UM1620 datasheet(32/41 Pages) STMICROELECTRONICS

32 / 41 page

API specification

UM1620

32/41

DocID024388 Rev 3

Comments

Depending on the errBits value, a single or double bit faults are simulated. When a Flash

read is done, if the simulated error has not occurred, then the API returns the error code

C90FL_ERROR_ECC_LOGIC.

Assumptions

It assumes that the Flash block is initialized using a ‘FlashInit()’ API.

2.7.3

FactoryMarginReadCheck()

Description

This function checks the Factory Margin reads of the Flash. The user specified margin level

is used for reads and the operation is done on the specified blocks. The MISR values

calculated by the hardware is compared to the values passed by the user, if they are not the

same, then an error code is returned.

Prototype

UINT32 FactoryMarginReadCheck (PSSD_CONFIG pSSDConfig,

UINT32 lowEnabledBlocks,

UINT32 midEnabledBlocks,

UINT32 highEnabledBlocks,

UINT8 marginLevel,

MISR misrValue,

void (*CallBack)(void));

Arguments

Table 50. Troubleshooting for FlashECCLogicCheck()

Returned error bits

Possible causes

Solution

C90FL_ERROR_ECC_LOGIC

The ECC value calculated by

the user is incorrect.

Re-calculate the ECC values

using the correct Data.

Hardware Failure.

Hardware error.

Table 51. Arguments for FactoryMarginReadCheck()

Argument

Description

Range

pSSDConfig

Pointer to the SSD

Configuration Structure.

The values in this structure are chip-dependent.

Please refer to Section 2.3 for more details.

lowEnabledBlocks

To select the array blocks

in low address space for

erasing.

Bit-mapped value. Select the block in the low

address space whose array integrity is to be

evaluated by setting 1 to the appropriate bit of

lowEnabledBlocks. If there is not any block to be

evaluated in the low address space,

lowEnabledBlocks must be set to 0.

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