【正文】 .1 研究背景與意義 ...................................................................................................................................1 國內(nèi)外研究現(xiàn)狀與趨勢 ......................................................................................................................1 本文研究的主要內(nèi)容 ..........................................................................................................................22 USB 簡介 ..........................................................................................................................................................3 USB 總線的特點 ...................................................................................................................................3 USB 總線結(jié)構(gòu) .......................................................................................................................................3 USB 設備的開發(fā)流程 ...........................................................................................................................53 系統(tǒng)總體設計 .................................................................................................................................................7 系統(tǒng)的性能指標 ..................................................................................................................................7 系統(tǒng)方案的確定 ..................................................................................................................................7 硬件構(gòu)成 ..............................................................................................................................................8 軟件構(gòu)成 ..............................................................................................................................................94 系統(tǒng)硬件電路的設計與實現(xiàn) .......................................................................................................................11 FPGA ...................................................................................................................................................11 FPGA 簡介 ...............................................................................................................................11 FPGA 芯片的選擇 ...................................................................................................................12 AD 轉(zhuǎn)換器的選擇 ...............................................................................................................................13 USB 接口芯片的選擇 .........................................................................................................................15 CY7C68013A 芯片結(jié)構(gòu) ..........................................................................................................15 CY7C68013A 的端點緩沖區(qū) ..................................................................................................16 CY7C68013A 的接口模式 ......................................................................................................17 AD 電路設計 .......................................................................................................................................18 接口的電平轉(zhuǎn)換 ......................................................................................................................18 TLC5510 外圍電路設計 ..........................................................................................................19 USB 電路設計 .....................................................................................................................................19 USB 與 FPGA 的接口電路 .....................................................................................................20 USB 的外圍電路 ......................................................................................................................21 FPGA 外圍電路設計 ..........................................................................................................................22 時鐘電路及復位電路 ..............................................................................................................22 下載配置與調(diào)試接口電路設計 ....................................................................................23 電源電路的設計 ................................................................................................................................24 抗干擾和 PCB 設計 ...........................................................................................................................265 系統(tǒng)軟件設計 ...............................................................................................................................................27 FPGA 邏輯設計 ..................................................................................................................................27 ADC 控制模塊設計 .................................................................................................................28 FIFO 在 FPGA 中的應用 ........................................................................................................30 時鐘與分頻模塊設計 .............................................................................................................32 USB 控制模塊 ..........................................................................................................................33 FPGA 總體控制邏輯設計 .......................................................................................................35 驅(qū)動程序 ............................................................................................................................................36 驅(qū)動程序簡介 .........................................................................................................................36 驅(qū)動程序的安裝 .....................................................................................................................37 固件程序 ............................................................................................................................................38西安理工大學碩士學位論文II 固件功能 ......................................