SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
YUV streams are separated into a planar Luma buffer, a planar Chroma Pair (CbCr) buffer, and a planar Vertical Ancillary Data buffer. RGB streams, on the other hand, are stored in a packed R-G-B format, as shown in Figure 11-46.
The BT.1120 standard defines a method of carrying RGB streams. After the SAV code, 8 bits of R, 8 bits of G, and 8 bits of B data are clocked in one cycle. A 24 bit data bus is required. The channel in which to search for the embedded sync codes and the FVH control code is determined by a configuration selection. Only vertical ancillary data from one channel (R, G, or B), which happens to be the channel where control codes are found, are captured. Vertical ancillary data in the other two channels are ignored.
Figure 11-46 RGB Frame Storage