Hi team,
Customer used UH927 pared with UB926, using internal clk internal timming pattern generation. and found that:
1. pattern is generated by UH927 with timming A, there is no display in the panel;
2. pattern is generated by UB926 with the same timming A, there is normal display;
3. pattern is generated by UH927 with timing B, there is normal display.
4. pattern is generated by UB926 with timming B, there is normal display.
For timming A, Hsync=Vsync=1, HBP=79, VBP=19, HFP=80, VFP=4
For timming B, Hsync=32, Vsync=10, HBP=80, VBP=6, HFP=48, VFP=3
The issue in case#1 may be caused by invalid timming, but with the same timming in case#2, it can work. My question is whether UH927 would change the timming slightly in operation?
thanks!