The LVDS transmitter pre-emphasis (LVDS_PRE_EMPHASIS) feature allows pre-emphasis on the drivers for certain I/O standards. This attribute must be used in conjunction with ENABLE_PRE_EMPHASIS.
The allowed values for the LVDS_PRE_EMPHASIS attribute are:
•LVDS_PRE_EMPHASIS = FALSE (Default)
•LVDS_PRE_EMPHASIS = TRUE (where ENABLE_PRE_EMPHASIS must be set to TRUE)
The LVDS_PRE_EMPHASIS attribute uses the following syntax in the XDC file:
set_property LVDS_PRE_EMPHASIS TRUE|FALSE [get_ports port_name]
A typical pre-emphasis gain when using the LVDS_PRE_EMPHASIS attribute is listed in Table: Typical Pre-Emphasis Gain when Using the LVDS_PRE_EMPHASIS Attribute .