modelsim仿xfab工艺库的综合后网表文件，提示找不到u_mx2单元

xiajinminyu

modelsim仿真xfab工艺的综合后网表文件，提示的错误是：
# ** Error: (vsim-3033) E:/verilog_design/digital_chip_v2.0/spi_v1.7/verilog_netlist/D_CELLS.v(25630): Instantiation of 'u_mx2' failed. The design unit was not found.
#         Region: /tb_spi_top/full_chip_u/spi_top_u/U1775
#         Searched libraries:
#             E:\verilog_design\digital_chip_v2.0\spi_v1.7\work



D_CELLS.V的25630行是一个MU2IX0单元里面例化的另一个小单元u_mx2：

module MU2IX0 (IN0, IN1, Q, S);

   input     IN0, IN1, S;
   output    Q;

// Function Q: !((!S*IN0)+(S*IN1))
   u_mx2     i5  (n_3, IN0, IN1, S);                         ////////25630行
   not       i4  (Q, n_3);

// timing section:
   specify

      (posedge S => (Q +: Q)) = (0.02, 0.02);
      (negedge S => (Q +: Q)) = (0.02, 0.02);
         if ((IN0 == 1'b0 && IN1 == 1'b1)) (S -=> Q) = (0.02, 0.02);
      (IN0 -=> Q) = (0.02, 0.02);
      (IN1 -=> Q) = (0.02, 0.02);

   endspecify
endmodule


请高手指点，谢谢啦~
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