2 USB 1.5Mb/s( )12Mb/s( ) 480Mb/s(USB 2.0 ) USB 1.2Mb/s 9.6Mb/s USB USB 1.1 USB USB 1.3 USB USB USB USB USB MCU USB USB USB USB Cypress EZUS

Transcription

1 1 USB frank ARM7 USB ARM7 MCU PDIUSBD12USB U USB U wxjbuaa@sohu.com 1.1 PC PC CPU Cetronix SCSI 10M RS232 USB IEEE1394 USB USB Mbps 12Mbps MbpsUSB Mbps IEEE b Mbps 3.2Gbps 100Mbps 1000Mbps 1.2 USB (Universal Serial Bus USB USB USB USB MP3 USB

2 2 USB 1.5Mb/s( )12Mb/s( ) 480Mb/s(USB 2.0 ) USB 1.2Mb/s 9.6Mb/s USB USB 1.1 USB USB 1.3 USB USB USB USB USB MCU USB USB USB USB Cypress EZUSB( 8051 USB USB USB Philips PDIUSBD11I2C PDIUSBD12( NS USBN9603/9604( NetChip NET2888 USB USB PC USB 1.4 Mass Storage FAT USB Mass Storage Class 1. USB Mass Storage Class Control/Bulk/Interrupt (CBI) Transport 2. USB Mass Storage Class Bulk-Only Transport 3. USB Mass Storage Class ATA Command Block 4. USB Mass Storage Class UFI Command Specification / / USB Bulk- Only Bulk / / CBI Control/Bulk/Interrupt / / ATA UFI USB Microsoft Windows Mass Storage USB Mass Storage PC Flash FAT Windows Windows FAT USB FAT

3 3 USB 2.1 USB USB USB Host USB Host USB PDIUSBD12 Set Mode 4 0 Non-ISO 1 ISO-OUT 2 ISO-IN 3 ISO-IO 0( ) ( ) ( ) ( )

4 ( ) ( / ) ( ) ( ) USB CPU 2 DMA I/O Mass Storage USB USB USB Monitors Communication devices Audio Human input Mass storage class subclass Configuration configuration interface USB USB endpoint USB USB Device Class Definitions descriptor USB

5 5 USB USBHost USB USB USB Mass Storage Class General Mass Storage SubclassCD ROMTapeSolid StateMass Storage Class Data Bulk Input Bulk Output General Mass Storage Device CPU SCSI2 Direct Access Storage Device USB SCSI2 logical blocks Bulk Only Mass Storage USB Mass Stroage 0 iserialnumber Serial Number Device

6 6 4 1 Configuration BulkOnly Data BulkInBulkOut binterfacesubclass binterfaceprotocol Interface BulkIn Bulk Out

7 7 BulkIn BulkOut binterfacesubclass Mass Storage

8 8 2.3 BulkOnly USB USB USB Host BulkOnly Mass Storage BulkOnly USB BulkIn BulkOut USB CBWCSW CBWCommand Block Wrapper USB Host binterfacesubclass SCSI USB SCSI CBW Host CSWCommand Status Wrapper Host CSW CBW Host USB CSW Host USB USB Host CBW CBW

9 9 dcbwsignature hLSB CBW dcbwtag dcswtag HostdCBWDataTransferLength CBW bmcbwflags 0 Host1 Host bcbwlun bcbwcblength CBWCB CBW CBWCD SCSI BulkOut Host USB Host CSW USB CSW dcswsignature CSW h dcswtag dcbwtag dcswdataresidue dcbwdatatransferlength Host CBW bcswstatus 0 CSW BulkIn 2.4 SCSI Bulk-Only CBW CBWCB Command Block DescriptorSCSI Microsoft Windows 12

10 10 12 SCSI Operation Code 3 Group Code Command Code 32 Logicol unit Number SCSI1 Logical block address Transfer length Write Parameter list length Mode Sense Allocation length SCSI Direct Accesss Mass Storage USB Host SCSI Direct Access Opcode INQUIRY TEST UNIT READY FORMAT UNIT LOCK-UNLOCK CACHE MODE SELECT(6) MODE SENSE(6) PRE-FETCH PREVENT-ALLOW MEDIUM REMOVAL READ(6) READ(10) READ CAPACITY READ DEFECT DATA READ LONG WRITE LONG REASSIGN BLOCKS RECEIVE DIAGNOSTIC RESULTS SEND DIAGNOSTIC RELEASE RESERVE REZERO UNIT SEEK(10) SET LIMITS START STOP UNIT SYNCHRONIZE CACHE VERIFY 12h 00h 04h 36h 15h 1Ah 34h 1Eh 08h 28h 25h 37h 3Eh 3Fh 07h 1Ch 1Dh 17h h 01h 2Bh 33h 1Bh 35h 2Fh WRITE(6) WRITE(10) 0Ah 2Ah WRITE AND VERIFY 2Eh WRITE SAME 41h

11 11 INQUIRY 1INQUIRY Host INQUIRYRead CapacityUFI Mode Sense Host READ 0 0 MBR PREVENT-ALLOW MEDIUM REMOVAL TEST UNIT READY CSW Flash READY CSW 2.4 FAT FAT FATFAT12FATFAT32 Flash 1 Reserved Region Reserved Region BPB(BIOS Parameter Block)

12 12 BS_jmpBoo t 0 3 EB jmpboot[0] = 0xEB, jmpboot[1] = 0x??, jmpboot[2] = 0x90 jmpboot[0] = 0xE9, jmpboot[1] = 0x??, jmpboot[2] = 0x?? 0x?? BS_OEMName 3 8 Microsoft FAT MSWIN4.1 BPB_BytsPerSec , 1024, Dos 512 Flash Page 512 BPB_SecPerClus , 2, 4, 8,, 32, BPB_BytsPerSec*BPB_SecPerClus>32K (32 * 1024) 32K BPB_RsvdSecCn t FAT12 FAT 1 FAT32 BPB_TotSec32 BPB_NumFATs 1 FAT 2 BPB_RootEntCnt 17 2 FAT12 FAT 32 FAT32 BPB_BytsPerSec FAT 512 BPB_TotSec 19 2 FAT FAT32 FAT12 FAT 0x10000BPB_TotSec32 BPB_Media xF8 F00xF0, 0xF8, 0xF9, 0xFA, 0xFB, 0xFC, 0xFD, 0xFE, 0xFF FAT FAT[0] BPB_FATSz 22 2 FAT12/FAT FAT32 0 BPB_FATSz32 FAT32 BPB_SecPerTrk 24 2 BPB_NumHeads 26 2 BPB_HiddSec 28 4 FAT BPB_TotSec FAT32 FAT12/FAT 0x10000

13 13 BS_DrvNum x00 0x80 BS_Reserved NT 0 BS_BootSig 38 1 (0x29) FAT BS_VolID 39 4 BS_VolLab BS_VolLab BS_FilSysType 54 8 FAT12FAT FAT Executable Code 62 Executable AA Marker 2FAT FAT File Allocation Table 32K FAT FAT FAT FAT 0 FFF8 FFF8 1 FFFF FFFF h 0002h-FFEFh FFF0h-FFF6h FFF7h FFF8h-FFFF FAT FAT FAT FAT FAT FAT32 FAT

14 KB FAT KB 2048MB 2G FAT 2G 2G FAT FAT FAT FAT 3 Root Directory Region FAT 32 ( ) 00H 8 08H 3 ASCII 00H= 05H= E5H 05H, E5H E5H= 2EH= ASCII BH 1 0CH 10 H 2 :(unsigned bit-bit integer) time=hr*2048+min*32+sec+2 *: LSB 18H 2 1AH 2 1CH 4 :(unsigned bit-bit integer) *: time=(yr-1980)*512+mon*32+day LSB FAT

15 FAT FAT FAT 5 MBR DBR FAT DIR DATA MBR DBR i i i i i+j i+j FAT i, /32K FAT i= FAT FAT DIR j DATA 1MBRMain Boot Record MBR BDH 64 1BEH 1FDH DPT(Disk Partition Table ), "55AA" 1FEH 1FFH BD 01BE 01FD 01FE 01FF MBR AA MBR

16 MBR Fdisk.com MBR B FE BF FC 3F E 86 BB 00 "80" " " "0B" FAT32 04FAT 07NTFS "FE BF FC" "3F " 63"7E 86 BB 00" DBR DBRDos Boot Record BPBBios Parameter Block MBR DOS Io.sys Msdos.sys BPB FAT FAT 3FAT DBR FATFile Allocation Table DIR DIRDirectory FAT FAT DIR FAT

17 17 5 DATA DIR Flash FAT Flash U Flash M K9F2808U0A-YCB0 Flash 1024 Block 32 Page Flash Flash 1 Page 2 3 Block Block Flash Page 1 2 Block K FAT FAT LBALogical Block Address Flash LBA 0x Logical Block Address Flash Block Logical Block Address0x20 Flash Page Logical Block Address %0x20 32 Logical Block Address Block Page Flash Block Page BPB LBA U Flash MBR DBRFATDIR DATA Flash Block LBA BlockPage 0 0,0 512 MBRBPBExcutable Code+55AA 1~2 0,1~0, FAT FAT

18 18 3~4 0,3~0, FAT FAT 5~39H (BPB ) 40H~ Host READ Flash Host MBR PC Read Write USB READ WRITE Flash Flash 2.5 Flash Flash USB Host 512 Flash Block Block USB Host 32K ARM7 2M SDRAM 8051 Flash Block Flash USB Firmware USB USB PC ( Bus HoundWINRTUSB USB ( USB PC USB 3.1 PDIUSBD12

19 19 PDIUSBD12 1)GND VDD 3.3V 5V 3.3V Vout3.3 VDD 3.3V 5V Vout V D 3.3V U USB 5V GND USB GNDVDD USB VDDDD USB 2)DATA<0>~ DATA<7>WR_NRD_NINT_NXTAL1 XTAL2 3)GND 1M USB VCCUSB VCCD D GND 10K 1M 10K EOT_N USB USB SoftConnect D12 USB SoftConnect 4)CS_N DMACK_N DMA DMACK_N CS_N 5ALE A0 USB MCU a) ALE MCU ALEA0 D12 ALE USB D0 D12 USB D0 MCU ALE D12 D0 D12b) MCU ALE A0 DATA<0>~DTAT<7> A0 A0D12 D0 A0 D12 6CLOCKOUT MCU SUSPEND IO GL_N USB a) PDIUSBD12 b) USB Host Setup c) USB host

20 20 USB 0 USB USB PDIUSBD12 PDIUSBD12 PDIUSBD12 USB USB USB USB USB USB 0 0 USB USB USB USB USB D12 D12 0 D12 D12 0 a) b) Philips D12 USB D12 Philips

21 U USB Main.c Fat.c flash.c Chap9.c bulk-only.c Isr.c D12ci.c Fat Flash Flash Chap9 0 USB Bulk-Only Mass Storage Bulk-Only D12 1USB PC USB 2 USB USB VID PID PC 3 PC 4 Mass Storage BulkOnly PC Mass Storage Device5 Bulk Only Inquiry 6 UFI SCSI 0 BPB FAT Flash 7 Write Flash 8 U FAT FAT FAT 3.3 USB USB USB CLKOUT 12M 4M CLKOUT 12M 4M USB USB SoftConnect GL_N PC USB Bus Hound USB USB

22 22 MCU MCU D12 INT_N SoftConnect 1 0 Setup Setup D12 PDIUSBD12 INT_N 0 (D0D5) PDIUSBD12 Control IN 64Bytes 3.4 USB Windows USB GetDeviceDescriptor Length 2 type 0x01 Device 2 Device DeviceDescriptor DeviceDescriptor SetAddress GetDeviceDescriptor 18 B 2 GetConfigDescriptor 2 0x02 config Configuration DescriptorInterface Descriptor EndPooint Descriptor GetStringDescriptor String LanguageID product string ConfigDescriptor 2 PlugIn SetConfigurationGetConfiguration GetInterface USB LSB MCU ARM LSB 8051 MSB PhlipsVID 0471H Device Descriptor idvendor 71H04H USB

23 23 Bus Hound Bus Hound USB Phase Data Device Device Device Info USB GET DESCRIPTOR SET CONFIG Save Devices Settings Phase Bus Hound USB Bus Hound 3.5 Mass Storage Mass Storage BulkOnly Bus Hound DI BulkOnly CBW USB BulkIn BulkOutIn Out Device Host Host Device BulkIn Device Host BulkOut UFISCSI BulkIn

24 24 Host CSW BulkOut 3.6 SCSI SCSI WRITE READ Host Host Device CSW Host WRITE Host Flash 3.7 Flash Flash ReadPage WritePage

25 C C C Host WRITE 512 USB Device CSW 7 7 CSWHost Host CSW 4.2,