This has a controller onboard but I also spotted that it has the ability to be driven from an external controller using an 18 bit digital interface. You can use either the touch screen or non touch screen version. The data seems to be the same.
Unless there is something we are completely missing, the way that the CFAF320240F series is designed, it is not possible to bypass the Solomon controller. It does support a LARGE number of different interfaces though
On further reading, you are correct. What I didn't notice is that it is a digital interface but still accessed via the onboard controller. It was just the fact that it showed a HSYNC and VSYNC and 18 bit input that I got confused!.