Finally got the engineer model of RK3288, feeling nice at the first sight. Because the development board leaves interfaces only for LCD data cable, I have added a interface board to support dual LVDS output.
As LVDS requires complete reference surface with strict layout, the length error between signal traces in a pair must be less than 30mil and the length error between signal pairs must be less than 100mil. What¡¯s more, the corners should adopt arc or obtuse angel and the impedance requires Z=100ohm¡À10ohm.
With a little help from Firefly team, I managed to figure out the excellent layout. Here¡¯s the outcome. It is a 10.1 inch screen with 1200*1920 dpi.
[size=0.83em] |
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