UM1634 datasheet(37/43 Pages) STMICROELECTRONICS

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UM1634

API specification

Return values

Comments

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 show the formats of lowEnabledBlocks,

midEnabledBlocks and highEnabledBlocks for the C90FL module.

For low address space valid bits are from bit 0 to bit 9; for middle address space valid bits

are bit 0 and bit 1; for high address space valid bits are from bit 0 to bit 5.

Table 47. Return values for FactoryMarginReadCheck()

Return Values

Possible Causes

Solution

C90FL_ERROR_FMR_MISMATC

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_BLOC

None of the Blocks are

enabled for Factory Margin

Read Check

Enable any of the blocks using

variables

lowEnabledBlocks,

midEnabledBlocks and

highEnabledBlock.

C90FL_OK

Successful completion

Table 48. 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 49. 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

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