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Problem using external clock on DI0 with parallel interface LCD

Question asked by Muzammal Ahmed on Dec 3, 2012
Latest reply on Apr 8, 2013 by Karina Valencia Aguilar
Branched to a new discussion


I'm trying to use an external clock on DI0 (DI0_EXT_CLK) for parallel LCD. When I do this, I see the last line on my display flashes bright white. It is always the last line and flashes frequently without fixed timeframe. I do not see this problem when I use internal clock. Has anyone ran into this issue? Is there a way to synchronize IPU clock (HSP_CLK) and DI external clock (DI0_EXT_CLK)? Why don't I see this issue when I use internal clock? Is there something else I need to do besides setting di0_ext_clk bit in ipu_di0_general register?