SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
The FVH flags are sent with four protection bits to support double error detection, single error correction. A non-correctable detected error is simply ignored. An option exists for the protection bits to correct a single bit error in the FVH flags. The correction table is shown in Table 11-11. n/c means that the error condition is detected, but it is non-correctable.
P3, P2, P1, P0 | F, V, and H Flags | |||||||
---|---|---|---|---|---|---|---|---|
000 | 001 | 010 | 011 | 100 | 101 | 110 | 111 | |
0000 | 000 | 000 | 000 | n/c | 000 | n/c | n/c | 111 |
0001 | 000 | n/c | n/c | 111 | n/c | 111 | 111 | 111 |
0010 | 000 | n/c | n/c | 011 | n/c | 101 | n/c | n/c |
0011 | n/c | n/c | 010 | n/c | 100 | n/c | n/c | 111 |
0100 | 000 | n/c | n/c | 011 | n/c | n/c | 110 | n/c |
0101 | n/c | 001 | n/c | n/c | 100 | n/c | n/c | 111 |
0110 | n/c | 011 | 011 | 011 | 100 | n/c | n/c | 011 |
0111 | 100 | n/c | n/c | 011 | 100 | 100 | 100 | n/c |
1000 | 000 | n/c | n/c | n/c | n/c | 101 | 110 | n/c |
1001 | n/c | 001 | 010 | n/c | n/c | n/c | n/c | 111 |
1010 | n/c | 101 | 010 | n/c | 101 | 101 | n/c | 101 |
1011 | 010 | n/c | 010 | 010 | n/c | 101 | 010 | n/c |
1100 | n/c | 001 | 110 | n/c | 110 | n/c | 110 | 110 |
1101 | 001 | 001 | n/c | 001 | n/c | 001 | 110 | n/c |
1110 | n/c | n/c | n/c | 011 | n/c | 101 | 110 | n/c |
1111 | n/c | 001 | 010 | n/c | 100 | n/c | n/c | n/c |