Samsung S5PC100, User Manual

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DISPLAY CONTROLLER S5PC100 USER’S MANUAL (REV1.0)
9.1-72
6.38 WIN 1 COLOR KEY 1 REGISTER (W1KEYCON1, R/W, ADDRESS = 0XEE00_ 0144)
W1KEYCON1 Bit Description Reset Value
COLVAL [23:0] Color key value for the transparent pixel effect. 0
6.39 WIN2 COLOR KEY 0 REGISTER (W2KEYCON0, R/W, ADDRESS = 0XEE00_ 0148)
W2KEYCON0 Bit Description Reset Value
KEYBLEN_F [26] Color Key (Chroma key ) Enable control
0 = Disables ( blending operation disable )
1 = Blending using ALPHA0_x for non-key area, ALPHA1_x for
key area
0
KEYEN_F [25] Color Key (Chroma key ) Enable control
0 = Disables color key
1 = Enables color key
0
DIRCON [24] Color key (Chroma key)direction control
0 = If the pixel value matches fore-ground image with COLVAL,
pixel from back-ground image is displayed ( only in OSD area)
1 = If the pixel value matches back-ground with COLVAL, pixel
from fore-ground image is displayed ( only in OSD area)
0
COMPKEY [23:0] Each bit corresponds to the COLVAL [23:0].
If some position bit is set then it disables position bit of COLVAL.
0
NOTE: Set BLD_PIX = 1, ALPHA_SEL =0, A_FUNC = 0x2, B_FUNC = 0x3 to use alpha blending using color key
6.40 WIN2 COLOR KEY 1 REGISTER (W2KEYCON1, R/W, ADDRESS = 0XEE00_ 014C)
W2KEYCON1 Bit Description Reset Value
COLVAL [23:0] Color key value for the transparent pixel effect. 0