SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
The ISIF accepts 4:2:2 sampled YCbCr input data. The Luma and color difference signals are 8 bits each, scaled 0 to 255. The color difference signals are multiplexed into one 8-bit bus beginning with a Cb sample. The Y and CbCr buses can be input parallel (16-bit mode) or time-multiplexed and input as a single bus (8-bit mode).
The 16- or 8-bit YCbCr data is stored in SDRAM as 4:2:2 format. Table 9-216 lists the data format in SDRAM. Y data typically has a range of 16 to 235; however, it is possible to subtract a DC value from the Y signal.
| Memory Address | Upper Word | Lower Word | ||
|---|---|---|---|---|
| MSB(31) | LSB(16) | MSB(15) | LSB(0) | |
| N | Y1 | Cr0 | Y0 | Cb0 |
| N + 1 | Y3 | Cr1 | Y2 | Cb1 |
| N + 2 | Y5 | Cr2 | Y4 | Cb2 |