Answers Database

ppr Error 9004: The IOPAD must be placed in a dedicated pad location.


Record #2201

Product Family:  Software

Product Line:  FPGA Core

Problem Title:
ppr Error 9004: The IOPAD must be placed in a dedicated pad location.


Problem Description:
Keywords: PPR, PAD, dedicated, location

Urgency: Standard

General Description:

PPR terminates with the error:
Error 9004: The IOPAD <signal_name> must be placed in a dedicated pad location.
 Where <signal_name> is the name of a signal in a design that connects an IPAD o
r IOPAD directly to a BUFGP or BUFGS.


Solution 1:

When a PAD is connected directly to a global buffer the PAD can only be placed i
n a dedicated location.  If this PAD is constrained (LOCed) to a location other
than the dedicated pad then this error will occur.

To locate the PAD to a non-dedicated location, insert an IBUF in front of the BU
FG.

Warning: This will introduce additional routing delay.



End of Record #2201