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SPNU563A–March 2018
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F021 Level 2 Flash Module Controller (L2FMC)
7.4.3 Syndrome Table: Decode to Bit in Error
The syndrome is an 8-bit value that decodes to the bit in error. The bit in error can be a bit among the 64
data bits or a bit among the 8 ECC check bits. A syndrome value of 0000 0000 indicates there is no error.
Any other syndrome combinations not shown in the table are uncorrectable multi-bit error. Errors of three
of more bits may escape detection. The syndrome decoding is shown in Table 7-2.
Table 7-2. Syndrome Table
Data Bit Error Position
6
3
6
2
6
1
6
0
5
9
5
8
5
7
5
6
5
5
5
4
5
3
5
2
5
1
5
0
4
9
4
8
4
7
4
6
4
5
4
4
4
3
4
2
4
1
4
0
3
9
3
8
3
7
3
6
3
5
3
4
3
3
3
2
3
1
3
0
2
9
2
8
2
7
0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1
1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 1 1 1 1
1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1
1 1 0 0 0 0 0 0 1 1 1 1 1 1 0 0 1 1 0 0 0 0 0 0 1 1 1 1 1 1 0 0 1 1 0 0 0
0 0 1 1 1 0 0 0 1 1 1 0 0 0 1 1 0 0 1 1 1 0 0 0 1 1 1 0 0 0 1 1 0 0 1 1 1
1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0
0 0 0 1 0 1 0 1 0 1 0 1 0 1 1 1 0 0 0 1 0 1 0 1 0 1 0 1 0 1 1 1 0 0 0 1 0
1 0 1 1 0 1 0 0 1 1 0 1 0 0 0 1 1 0 1 1 0 1 0 0 1 1 0 1 0 0 0 1 0 1 0 0 1
Data Bit Error Position ECC Error Bit
2
6
2
5
2
4
2
3
2
2
2
1
2
0
1
9
1
8
1
7
1
6
1
5
1
4
1
3
1
2
1
1
1
0
0
9
0
8
0
7
0
6
0
5
0
4
0
3
0
2
0
1
0
0
0
7
0
6
0
5
0
4
0
3
0
2
0
1
0
0
1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 Bit[7]
1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 1 0 0 0 0 0 0 Bit[6]
1 1 1 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 Bit[5]
0 0 0 1 1 1 1 1 1 0 0 1 1 0 0 0 0 0 0 1 1 1 1 1 1 0 0 0 0 0 1 0 0 0 0 Bit[4]
0 0 0 1 1 1 0 0 0 1 1 0 0 1 1 1 0 0 0 1 1 1 0 0 0 1 1 0 0 0 0 1 0 0 0 Bit[3]
1 1 0 1 0 0 1 1 0 0 1 1 0 1 0 0 1 1 0 1 0 0 1 1 0 0 1 0 0 0 0 0 1 0 0 Bit[2]
1 0 1 0 1 0 1 0 1 1 1 0 0 0 1 0 1 0 1 0 1 0 1 0 1 1 1 0 0 0 0 0 0 1 0 Bit1]
0 1 1 0 0 1 0 1 1 1 0 0 1 0 0 1 0 1 1 0 0 1 0 1 1 1 0 0 0 0 0 0 0 0 1 Bit[0]
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