PXS20RM Datasheet, PDF (577/1368 Pages) Freescale Semiconductor, Inc – PXS20 Microcontroller

Flash Memory
Table 23-11. UT0 Field Descriptions (continued)
Field
1
AIE
0
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.
23.1.6.10 User Test 1 Register
The User Test 1 Register (UT1) provides added controlability to UTest.
The following field and bit descriptions fully define the UT1 register.
Offset 0x0040
Access: User read/write
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
R
DAI
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
R
DAI
W
Reset 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Figure 23-11. UT1 Register
UT1 register functions, as shown in Table 23-12.
Table 23-12. UT1 Field Descriptions
Field
Description
31-0 Data Array Input. These bits enable checks of ECC logic by allowing data bits to be input into the ECC
DAI[31:0] logic and then read out by doing array reads or array integrity checks. The DAI[31:0] correspond to the
32 Array bits representing Word 0 of the double word selected in the ADR register.
23.1.6.11 User Test 2 Register
The following field and bit descriptions fully define the UT2 register.
Freescale Semiconductor
PXS20 Microcontroller Reference Manual, Rev. 1
23-27