MPC5604B/C Microcontroller Reference Manual, Rev. 8
674 Freescale Semiconductor
27.5.1.13 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
0123456789101112131415
R
MS[127:112]
W
Reset
0000000000000000
16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31
R
MS[111:96]
W
Reset
0000000000000000
Figure 27-16. CFlash User Multiple Input Signature Register 3 (CFLASH_UMISR3)
Table 27-27. 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.
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