I am trying to detect VGA_CONN1 & VGA_CONN2 independently. It works for RGBHV(separate syncs), but not for RGsB(sync on green). When I get the STDI interrupt for VGA_CONN2, its always for ch1. I need to detect it on STDI ch2.
I have tried different register settings in the AFE, IO, CP maps with regards to routing the syncs,etc but can not get this to work.
Note that VGA_CONN2 is connected into the recommended SCART VGA inputs. However, as you can tell, we are not doing SCART – just another RGB/VGA.
Can anyone help me with this?
Below is the schematic for the vga input signals to our 7850.