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UM0851 Datasheet(PDF) 124 Page - STMicroelectronics |
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UM0851 Datasheet(HTML) 124 Page - STMicroelectronics |
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124 / 245 page  Non-volatile memory device drivers UM0851 124/245 Doc ID 16604 Rev 2 Figure 31. Interface between FSMC and NAND Flash 5.1.2 Software overview The NAND device driver sits on top of the FSMC and provides all the necessary functions for a file system via the standard Linux MTD interface. NAND device driver controls the functionality of FSMC by using the API of FSMC driver. Figure 32. NAND software system architecture Once started, the NAND device driver scans for the available NAND chips and if a chip is found and matches to its list of devices, the device driver configure it. After the initial configuration, the NAND Flash information regarding the NAND Flash is exported to the MTD layer and the Flash is ready to be used by the file system. FSMC AHB NAND Flash AHB Interface Chip Select Data, Address, Control Bus FSMC Wait Ready/Busy NOR driver NAND driver Linux MTD layer YAFFS2 JFFS2 VFS FSMC SMI controller Application User space Kernel space Hardware NAND Flash |
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