Answers Database PPR Error 5802: PGA package pin location "Uxx" assumed to be unbonded Record #651 Product Family: Software Product Line: XACT FPGA Product Part: ppr Problem Title: PPR Error 5802: PGA package pin location "Uxx" assumed to be unbonded Problem Description:       PPR issues Error 5802 on a valid PGA package       pin location name starting with a "U"       PPR ERROR 5802:           "The [inst] is using an unbonded location '[pin]'.           PADs and the associated iob logic of a PAD can only         go in bonded locations." Solution 1: PPR issues Error 5802 on a valid PGA package pin location labeled "Uxx". CAUSE:       Uxx is a valid bonded pin location in some of the       larger PGA packages.       PPR assumes that the first location       named "Uxx" that it finds in the netlist is a bonded       location, and sometimes this assumption is incorrect.       (xx is any integer value)                  SOLUTION:       The workaround is to reference the pin using the PAD###       notation. To find the corresponding PAD number for       a particular bonded pin called Uxx, look for Uxx in the       appropriate .pkg file in $XACT/data.                  For example, in the 4025pg223 package, pin U8       corresponds to PAD92, based on the package file,       4025g223.pkg:            .            .            pin PAD92 U8                   ^^            pin PAD93 V8            pin PAD94 V9            pin PAD95 U9            pin PAD96 T9       Therefore to constrain a pin to location U8, add the       constraint, LOC=PAD92. This problem may be seen in 4025 and 5200 designs which target PGA packages. The problem is not see n in the 4013 because there are no unbonded pads in that PG223 package. End of Record #651 - Last Modified: 10/14/96 17:22

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