PXR40RM Datasheet, PDF (378/1434 Pages) Freescale Semiconductor, Inc – PXR40 Microcontroller

Flash Memory Array and Control
Table 12-15. FLASH_x_UT0 Field Descriptions (continued)
Field
30
AIE
31
AID
Description
Array Integrity Enable. AIE set to one starts the array integrity check done on all selected and unlocked blocks.
The address sequence selected is determined by AIS, and the MISR (UM0 through UM4) can be checked after
the operation is complete, to determine if a correct signature is obtained. Once an Array Integrity operation is
requested (AIE = 1), it may be terminated by clearing AIE if the operation has finished (AID = 1) or aborted by
clearing AIE if the operation is ongoing (AID = 0). AIE is not simultaneously writable to a 1 as UTI is being cleared
to a 0.
0 Array integrity checks are not enabled.
1 Array integrity checks are enabled.
Array Integrity Done. AID is cleared upon an Array integrity check being enabled (to signify the operation is
ongoing). Once completed, AID is set to indicate that the array integrity check is complete. At this time the MISR
(UMR registers) can be checked. AID can not be written, and is status only.
0 Array integrity check is ongoing.
1 Array integrity check is done.
12-26
PXR40 Microcontroller Reference Manual, Rev. 1
Freescale Semiconductor