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DS90385A

reza vip
Prodigy 70 points


hi

i use ds90c385a for convert lvttl to lvds for panel 1366*768 lg ,i creat pattern mono color sample red green or blue , for example create red pattern I am concerned (R0.......R7) =3.3 steady state high  and

(g0,g1 ,.....g7)=0     (b0....b7)=0   , clock 80 mhz , EN=steady state high  ,VSYNC=steady state high  ,HSYNC=steady state high  ,RES=steady state LOW ,POWERDOWN=steady state high  , but i could not see pattern on lcd   AND LVDS DATA (TX OUT)SIGNAL ON THE OUT PUT i could  see ONLY CLOCK SHIFT TO TXCLOK OUT

please help me BY SEND SHEMATIC CIRCUIT DETAIL PIN CONNECT

TANKS

AZ.MICRO@YAHOO.COM

  • 0
    TI__Expert 7395 points

    Hi Reza,

    In order to drive the lcd display, you need to supply the proper video timing (Vsync, Hsync, DE) according the display’s specifications. The video sync signals cannot be steady state High. In your case, using a 1366x768 the DE pulse should be active every 1366 frames and 768 lines.

    Dac Tran

    SVA APPS