led driver design monochrome

I led the company needed a deSign monochrome driver specific requirements are as follows: color changes in the program, consider the following: 1.16X16 point, monochromatic, that is 256 light; 2.1 / 2 or 1 / 4 scan; 3 LED drive separation, light board and driver board or a cable connection between the lamp-drive-one; 4 substrate size: 50X50MM; Please draw the schematic, and then consider the plate map.