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RM0319 数据表(PDF) 44 Page - STMicroelectronics |
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RM0319 数据表(HTML) 44 Page - STMicroelectronics |
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44 / 368 page  BootROM RM0319 44/368 Doc ID 022640 Rev 3 Figure 11. NAND Flash boot Initialize FSMC controller for NAND Compare ID and fill device descriptor 1) Check in first four blocks of word of spare area on first page. Jump to X 1) Check device id, if it is 8 bit, then proceed initialize and try for 16 bit NAND boot Read device ID code Search X - Loader in NAND Notes: NAND, starting from first block. 2) Before reading block, its sanity is checked by reading 1st It should be 0xFF. (0xFF represents sanity) X - Loader Found YES No USB boot Copy X - Loader to shadow memory Authenticate X - Loader? USB boot - Loader in shadow memory Notes: 2) Else jump back to FSMC Passed Failed |
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