Samsung S3C2440A - Manual (Page 378)

LCD CONTROLLER S3C2440A RISC MICROPROCESSOR
15-10
MEMORY DATA FORMAT ( STN, BSWP=0 ) (CONTINUED)
In 4-level gray mode, 2 bits of video data correspond to 1 pixel.
In 16-level gray mode, 4 bits of video data correspond to 1 pixel.
In 256 level color mode, 8 bits (3 bits of red, 3 bits of green, and 2 bits of blue) of video data correspond to 1
pixel. The color data format in a byte is as follows:
Bit [ 7:5 ] Bit [ 4:2 ] Bit[1:0]
Red Green Blue
In 4096 level color mode :
Packed 12 BPP Color mode
12 bits (4 bits of red, 4 bits of green, 4 bits of blue) of video data correspond to 1 pixel. The following table shows
color data format in words: (Video data must reside at 3 word boundaries (8 pixel), as follows)
RGB order
DATA [31:28] [27:24] [23:20] [19:16] [15:12] [11:8] [7:4] [3:0]
Word #1 Red( 1) Green(1) Blue( 1) Red( 2) Green( 2) Blue( 2) Red(3) Green(3)
Word #2 Blue(3) Red(4) Green(4) Blue(4) Red(5) Green(5) Blue(5) Red(6)
Word #3 Green(6) Blue(6) Red(7) Green(7) Blue(7) Red(8) Green(8) Blue(8)
Unpacked 12 BPP Color mode
12 bits (4 bits of red, 4 bits of green, 4 bits of blue) of video data correspond to 1 pixel. The following table shows
color data format in words:
RGB order
DATA [31:28] [27:24] [23:20] [19:16] [15:12] [11:8] [7:4] [3:0]
Word #1 - Red( 1) Green(1) Blue( 1) - Red( 2) Green( 2) Blue( 2)
Word #2 - Red( 3) Green(3) Blue( 3) - Red( 4) Green( 4) Blue( 4)
Word #3 - Red( 5) Green(5) Blue( 5) - Red( 6) Green( 6) Blue( 6)