UM1653 datasheet(20/45 Pages) STMICROELECTRONICS

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NAND driver firmware modules

UM1653

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Table 7. NAND_WriteECC

Function name

NAND_WriteECC.

Prototype

uint16_t NAND_WriteECC(uint32_t Memory_Offset,

uint8_t *Writebuff,

uint16_t NumByte)

Behavior description

Writes one sector & copy rest Block during ECC Correctable Error Case.

Input parameter

Memory_Offset: Memory Offset.

Writebuff: Pointer to the data to be written.

Transfer_Length: Number of byte to write.

Output parameter

Status of NAND Write. This parameter can be:

– NAND_OK: when the NAND Write is successful

– NAND_FAIL: when NAND fails to Write

Table 8. NAND_PostWriteECC

Function name

NAND_PostWriteECC.

Prototype

uint16_t NAND_PostWriteECC(void)

Behavior description

Copies whole block after writing corrected page in ECC Correction.

Input parameter

None

Output parameter

Status of NAND Write.

Table 9. NAND_CleanLUT

Function name

NAND_CleanLUT.

Prototype

uint16_t NAND_CleanLUT (uint8_t ZoneNum)

Behavior description

Rebuilds the Look Up Table.

Input parameter

ZoneNbr: Zone Number to Rebuild the Look Up Table.

Output parameter

Status of NAND Build look up table. This parameter can be:

– NAND_OK: when the NAND Clean is successful.

– NAND_FAIL: when NAND fails to clean look up table.

Table 10. NAND_WearLeveling

Function name

NAND_WearLeveling.

Prototype

uint16_t NAND_WearLeveling (uint8_t ZoneNumber)

Behavior description

Builds the Look Up Table According to the Wear Count.

Input parameter

ZoneNumber: Zone Number.

Output parameter

Status of NAND wear Leveling. This parameter can be:

– NAND_OK: when the NAND wear leveling is successful.

– NAND_FAIL: when NAND fails to wear leveling.

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