UM1634 datasheet(31/43 Pages) STMICROELECTRONICS

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UM1634

API specification

Return values

Comments

For comments please refer to Section 3.6.2 for details.

Assumptions

It assumes that the flash block is initialized using the FlashInit()’API. User will provide the

correct ssdconfig parameters to the FlashDepletionRecover () as returned by the FlashInit().

3.7

User test mode functions

3.7.1

FlashArrayIntegrityCheck()

Description

This function checks the array integrity of the Flash. The user specified address sequence is

used for array integrity 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 FlashArrayIntegrityCheck (PSSD_CONFIG pSSDConfig,

UINT32 lowEnabledBlocks,

UINT32 midEnabledBlocks,

UINT32 highEnabledBlocks,

UINT8 addrSeq,

MISR misrValue_Bk0,

Table 38. Return values for FlashDepletionRecover()

Return Values

Possible Causes

Solution

C90FL_ERROR_BUSY

Depletion operation cannot

be performed because there

is program/erase sequence

in progress on the flash

module.

Wait until all previous

program/erase operations on

the flash module finish.

Possible cases that erase

cannot start are:

1. erase in progress (MCR-

ERS is high);

2. program in progress (MCR-

PGM is high)

C90FL_ERROR_ EGOOD

Depletion operation failed.

Check if the C90FL module is

available and high voltage is

applied to C90FL. Then try to

do the recovery operation

again.

C90FL_OK

Successful completion.

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