AR# 8259: 2.1i VirtexE PAR - ERROR:Place:1670 - The IOB component <net> has an IO standard of LVDS which must be placed with locate constraints to specific IOB locations that support
AR# 8259
2.1i VirtexE PAR - ERROR:Place:1670 - The IOB component <net> has an IO standard of LVDS which must be placed with locate constraints to specific IOB locations that support
Description
keywords : par, lvds, constraint, 1670
Urgency : standard
General Description : During a par session the following error will occur if you attempt to place and route a design with an LVDS standard without constraining the I/O to a specific site.
ERROR:Place:1670 - The IOB component <comp_name> has an IO standard of LVDS which must be placed with locate constraints to specific IOB locations that support this standard. Refer to the application note for LVDS.
Solution
Location constraints should be assigned using the datasheet for the VirtexE. There is a differential pin pair summary that can be used to choose the right bank and pins to do this at :