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SMC032AF 数据表(PDF) 70 Page - Numonyx B.V |
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SMC032AF 数据表(HTML) 70 Page - Numonyx B.V |
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70 / 82 page ![]() CF-ATA command description SMCxxxAF 70/82 9.22 Wear Level command (F5h) This command is effectively a NOP command and only implemented for backward compatibility. The Sector Count register will always be returned with a 00h indicating Wear Level is not needed. Table 74 defines the Wear Level command byte sequence. 9.23 Write Buffer command (E8h) The Write Buffer command enables the host to overwrite contents of the card’s sector buffer with any data pattern desired. This command has the same protocol as the Write Sector(s) command and transfers 512 bytes. Table 75 defines the Write Buffer command byte sequence. Table 74. Wear Level Bit 7 6 5 432 1 0 Command (7) F5h C/D/H (6) X Drive Flag Cyl High (5) X Cyl Low (4) X Sect Num (3) X Sect Cnt (2) Completion Status Feature (1) X Table 75. Write Buffer Bit 7 6 5432 1 0 Command (7) E8h C/D/H (6) X Drive X Cyl High (5) X Cyl Low (4) X Sect Num (3) X Sect Cnt (2) X Feature (1) X |
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