I used ADV7180 + ADV7391 for DVR application. When I connected NTSC camera CVBS input and ADV7391 CVBS output with SFL mode, the display is ok.
I found PAL camera CVBS input and ADV7391 CVBS output with SFL mode, the monitor display is Black/White without color.
I had tried to inverter ADV7180 SFL signal during SFL mode, but it is not any help.
Finially, when I disable ADV7391 SFL function, the output is normal with color.
May I know what's going on SFL function with PAL signal input?
ADV7180 and ADV7391 initial setting as attached and below.42 00 00 ; INSEL = CVBS in on AIn 1
42 04 57 ; Enable SFL
42 17 41 ; select SH1
42 31 02 ; Clears NEWAV_MODE, SAV/EAV to suit ADV video encoders
42 3D A2 ; MWE Enable Manual Window, Colour Kill Threshold to 2
42 3E 6A ; BLM optimisation
42 3F A0 ; BGB
42 0E 80 ; ADI Recommended Write
42 55 81 ; ADI Recommended Write
42 0E 00 ; ADI Recommended Write