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TVP7002: Why are we using the TVP7002 to capture PC graphics that are blinking?

Part Number: TVP7002
Other Parts Discussed in Thread: THS8200,

HI :

  We are using the TVP7002 chip to receive a VGA input signal with a resolution of 1600*1200; When PC graphics is a pure white pixels (R[9:2]=0xff, G[9:2]=0xff, B[9:2]=0xff) picture, the RGB data collected by TVP7002 is normal; But when PC graphics is odd white (R[9:2]=0xff, G[9:2]=0xff, B[9:2]=0xff) pixels and even black pixels (R[9:2]=0x00, G[ 9:2]=0x00, B[9:2]=0x00) alternately appear,The odd pixel R[9:2]=0xea, G[9:2]=0xef, B[9:2]=0xdf collected by TVP7002, and the even pixel points R[9:2]=0x15,G [9:2]=0x21, B[9:2]=0x24 collected by TVP7002, and the pixel values collected each time are not fixed, this phenomenon is not normal; The image flickers due to too much error in the pixel values collected each time. We configure the TVP7002 register according to the recommended configuration file tvp7002_THS8200_VGA_YPbPr_settings .xls of TI's official website. We adjusted H-PLL Phase Select Reg04, Blue Fine Gain Reg08, Green Fine Gain Reg09, Red Fine Gain Reg0a, Blue Fine Offset MSBs Reg0b, Green Fine Offset MSBs Reg0c, Red Fine Offset MSBs Reg0d, but none of them solved this problem. How do we solve this problem? Thank you!Best regards!