UM1620 datasheet(34/41 Pages) STMICROELECTRONICS

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API specification

UM1620

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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 show the formats of lowEnabledBlocks,

midEnabledBlocks and highEnabledBlocks for the C90FL module.

For low address space valid bits are from bit 0 to bit (lowBlockNum – 1). In which,

lowBlockNum is the number of low blocks returned from FlashInit();

For middle address space valid bits are from bit 0 and bit (midBlockNum – 1). In which,

midBlockNum is the number of middle blocks returned from FlashInit();

For high address space valid bits are from bit 0 to bit (highBlockNum – 1). In which,

highBlockNum is the number of high blocks returned from FlashInit();

For example, below are bit allocations for blocks in Low/Mid/High Address Space of

SPC564A70:

Table 53. 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 54. 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 55. 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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