S3C24A0A Datasheet, PDF (454/519 Pages) Samsung semiconductor – 32-BIT RISC MICROPROCESSOR

LCD CONTROLLER
S3C24A0A RISC MICROPROCESSOR (Preliminary Spec)
COLOR KEY 1 REGISTER
Register
Address
LCDKEYCON 0X4A000054
R/W
Description
R/W Color key control register
Reset Value
0x00000
LCDKEYCON
KEYEN
DIRCON
COMPKEY
Bit
[25]
[24]
[23:0]
Description
Color Key (Chroma key ) Enable control
0 = Color key disable, blending enable
1 = Color key enable, blending disable
Color key (Chroma key)direction control
0 = If the pixel value match foreground image with COLVAL
according to COMPKEY, pixel from background image is
displayed (only in OSD area)
1 = If the pixel value match background with COLVAL according
to COMPKEY, pixel from foreground image is displayed (only
in OSD area)
Each bit is correspond to the COLVAL[23:0].
If some bit position is set then that bit position of COLVAL and
pixel value will not be compared.
Initial state
0
0
0
COLOR KEY 2 REGISTER
Register
LCDCOLVAL
Address
0X4A000058
R/W
Description
R/W Color key value ( transparent value) register
Reset Value
0x00000000
LCDCOLVAL
COLVAL
Bit
Description
[23:0] Color key value for the transparent pixel effect.
NOTE: COLVAL and COMPKEY use 24-bit data at all BPP mode.
Initial state
0
18 BPP mode: 18-bit color value is valid.
COLVAL 23 22 21 20 19 18 17- 15 14 13 12 11 10 9-8 7 6 5 4 3 2 1-0
16
Data
R5 R4 R3 R2 R1 R0 x G5 G4 G3 G2 G1 G0 x B5 B4 B3 B2 B1 B0 x
x: Don’t care, We recommend that those bits are filled with ‘0’.
COMPKEY 23 22 21 20 19 18 17- 15 14 13 12 11 10 9-8 7 6 5 4 3 2 1-0
16
Data
R5 R4 R3 R2 R1 R0 0x3 G5 G4 G3 G2 G1 G0 0x3 B5 B4 B3 B2 B1 B0 0x3
COMPKEY[17:16], COMPKEY[9: 8] and COMPKEY[1:0] must be 0x3.
28-24
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
Specifications and information herein are subject to change without notice.