SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
The 2D-LSC prefetch memory is equal to 2 × 1536 × 32 bits. This memory is sized to fetch three lines of 8-bit gain and 8-bit offset × four color components per paxel. Given an image sensor of horizontal resolution H, there are floor [(H / ISIF_2DLSCCFG[14:12] GAIN_MODE_M) + 1] paxels per line, where M is the horizontal LSC paxel size.
Table 9-212 shows the LSC horizontal paxel size, which can be supported for different image sensor resolutions. When M = 8, some resolutions cannot be supported on the fly (orange-shaded cells in the table); the way to process such large images is to use vertical frame division.
MPix | Aspect Ratio | Line Size | Horizontal LSC Paxel Size: M = 2[ISIF_2DLSCCFG[14:12] GAIN_MODE_M] | |||||
---|---|---|---|---|---|---|---|---|
8 | 16 | 32 | 64 | 128 | ||||
Maximum | – | – | 5376 | 2019 | 1011 | 507 | 255 | 129 |
16 | 16 | 9 | 5333 | 2003 | 1003 | 503 | 253 | 128 |
16 | 4 | 3 | 4619 | 1735 | 869 | 436 | 220 | 111 |
16 | 3 | 2 | 4899 | 1840 | 922 | 462 | 233 | 118 |
12 | 16 | 9 | 4619 | 1735 | 869 | 436 | 220 | 111 |
12 | 4 | 3 | 4000 | 1503 | 753 | 378 | 191 | 97 |
12 | 3 | 2 | 4243 | 1594 | 798 | 401 | 202 | 102 |
10 | 16 | 9 | 4216 | 1584 | 794 | 398 | 201 | 102 |
10 | 4 | 3 | 3651 | 1372 | 688 | 345 | 174 | 89 |
10 | 3 | 2 | 3873 | 1455 | 729 | 366 | 185 | 94 |
8 | 16 | 9 | 3771 | 1417 | 710 | 357 | 180 | 91 |
8 | 4 | 3 | 3266 | 1228 | 615 | 309 | 156 | 80 |
8 | 3 | 2 | 3464 | 1302 | 653 | 328 | 165 | 84 |