0- 7 blue. 6 Set in 16-bit modes. Clear in 15-bit modes. Appear to exist but have no effect in SC11483s. If set two pixel clocks are used to latch the two bytes needed for each pixel.
Low byte is latched first.
If clear the low byte is latched on the rising edge of the pixel clock and the high byte is latched on the falling edge. In SC11486 this bit has no effect. Set in 15 and 24 bit modes.