SPRUIE9D May 2017 – May 2024 DRA74P , DRA75P , DRA76P , DRA77P
As shown on Figure 12-2, prior the CSC the video format needs to be converted from YUV422 to YUV444 format. This conversion only applies to the Chroma samples in the color space, and is implemented using a 4-tap Catmull-Rom algorithm using the following equations:
COUT[2*i[ = CIN[i] COUT[2*i+1] = CLIP (9/16*CIN[i] + 9/16*CIN[i+1] – 1/16*CIN[i-1] – 1/16CIN[i+2] + 1)
Edge effects are treated by repeating the first and last pixel per line.