AM335x LCD interface use nDE or HSYNC

Steve Deschryver

We are using the DE mode synchronisation of our connected LCD but we have seen unstable pictures (a couple of lines moving to the right) in extreme conditions.

Would it help to switch to HSYNC / VSYNC mode ?

Anybody experience with connecting the AM335x by HSYB / VSYNC connections with a LCD ?

over 12 years ago

0 Tyler Berryhill over 12 years ago

TI__Intellectual 1980 points

Steve,

What do you mean by extreme conditions?

The example code available for the GP EVM uses the LCD controller in raster mode with HSYNC/VSYNC synchronizing the data transfers.

-Tyler

0 Steve Deschryver over 12 years ago in reply to Tyler Berryhill

Expert 1115 points

Extreem hot condition example 65°C.

But the last couple af days where very hot and we did's get any reports of this problem any more.

0 Steve Deschryver over 12 years ago in reply to Steve Deschryver

Expert 1115 points

We had a very small cap on de clock line for EMC, but the actual part stuffed on some boards was wrong resulting in a bad signal.

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AM335x LCD interface use nDE or HSYNC