Safety Manual for MPC5777M, Rev. 1.1
Address decoding coverage
NXP Semiconductors80
These locations are showed in blue in Table 19. The procedure to gather these locations is described below.
Let’s assume multiple locations of the Ah word-line trigger the ECC:
1. Complementary address, i.e. Ac, shall be obtained.
2. 3-to-8 address decoders are consider, i.e. in such example DecB and DecA
3. The user shall consider the complementary of DecA and DecB from the Ac to obtain additional
word-lines to be read (blue word-line in Table 19).
If multiple SEC are detected while reading these additional word-lines, there is a high probability they are
all the result of addressing fault.
Table 19. Additional cells shall be read in case of multiple SBEs in same word-line
DecE
DecC DecB DecA 000 001 010 011 100 101 110 111 Block Description
0001010
001 Complementary address
0 110 101
001 Complementary address
0 001 101
001 Ah : complementary address
1 110 010
001 Ah : victim address (red cell)
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