Visible to Intel only — GUID: iil1481129682215
Ixiasoft
Visible to Intel only — GUID: iil1481129682215
Ixiasoft
10.4.2. ECC Structure
The ECC is calculated based on a Hamming code for the corresponding data word length.
Data Bus Width | ECC Bits |
---|---|
8 to 15 bits | 5 |
16 to 31 bits | 6 |
32 to 63 bits | 7 |
64 to 127 bits | 8 |
128 to 255 bits | 9 |
256 bits | 10 |
Peripheral Memory |
Data Size |
Memory |
ECC Bits | Data Width + ECC Bits | Hamming Code Word (length in bits) |
Type 16 |
---|---|---|---|---|---|---|
On-chip RAM |
64 x 32768 |
Word-addressable | 8 | 64+7 17 | 72 |
Single port |
USB RAM |
35 x 8192 |
Word-addressable | 7 | 35+7 | 42 |
Single port |
SD/MMC FIFO |
32 x 1024 |
Word-addressable | 7 | 32+7 | 39 |
True dual port |
EMAC Rx FIFO |
35 x 4096 |
Word-addressable | 7 | 35+7 | 42 |
Simple dual port |
EMAC Tx FIFO |
35 x 4096 |
Word-addressable | 7 | 35+7 | 42 |
Simple dual port |
DMA FIFO |
64 x 512 |
Byte-addressable | 5 per byte lane | 64+40 18 | 104 |
Simple dual port |
NAND ECC Buffer |
16 x 768 |
Word-addressable | 6 | 16+6 | 22 |
Simple dual port |
NAND Write FIFO |
32 x 128 |
Word-addressable | 7 | 32+7 | 39 |
Simple dual port |
NAND Read FIFO |
32 x 32 |
Word-addressable | 7 | 32+7 | 39 |
Simple dual port |