Ycbcr Color (16 Bits/Pixel); Alpha Factor (8 Bits/Pixel); Layer Dependence - Fujitsu MB86R02 Jade-D Hardware Manual

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MB86R02 'Jade-D' Hardware Manual V1.64

Refer to the descriptions of the indivdual layer extended color modes for information on how to select

RBGA modes (e.g. bitfield L0EC in register L0EM).

In ARGB format, whether A = 0 or A ≠ 0 (whether blend enabled or disabled) is determined using an 8-

bit integer value.

YCbCr Color (16 bits/pixel)

Image data of "YcbCr = 4:2:2" format. This image data is displayed after being converted by the

calculation circuit to the image data where each of RGB is 8 bits. 2 pixels, each being RGB 24 bits,

are expressed by 32 bits. As a result, the image data can be processed as 16 bits/pixel.

The factor for display blend is held. When the value is t, t/256 is expressed as a binary fraction. During

display blend, the following calculation is performed for each color element of each pixel:

c' = c0×t/256 + c1× (1-t/256)

The display colors for each layer are shown below.

Compatibility mode

Direct color (16, 24), Indirect color (P0)

Direct color (16, 24), Indirect color (P1), YCbCr

Direct color (16, 24), Indirect color (P1)

"Pn" stands for the corresponding palette RAM. Four palettes are used as follows:

1) Palette 0 (P0)

This palette corresponds to the C-layer palette for previous products. This palette is used for the L0

layer. This palette can also be used for the cursor.

2) Palette 1 (P1)

This palette corresponds to the M/B layer palette for previous products. In the compatibility mode,

this palette is common to layers L1 to 5. In the extended mode, this palette is dedicated to the L1

3) Palette 2 (P2)

This palette is dedicated to the L2 layer. This palette can be used only for the extended mode.

4) Palette 3 (P3)

This palette is dedicated to the L3 layer. This palette can be used only for the extended mode.

Extended mode

Direct color (16, 24), Indirect color (P0)

Direct color (16, 24), Indirect color (P1), YCbCr

Direct color (16, 24), Indirect color (P2)

Direct color (16, 24), Indirect color (P3)

Direct color (16, 24)