基于PDIUSBD12和K9F2808簡易USB閃存設(shè)計(jì)

電子機(jī)電論文編號:JD209        字?jǐn)?shù):17943,頁數(shù):73      

目錄
摘要 I
Abstract II
目錄 III
1緒論 1
1.1 PC接口簡介 1
1.2 USB 接口分析 1
1.3 USB 器件的選擇 2
1.4 Mass Storage協(xié)議與FAT16文件系統(tǒng) 2
2 USB總線結(jié)構(gòu) 4
2.1 總線拓?fù)浣Y(jié) 4
2.2 USB設(shè)備 4
2.2.1 USB HUB 6
2.2.2 即插即用 6
2.2.3 設(shè)備電源 7
2.2.4 設(shè)備的掛起 7
2.3 USB主機(jī) 7
2.4 USB數(shù)據(jù)流 8
2.5 USB的端點(diǎn) 11
3協(xié)議 13
3.1 Mass Storage 協(xié)議 13
3.2 Bulk－Only傳輸協(xié)議 17
3.3 SCSI指令集 19
3.4 FAT16 文件系統(tǒng) 23
3.4.1 FAT 文件系統(tǒng)結(jié)構(gòu) 23
3.4.1 FAT 區(qū) 26
3.4.2根目錄區(qū)（Root Directory Region） 27
3.4.3文件和目錄數(shù)據(jù)區(qū) 28
3.4.4 Flash盤的FAT結(jié)構(gòu) 29
4固件程序的實(shí)現(xiàn) 31
4.1主循環(huán)——MAINLOOP.C 31
4.2 中斷服務(wù)程序——D12ISR.C 33
4.2.1 控制端點(diǎn)處理 34
4.2.2 普通端點(diǎn)處理 35
4.2.3 總線復(fù)位和掛起改變 36
4.2.4 數(shù)據(jù)提交函數(shù) 36
4.3 標(biāo)準(zhǔn)設(shè)備請求處理——D12SETUP.C 37
4.3.1 獲取狀態(tài) GET STATUS（00H） 37
4.3.2 清除特性 CLEAR FEATURE（01H） 38
4.3.3 設(shè)置特性 SET FEATURE（03H） 38
4.3.4 設(shè)置地址 SET ADDRESS（05H） 39
4.3.5 獲取描述符 GET DESCRIPTOR（06H） 41
4.3.6 獲取配置信息GET CONFIGURATION（08H） 41
4.3.7 設(shè)置配置SET CONFIGURATION（09H） 42
4.3.8 獲取接口信息 GET INTERFACE（0AH） 42
4.3.9 設(shè)置接口 SET INTERFACE（0BH） 42
4..4 NAND FLASH操作程序——NFLASH32.C 43
4.4.1 塊擦除函數(shù) 43
4.4.2 頁拷貝函數(shù) 44
4.4.3 寫預(yù)處理函數(shù) 45
4.4.4 寫FLASH函數(shù) 45
4.4.5 讀預(yù)處理函數(shù) 46
4.4.6 讀FLASH函數(shù) 46
5固件調(diào)試 48
5.1檢查USB器件是否正常工作 48
5.2設(shè)備枚舉 48
5.3 BULK_ONLY傳輸協(xié)議命令處理 49
5.4 FLASH的讀寫 50
結(jié)論 52
致謝 53
參考文獻(xiàn) 54
附錄 A USB接口芯片命令總匯 55
A1．初始化命令 56
A2．?dāng)?shù)據(jù)流命令 60
A3．?dāng)?shù)據(jù)流命令 67

摘要
USB（Universal Serial Bus）是一種通用串行總線。是一種快速、靈活的總線接口。與其它通信接口比較，USB接口的最大特點(diǎn)是易于使用，這也是USB的主要設(shè)計(jì)目標(biāo)。作為一種高速總線接口，USB適用于多種設(shè)備，比如數(shù)碼相機(jī)、MP3播放機(jī)、高速數(shù)據(jù)采集設(shè)備等。易于使用還表現(xiàn)在USB接口支持熱插拔，并且所有的配置過程都由系統(tǒng)自動完成，無需用戶干預(yù)。
本論文簡要介紹USB（通用串行總線）大容量存儲設(shè)備類，給出USB控制PDIUSBD12和閃存K9F2808的原理框圖，并以這兩個芯片為例設(shè)計(jì)出存儲設(shè)備的電路圖，最后列出程序流程圖并加以調(diào)試。
論文主要對以下幾個方面作了研究：
①USB系統(tǒng)枚舉過程的實(shí)現(xiàn)。
②K9F2808數(shù)據(jù)讀寫控制。
③文件系統(tǒng)在K9F2808上實(shí)現(xiàn)。  
④繪制整體電路圖并編相應(yīng)各部分程序。
該設(shè)計(jì)主要以PDIUSBD12與K9F2808芯片研究為核心。主要包括USB接口、USB總線結(jié)構(gòu)、USB協(xié)議、FAT16/32文件系統(tǒng)結(jié)構(gòu)及各部分相關(guān)源程序調(diào)試及其運(yùn)行等幾大部分。

關(guān)鍵詞：USB　PDIUSBD12　K9F2808　移動閃存
Abstract
USB (Universal Serial Bus ) is a kind of common serial bus . It is a kind of fast , flexible bus interface . Compared with other communication interface, the greatest characteristic of USB interface is easy to use, this is a main design object of USB too. As a kind of high-speed bus interface, USB is suitable for many kinds of apparatus such as digital camera , MP3 broadcaster , high-speed data gather the apparatus etc.. Easy to use , display interface support hot to insert , draw in USB , and all disposition course is finished automatically by the system still, do not need users to intervene.
This thesis introduces USB (the common serial bus ) apparatus of large memory briefly , provide USB control PDIUSBD12 and flashing memory principle block diagram of K9F2808 , take these two chips as an example , design circuit diagram to store the apparatus, list the procedure flow diagram finally and debug .
Have mainly studied several following respects in thesis:
①USB system enumerates the realization of the course.
②K9F2808 data read and written and controlled.
③The file system is realized on K9F2808.
④Draw whole circuit diagram and compile corresponding all part of procedures.
 This design mainly regards PDIUSBD12 and K9F2808 chip research as the core. Mainly structure , interface of USB and bus of USB., agreement of USB and file of FAT16/32 , systematic structure and every relevant source program debug and odd major part of running etc

Keywords: USB,PDIUSBD12,K9F2808,mobile flash