Datasheet

SAM9261 [DATASHEET]
Atmel-6062O-ATARM-SAM9261-Datasheet_21-Jun-16
630
Consider now color display mode and two pixels p0 and p1 with the horizontal coordinates 4*n+0, and 4*n+1. A
color pixel is composed of three components: {R, G, B}. Pixel p0 will be displayed sending the color components
{R0, G0, B0} to the display. Pixel p1 will be displayed sending the color components {R1, G1, B1}. Suppose that
the data read from memory and mapped to the lookup tables corresponds to shade level 10 for the three color
components of both pixels, with the dithering pattern to apply to all of them being DP2_3 = “1101 1011 0110”.
Table 37-9 shows the output sequence in the data output bus for single scan configurations. (In Dual Scan
Configuration, each panel data bus acts like in the equivalent single scan configuration.)
Table 37-8. Dithering Algorithm for Monochrome Mode
Frame Number Pattern Pixel a Pixel b Pixel c Pixel d
N 1010 ON OFF ON OFF
N+1 0101 OFF ON OFF ON
N+2 1010 ON OFF ON OFF
N+3 0101 OFF ON OFF ON
N+4 1111 ON ON ON ON
N+5 1010 ON OFF ON OFF
N+6 0101 OFF ON OFF ON
N+7 1010 ON OFF ON OFF
... ... ... ... ... ...
Table 37-9. Dithering Algorithm for Color Mode
Frame Signal Shadow Level Bit used Dithering Pattern 4-bit LCDD 8-bit LCDD Output
N red_data_0 1010 3 1101 LCDD[3] LCDD[7] R0
N green_data_0 1010 2 1101 LCDD[2] LCDD[6] G0
N blue_data_0 1010 1 1101 LCDD[1] LCDD[5] b0
N red_data_1 1010 0 1101 LCDD[0] LCDD[4] R1
N green_data_1 1010 3 1101 LCDD[3] LCDD[3] G1
N blue_data_1 1010 2 1101 LCDD[2] LCDD[2] B1
…… … … … … ……
N+1 red_data_0 1010 3 1011 LCDD[3] LCDD[7] R0
N+1 green_data_0 1010 2 1011 LCDD[2] LCDD[6] g0
N+1 blue_data_0 1010 1 1011 LCDD[1] LCDD[5] B0
N+1 red_data_1 1010 0 1011 LCDD[0] LCDD[4] R1
N+1 green_data_1 1010 3 1011 LCDD[3] LCDD[3] G1
N+1 blue_data_1 1010 2 1011 LCDD[2] LCDD[2] b1
…… … … … … ……
N+2 red_data_0 1010 3 0110 LCDD[3] LCDD[7] r0
N+2 green_data_0 1010 2 0110 LCDD[2] LCDD[6] G0
N+2 blue_data_0 1010 1 0110 LCDD[1] LCDD[5] B0
N+2 red_data_1 1010 0 0110 LCDD[0] LCDD[4] r1