【正文】 .......................................................................................................................................8 軟件構(gòu)成 ..............................................................................................................................................94 系統(tǒng)硬件電路的設(shè)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(shè)計 .......................................................................................................................................18 接口的電平轉(zhuǎn)換 ......................................................................................................................18 TLC5510 外圍電路設(shè)計 ..........................................................................................................19 USB 電路設(shè)計 .....................................................................................................................................19 USB 與 FPGA 的接口電路 .....................................................................................................20 USB 的外圍電路 ......................................................................................................................21 FPGA 外圍電路設(shè)計 ..........................................................................................................................22 時鐘電路及復(fù)位電路 ..............................................................................................................22 下載配置與調(diào)試接口電路設(shè)計 ....................................................................................23 電源電路的設(shè)計 ................................................................................................................................24 抗干擾和 PCB 設(shè)計 ...........................................................................................................................265 系統(tǒng)軟件設(shè)計 ...............................................................................................................................................27 FPGA 邏輯設(shè)計 ..................................................................................................................................27 ADC 控制模塊設(shè)計 .................................................................................................................28 FIFO 在 FPGA 中的應(yīng)用 ........................................................................................................30 時鐘與分頻模塊設(shè)計 .............................................................................................................32 USB 控制模塊 ..........................................................................................................................33 FPGA 總體控制邏輯設(shè)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(xué)碩士學(xué)位論文II 固件功能 .................................................................................................................................38 固件基礎(chǔ) .................................................................................................................................39 固件程序的設(shè)計 .....................................................................................................................41 固件程序的實現(xiàn) .....................................................................................................................47 用戶程序的編寫 ................................................................................................................................49 應(yīng)用程序和 USB 設(shè)備的通信 ................................................................................................49 用戶界面程序 .........................................................................................................................506 測試 ...............................................................................................................................................................53 FPGA 與 USB 的通信測試 ....................................................................................................................53 USB 設(shè)備速率測試 ..............................................................................................................................54 系統(tǒng)功能測試 ...............................................................................................................................