SPRUJ52C june 2022 – july 2023 AM69 , AM69A , TDA4AH-Q1 , TDA4AP-Q1 , TDA4VH-Q1 , TDA4VP-Q1
The RGB-YUV conversion is a matrix based conversion from 12-bit RGB to 12-bit YUV. The output after conversion is YUV444.
The conversion is carried out using the equation on Figure 6-69.
In this equation, the weights are signed 12 bits (S12Q8) with 8 bit of fraction precision, representing a range of -8 to +7.996. The offsets are signed 13 bits.
Figure 6-70 shows the implementation of the RGB to YUV module. The output after conversion is YUV444, as such it is followed by a chroma downsampling stage where in the Chroma resolution is reduced by half in both the horizontal and vertical direction.