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S3C2440X Datasheet(PDF) 77 Page - Samsung semiconductor |
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S3C2440X Datasheet(HTML) 77 Page - Samsung semiconductor |
77 / 429 page ![]() 2003.09.25 Preliminary product information describes products that are in development, for which full characterization data and associated errata are not yet available Specifications and information herein are subject to change without notice. NAND FLASH CONTROLLER S3C2440X RISC MICROPROCESSOR 6-16 MAIN DATA AREA REGISTER Register Address R/W Description Reset Value NFMECCD0 0x4E000014 R/W NAND Flash ECC 1 st and 2nd register for main data read (Note) Refer to ECC MODULE FEATURES in p6-8. 0x00000000 NFMECCD1 0x4E000018 R/W NAND Flash ECC 3 rd 4th register for main data read (Note) Refer to ECC MODULE FEATURES in p6-8. 0x00000000 NFMECCD0 Bit Description Initial State ECCData1_1 [31:24] 2 nd ECC for I/O[15:8] 0x00 ECCData1_0 [23:16] 2 nd ECC for I/O[ 7:0] Note : In Software mode, Read this register when you need to read 2 nd ECC value from NAND flash memory 0x00 ECCData0_1 [15:8] 1 st ECC for I/O[15:8] 0x00 ECCData0_0 [7:0] 1 st ECC for I/O[ 7:0] Note : In Software mode, Read this register when you need to read 1 st ECC value from NAND flash memory. This register has same read function of NFDATA. 0x00 (Note) Only word access is valid. NFMECCD1 Bit Description Initial State ECCData3_1 [31:24] 4 th ECC for I/O[15:8] 0x00 ECCData3_0 [23:16] 4 th ECC for I/O[ 7:0] Note : In Software mode, Read this register when you need to read 4 th ECC value from NAND flash memory 0x00 ECCData2_1 [15:8] 3 rd ECC for I/O[15:8] 0x00 ECCData2_0 [7:0] 3 rd ECC for I/O[ 7:0] Note: In Software mode, Read this register when you need to read 3 rd ECC value from NAND flash memory. This register has same read function of NFDATA. 0x00 (Note) Only word access is valid. Important Note MAIN DATA AREA REGISTER (NFMECCD0/1) does not meet the specification. Next revision chip will meet the specification. Workaround: ECC detection by software |
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