NXP Semiconductors MPC5605BK, Reference Manual

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Chapter 30 Flash Memory
MPC5606BK Microcontroller Reference Manual, Rev. 2
828 Freescale Semiconductor
30.5.1.15 CFlash User Multiple Input Signature Register 4 (CFLASH_UMISR4)
The CFLASH_UMISR4 provides a mean to evaluate the array integrity.
The CFLASH_UMISR4 represents the ECC bits of the whole 144 bits word (2 double words including
ECC): bits 8:15 are ECC bits for the odd double word, and bits 24:31 are the ECC bits for the even double
word; bits 4:5 and 20:21 of MISR are respectively the double and single ECC error detection for odd and
even double word.
The CFLASH_UMISR4 is not accessible whenever CFLASH_MCR[DONE] or CFLASH_UT0[AID] are
low: reading returns indeterminate data while writing has no effect.
Offset: 0x00054 Access: Read/write
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
R
MS[127:112]
W
Reset
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
R
MS[111:96]
W
Reset
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Figure 30-19. CFlash User Multiple Input Signature Register 3 (CFLASH_UMISR3)
Table 30-30. CFLASH_UMISR3 field descriptions
Field Description
MS[127:96] Multiple Input Signature, bits127–96
These bits represent the MISR value obtained accumulating the bits 127:96 of all the pages
read from the flash memory.
The MS can be seeded to any value by writing the CFLASH_UMISR3.