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THS8135 Output problem

BH4636
Prodigy 140 points
Other Parts Discussed in Thread: THS8135, OMAP3530

I'm interfacing a ths8135 to an OMAP 3530 in order to create an analog VGA signal.  My image that should look like this

 

Instead looks like this with a black band along the right side.  Seems a little too large to be due to the 8 pixel delay caused by the 8135.

Any ideas would be helpful

  • 0
    TI__Genius 16810 points

    BH,

    It appears that the OMAP3530 is retaining the last active pixel of a line throughout the horizontal blanking, instead of outputting black level.  If this cannot be changed in the OMAP3530, you may need to supply a DE signal from OMAP and connect to the THS8135 /Blank input to force a black or black level during this interval.