techlibs/common/adff2dff.v

   1 (* techmap_celltype = "$adff" *)
   2 module adff2dff (CLK, ARST, D, Q);
   3         parameter WIDTH = 1;
   4         parameter CLK_POLARITY = 1;
   5         parameter ARST_POLARITY = 1;
   6         parameter ARST_VALUE = 0;
   7
   8         input CLK, ARST;
   9         (* force_downto *)
  10         input [WIDTH-1:0] D;
  11         (* force_downto *)
  12         output reg [WIDTH-1:0] Q;
  13         (* force_downto *)
  14         reg [WIDTH-1:0] NEXT_Q;
  15
  16         wire [1023:0] _TECHMAP_DO_ = "proc;;";
  17
  18         always @*
  19                 if (ARST == ARST_POLARITY)
  20                         NEXT_Q <= ARST_VALUE;
  21                 else
  22                         NEXT_Q <= D;
  23
  24         if (CLK_POLARITY)
  25                 always @(posedge CLK)
  26                         Q <= NEXT_Q;
  27         else
  28                 always @(negedge CLK)
  29                         Q <= NEXT_Q;
  30 endmodule