I am a total newbie to LVDS.
I have no idea on how to use LVDS with the XEM3010.
I have tried several examples on the web, only to have all of them fail.
I’m not sure if I am supposed to add something to the constraints file?
I have read about the voltages, but all I am doing at this point is compiling.
Here is just a sample of the errors I am getting.
NET “data_out_P” LOC = “D1” | IOSTANDARD = LVDSEXT_25; #“ybus”
NET “data_out_N” LOC = “D2” | IOSTANDARD = LVDSEXT_25; #“ybus”
port map (
I => data_out,
O => data_out_P,
OB => data_out_N
ERROR:Pack:1107 - Unable to combine the following symbols into a single DIFFM
PAD symbol “data_out_P” (Pad Signal = data_out_P)
BUFINV symbol “U1/OBUFDS” (Output Signal = data_out_P)
Each of the following constraints specifies an illegal physical site for a
component of type DIFFM:
Symbol “data_out_P” (LOC=D1 [Physical Site Type = DIFFS])
The component type is determined by the types of logic and the properties and
configuration of the logic it contains. Please double check that the types of
logic elements and all of their relevant properties and configuration options
are compatible with the physical site type of the constraint.
Please correct the constraints accordingly.