UM1635 datasheet(29/42 Pages) STMICROELECTRONICS

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UM1635

API specification

Troubleshooting

Comments

Refer to this section of FlashErase() function.

Assumptions

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

correct ssdConfig parameters to FlashDepletionRecover() as returned by FlashInit().

2.7

User test mode functions

2.7.1

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,

BOOL addrSeq,

MISR misrValue,

void (*CallBack)(void));

Table 44. Troubleshooting for FlashDepletionRecover ()

Error codes

Possible causes

Solution

C90FL_ERROR_BUSY

New erase 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:

erase in progress (FLASH_MCR-ERS is high);

program in progress (FLASH_MCR-PGM is

high);

C90FL_ERROR_ EGOOD

Depletion recovery failed.

Check if the C90FL2 is available and high

voltage is applied to C90FL2. Then try to do the

recovery operation again.

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