Display Control Unit (DCU)
MPC5606S Microcontroller Reference Manual, Rev. 7
Freescale Semiconductor 409
Figure 12-58. Example of layer placement with no blending
Figure 12-59 shows the same layer configuration except that, in this case, the layers have been made 50%
transparent and the depth of the pixel blend is set to 3. The pixels in layer 0 are now blended with pixels
in the underlying layers. In particular, note region A where layer 0 is blended with layer 4 and the
background color. This blending effect is repeated across all of the layers; however, note the pixels in
region B. In this region the pixels from layer 0 are blended with those on layer 1 and layer 2; however, the
pixels from layer 4 and the background color are not included in this blend. This is because the DCU is
configured to blend three layers only, and so the blend setting for layer 2 is ignored for those pixels in
region B.
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