參數(shù)資料
型號： DRM061
英文描述： USB Thumb Drive
中文描述： USB拇指驅(qū)動器
文件頁數(shù)： 17/26頁
文件大小： 485K
代理商： DRM061
Logical to Physical interrelation
USB Thumb Drive Designer Reference Manual, Rev. 0
Freescale Semiconductor
17
4.3 Logical to Physical interrelation
Figure 4-3. Logical to Physical interrelation
Figure 4-3
shows the interrelation between PBA and LBA. The cluster is configured as 16K
(32 sectors or pages) in the above example. Normally, the cluster can be configured as 1K, 2K, 4K, etc.,
in FAT16 format.
4.4 Logical to Physical Block Format
Figure 4-4. Logical to Physical Block Format
Figure 4-4
shows the logical to physical block format in the Thumb Drive application. The UF32 is working
from the Device Driver down to NAND Flash physical layer.
CIS
Block 1
MBR
PBR, FAT, Dir
Bad Block
003 Cluster
007 Cluster
002 Cluster
010 Cluster
005 Cluster
Block 2
Block 3
Block 4
Block 5
Block 6
Block 7
Block 8
Block 9
Physical Structure (PBA)
MBR
PBR, FAT, Dir
002 Cluster
003 Cluster
004 Cluster
005 Cluster
006 Cluster
007 Cluster
Sector 0–31
Sector 32–63
Sector 64–95
Sector 96–127
Sector 128–159
Sector 160–191
Sector 192–223
Sector 224–225
Logical Structure (LBA)
Application
File Management
Device Driver
NAND Flash
File
LBA
PBA
Thumb Drive Physical Format
Card Information Structure
Zone Boundary Concept
Logical Block Address (LBA)
ECC Area
Thumb Drive Logical Format
Partition Boot Sector
(Sector size, Cluster size, Total Cluster,
etc.)
File System Management (FAT16)
LBA Concept
Master Boot Sector (MBR)
FAT1, FAT2
Root Directory
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參數(shù)描述
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