Samsung S3C2451X User Manual page 580

LCD CONTROLLER
Window 1 Position Control A Register
Register
VIDOSD1A 0x4C800034
VIDOSD1A
OSD_LeftTopX_F
OSD_LeftTopY_F
Window 1 Position Control B Register
Register
VIDOSD1B 0x4C800038
VIDOSD1B
OSD_RightBotX_F
OSD_RightBotY_F
NOTE: Registers must have word boundary X position.
So, 24bpp mode should have X position by 1 pixel. ( ex, X = 0,1,2,3....)
16bpp mode should have X position by 2 pixel. ( ex, X = 0,2,4,6....)
8bpp mode should have X position by 4 pixel. ( ex, X = 0,4,8,12....)
Window 1 Alpha Value Register
Register
VIDOSD1C 0x4C80003C
ALPHAVAL
Reserved [31:24]
ALPHA0_R [23:20]
ALPHA0_G [19:16]
ALPHA0_B [15:12]
ALPHA1_R [11:8]
ALPHA1_G
ALPHA1_B
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
22-40
Specifications and information herein are subject to change without notice.
Address R/W
R/W Video Window 1's position control 2 register
Bit
[21:11] Horizontal screen coordinate for left top pixel of OSD image
[10:0] Vertical screen coordinate for left top pixel of OSD image
Address R/W
R/W Video Window 1's position control register
Bit
[21:11] Horizontal screen coordinate for right bottom pixel of OSD
image
[10:0] Vertical screen coordinate for right bottom pixel of OSD image
Address R/W
R/W Video Window 1's alpha value register
Bit
Reserved
Red Alpha0 value
Green Alpha0 value
Blue Alpha0 value
Red Alpha1 value
[7:4] Green Alpha1 value
[3:0] Blue Alpha1 value
S3C2451X RISC MICROPROCESSOR
Description
Description
Description
Description
Description
Description
Reset Value
0x0000_0000
initial state
0
0
Reset Value
0x0000_0000
Initial state
0
0
Reset Value
0x0000_0000
Initial state
0
0
0
0
0
0
0