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DS90UB927 frame buffer

Dear Sir 

1. Does DS90UB927 have frame buffer ?? for Hsync or Vsync ??

What's the condition need to disable filter of 0x03[4] (filter register)

2. Due to our scaler connect to DS90UB927 and DS90UB948 to Panel 

The Panel will blink sometimes ,I check the single can't be locked sometimes 

Do you have any idea to debug ??

Thanks