I would like to share 1 problem I met with STDI and any comments or suggestion is welcomed.
Attached 2 files are H sync signal of resolution 1920x1200 60Hz from 2 different sources.
The only difference of STDI readback values is LCVS where 1 is 3 and the other 1 is 6.
As know, it should be 6 for CVT.
I also measure V sync, both sources have same period and sync width.
I wonder how STDI check the pulse width of sync, at 30%, 50% or 80%..