UM1620 datasheet(10/41 Pages) STMICROELECTRONICS

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API specification

UM1620

10/41

DocID024388 Rev 3

2.6

Normal mode functions

2.6.1

FlashInit()

Description

This function reads the Flash configuration information from the Flash control registers and

initialize parameters in SSD configuration structure. ‘FlashInit()’ must be called prior to any

other Flash operations.

Prototype

UINT32 FlashInit (PSSD_CONFIG pSSDConfig);

Arguments

Return values

Troubleshooting

None.

Comments

‘FlashInit()’ checks the C90FL_MCR_RWE and C90FL_MCR_EER bit, and clear them

when any of them is set. If RWE bit is set, Flash program/erase operations can still be

performed.

Assumptions

The user must correctly initialize the fields including c90flRegBase, mainArrayBase,

shadowRowBase, shadowRowSize, pageSize and BDMEnable before passing the structure

to the FlashInit() functions

Table 4. Arguments for FlashInit()

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.

Table 5. Return values for FlashInit()

Type

Description

Possible values

UINT32

Indicates either success or failure type. It is a bit

mapped return code so that more than one condition

can be returned with a single return code. Each bit in

the returned value, except for C90FL_OK, indicates a

kind of current status of C90FL module.

C90FL_OK

C90FL_INFO_EER

C90FL_INFO_RWE

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