Samsung S3C2451X User Manual page 556

LCD CONTROLLER
4BPP display (Palette)
(BSWP = 0, HWSWP = 0)
D[31:28]
000H P1
004H P9
008H P17
...
(BSWP = 1, HWSWP = 0)
D[31:28]
000H P7
004H P15
008H P23
...
NOTE: The values of frame buffer are index of palette memory.
The MSB value of Palette memory is AEN bit.
AEN : Select Alpha value in Window 1 Alpha Value Register for alpha blending
AEN = 0 : ALPHA0_R/G/B values are applied.
AEN = 1 : ALPHA1_R/G/B values are applied.
Each pixel of LCD panel displays blended color with lower layer window.
Refer to the equation of alpha blending on page 22-22.
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
22-16
Specifications and information herein are subject to change without notice.
D[27:24] D[23:20]
P2 P3
P10 P11
P18 P19
D[27:24] D[23:20]
P8 P5
P16 P13
P24 P21
D[19:16] D[15:12]
P4 P5
P12 P13
P20 P21
D[19:16] D[15:12]
P6 P3
P14 P11
P22 P19
S3C2451X RISC MICROPROCESSOR
D[11:8] D[7:4]
P6 P7
P14 P15
P22 P23
D[11:8] D[7:4]
P4 P1
P12 P9
P20 P17
D[3:0]
P8
P16
P24
D[3:0]
P2
P10
P18