NAND_Flash的驱动程序设计.pdf

NAND Flash NAND Flash K9F2808UOBNAND FlashS3C2410,NAND FlashARM ,UBoot SP3232EC EPF10K20TC144-3 LM4890MM EL2180CS BSO4804 SN74AHCT1G14DCKR CL450-P160 EP1K10TC100-3 IR2110 MRF150 NOR NAND NOR Flash NOR,NAND,,I/O8 16,NANDFlash,, K9F2808UOB,NAND Flash NAND Flash 1 NAND Flash S3C2410NAND FlashS3C2410 CPUNAND Flash NAND FlashNAND Flash,NAND Flash , NAND FlashS3C2410, 1.1 NAND Flash, 1=4 096 1=32;1=528= (512)+OOB(16)16 OOBOut?of?BandNAND Flash 512NAND Flash00h/01h/50h OOBNAND Flash /data/html/2009-6-23/77135.html 18 [2009-10-30 15:26:19] NAND Flash NAND Flash1001 (1) OOB6(517 )FFOOB6OOB3 NAND FlashECC 1.2 NAND Flash 1NAND FlashSW12R/B/ 23nWAIT/S3C2410NAND Flash 2NAND Flash 1 NAND Flash 1.3 NAND Flash(SFR) NAND FlashNAND Flash NFCONFNFCMDNFADDRNFDATANFSTATNFECC /data/html/2009-6-23/77135.html 28 [2009-10-30 15:26:19] NAND Flash 2 NAND FlashS3C2410 2 Flash SDRAMNAND Flash : SDRAMNAND Flash: NAND Flash NAND Flash SDRAMNAND Flash () 2.1 NAND Flash Read ,00H,, ,ECC blockpagebuffer1 0 static int NF_ReadPage(unsigned int block, unsigned int page, unsigned char *buffer){ NF_RSTECC(); /* ECC */ NF_nFCE_L(); /* NAND Flash*/ NF_CMD(0x00); /* A *//* A0~A7() */ NF_ADDR(0); /* A9A16() */ NF_ADDR(blockPage0xff); /* A17A24,() */ NF_ADDR((blockPage8)0xff);/* A25, () */ /data/html/2009-6-23/77135.html 38 [2009-10-30 15:26:19] NAND Flash NF_ADDR((blockPage16)0xff);/* NAND Flash */ ReadPage();/* , 512 */ ReadECC();/* ECC */ ReadOOB();/* OOB *//* NAND Flash */ NF_nFCE_H();/* ECC, */ Return (checkEcc())} 2.2 NAND Flash Program , 00h(A)/01h(B)/05h(C), ; 80h() ; 10h3 3 blockpagebufferNAND Flash 01 /data/html/2009-6-23/77135.html 48 [2009-10-30 15:26:19] NAND Flash static int NF_WritePage(unsigned int block, unsigned int page, unsigned char *buff