Hi,
I've nearly expected the answer, as the datasheet didn't mention VGA/XGA at all.
We planed to input RGB 4:4:4 Data and disable all color space conversions and internal timing functionalities. As we would only support VGA/XGA at 60Hz, we assumed to work within the specification of the ADV7343. HSYNC and VSYNC could be generated directly by the FPGA
--> What are the functional restrictions of the ADV7343 for VGA/XGA?
As we need to support CPAL / RGB PAL and VGA/XGA, the additional ADV7123 will cost as too much Pins at the FPGA.