xdc-plugin/tests/io_loc_pairs/cells_xtra.v

module GTPE2_CHANNEL (
    (* iopad_external_pin *)
    output GTPTXN,
    (* iopad_external_pin *)
    output GTPTXP,
    (* iopad_external_pin *)
    input  GTPRXN,
    (* iopad_external_pin *)
    input  GTPRXP
);

endmodule