法。課題來(lái)源于一個(gè)實(shí)際工程項(xiàng)目，目標(biāo)是設(shè)計(jì)一種與國(guó)外某款芯片兼容的MAU芯片。由于原芯片工藝與現(xiàn)有國(guó)內(nèi)工藝差距較大，采用了逆向分析與正向設(shè)計(jì)結(jié)合的設(shè)計(jì)方法。為全面掌握原芯片功能，首先對(duì)原芯片進(jìn)行了深度的逆向分析。利用Chip Analyzer軟件對(duì)整個(gè)芯片電路進(jìn)行了提取和初步整理，通過(guò)查閱資料對(duì)其進(jìn)行了功能模塊劃分。該電路包括電源模塊、發(fā)送模塊，接收模塊，數(shù)字控制模塊，修調(diào)和燒寫(xiě)控制模塊，，DC/DC變換模塊等。其中數(shù)字控制模塊的主要功能是根據(jù)來(lái)自各個(gè)模塊的狀態(tài)信號(hào)決定系統(tǒng)工作狀態(tài)，并依據(jù)系統(tǒng)的狀態(tài)控制其它模塊工作，除此之外還具有監(jiān)視通信數(shù)據(jù)合理性的作用。除數(shù)字控制模塊外，修調(diào)和燒寫(xiě)控制模塊和DC/DC變換模塊等以數(shù)字電路為主的模塊也屬于本文工作內(nèi)容。在充分理解原芯片功能的基礎(chǔ)上，采用華虹NEC0.35um BCD工藝重新設(shè)計(jì)了上述電路模塊。對(duì)工藝差異不大的電路模塊保持了原有電路結(jié)構(gòu)但修改了晶體管參數(shù)。對(duì)工藝差異較大的部分做了包括電路結(jié)構(gòu)在內(nèi)的修改，并在不影響兼容性的前提下，改進(jìn)了電路性能。仿真驗(yàn)證表明新設(shè)計(jì)滿足功能要求并能達(dá)到性能指標(biāo)，版圖設(shè)計(jì)通過(guò)了DRC及LVS檢查，項(xiàng)目通過(guò)驗(yàn)收，等待流片。
[Abstract]:Field bus is a local area network in the field of industrial control, and has been widely used in industrial field. The MAU(Medium Attachment unit chip is the key component of bus instrument to obtain energy and exchange data. At present, the research of fieldbus MAU chip is of great significance because of its important role and high technical difficulties. MAU chip is a large scale mixed signal integrated circuit with high system complexity. In this paper, a design and implementation method of each digital circuit module in MAU chip is presented. The aim is to design a kind of MAU chip compatible with some foreign chip. Because of the gap between the original chip process and the existing domestic technology, a design method combining reverse analysis and forward design is adopted to master the function of the original chip. Firstly, the deep reverse analysis of the original chip is carried out. The whole chip circuit is extracted and preliminarily arranged by using Chip Analyzer software, and the functional modules are divided by consulting the data. The circuit includes power supply module, transmission module, power module and transmission module. The main function of the digital control module is to determine the working state of the system according to the state signals from each module. And according to the state of the system control other modules, in addition to the role of monitoring the rationality of communication data. In addition to the digital control module, The digital circuit modules, such as the repair and burn control module and the DC/DC transform module, also belong to the work of this paper. On the basis of fully understanding the function of the original chip, the function of the original chip is fully understood. The circuit modules mentioned above have been redesigned by using Huahong NEC0.35um BCD process. The original circuit structure has been kept for the circuit module with little process difference, but the transistor parameters have been modified. The simulation results show that the new design can meet the functional requirements and meet the performance requirements. The layout design has passed DRC and LVS checks, the project has passed the acceptance, waiting for the flow sheet.
【學(xué)位授予單位】：沈陽(yáng)工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN402

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