vga controller chip
Hello,
i am using XUPV2P board with FMS3818 video chip on it.
i have my VGA controller which outputs 8 bit R,G and B signals, and hsync and vsync signals..
to show this data on CRT monitor, i must first input this data in the video chip.. then, directly to the VGA connector. (hsync and vsync signals will be routed directly to the VGA connector bypassing video chip, as shown on manual schematic)
i will also route my final clock signal to the video chip.
and my question is:what i must put on BLANK pin of the video chip?
according to its datasheet, when BLANK is Low, pixed data are ignored.. so i assume that i must always toggle BLANK - HIGH, right?
next question is:
what i must put on SYNC pin of the video chip?
datasheet says that SYNC =H, activates sync current from Ios for sync-on-green video signals, and SYNC = L, turns off a current source, Ios that is connected to the green D/A converter.
so.. when i have to turn it on or off? or do i always have to toggle it HIGH?
thanks