Answers Database
MAP, PAR, PPR: Constraining signals to unbonded pads in M1 and XACT (naming convention is different)
Record #2647
Product Family: Software
Product Line: FPGA Implementation
Product Part: par
Problem Title:
MAP, PAR, PPR: Constraining signals to unbonded pads in M1 and XACT (naming convention is
different)
Problem Description:
Urgency: standard
General Description:
In the XACT tools location constraints for unbonded pads used
the syntax of "Uxx", where "xx" corresponded to the pad
location for the unbonded I/O.
In the M1 tools location constraints for unbonded pads has
been changed to the format "UNBxx".
Solution 1:
To constrain an unbonded pad to a specific location in your
schematic design, add the "LOC=UNBxx" attribute to the UPAD
component on your schematic.
For example to constrain a unbonded pad to pad location 66 do
the following:
LOC=UNB66
In order to constrain an unbonded pad to a specific location
in a user constraint file (.ucf), add the following line to
your UCF file:
NET "NetName" LOC = "UNBxx"
where "NetName" is the name of the net connected to the UPAD.
End of Record #2647 - Last Modified: 08/19/97 16:51 |
