UM1627 datasheet(32/38 Pages) STMICROELECTRONICS

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API specification

UM1627

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The inputs lowEnabledBlocks, midEnabledBlocks and highEnabledBlocks are bit-mapped

arguments that are used to select the blocks to be evaluated in the Low/Mid/High address

spaces of main array. The selection of the blocks of the main array is determined by

setting/clearing the corresponding bit in lowEnabledBlocks, midEnabledBlocks or

highEnabledBlocks.

The bit allocations for blocks in one address space are: bit 0 is assigned to block 0, bit 1 to

block 1, etc. The following diagrams give an example of the formats of lowEnabledBlocks,

midEnabledBlocks and highEnabledBlocks for the C90LC module.

Refer to Appendix C: Documentation references for the valid bits configuration depending

from the specific microcontroller Flash module sectors.

If no blocks are enabled the C90FL_ERROR_FMR_NO_BLOCK error code is returned.

Table 54. Troubleshooting for FactoryMarginReadCheck()

Returned error bits

Possible causes

Solution

C90FL_ERROR_FMR_

MISMATCH

The MISR value calculated by the

user is incorrect.

Re-calculate the MISR values using

the correct Data and address.

The MISR calculated by the

Hardware is incorrect.

Hardware Error.

C90FL_ERROR_FMR_

NO_BLOCK

None of the Blocks are enabled for

Factory Margin Read Check

Enable any of the blocks using

variables lowEnabledBlocks,

midEnabledBlocks and

highEnabledBlock.

Table 55. Bit allocation for blocks in low address space

MSB

LSB

bit 31

…

bit 10

bit 9

bit 8

…

bit 1

bit 0

reserved

…

reserved

block 9

block 8

…

block 1

block 0

Table 56. Bit allocation for blocks in middle address space

MSB

LSB

bit 31

…

bit 4

bit 3

bit 2

bit 1

bit 0

reserved

…

reserved

block 1

block 0

Table 57. Bit allocation for blocks in high address space

MSB

LSB

bit 31

…

bit 6

bit 5

bit 4

…

bit 1

bit 0

reserved

…

reserved

block 5

block 4

…

Block 1

Block 0

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