38.6.8 Chroma Upsampling Unit

The LCDC supports YCbCr4:2:2 and 4:2:0 frame buffers. In 4:2:2, the chroma components are sampled at half the luma rate. The horizontal resolution is halved.

In 4:2:0, the chroma components are also sampled at half the luma rate, vertically and horizontally.

When these modes are selected, the Unified Scaling Engine is used to resample the chroma component and interpolate the missing components.

Figure 38-4. Vertical Chroma and Luma Locations for Progressive Content, 4:2:0 Encoded Frame

Figure 38-5. Horizontal Chroma and Luma Location for 4:2:2 and 4:2:0 YCbCr Encoded Frame

Figure 38-6. Chroma and Luma Locations for Vertical Scaling, With Interlaced Content