techlibs/coolrunner2/tff_extract.v

   1 module FTCP (C, PRE, CLR, T, Q);
   2         input C, PRE, CLR, T;
   3         output wire Q;
   4
   5         wire xorout;
   6
   7         $_XOR_ xorgate (
   8                 .A(T),
   9                 .B(Q),
  10                 .Y(xorout),
  11         );
  12
  13         $_DFFSR_PPP_ dff (
  14                 .C(C),
  15                 .D(xorout),
  16                 .Q(Q),
  17                 .S(PRE),
  18                 .R(CLR),
  19         );
  20 endmodule
  21
  22 module FTCP_N (C, PRE, CLR, T, Q);
  23         input C, PRE, CLR, T;
  24         output wire Q;
  25
  26         wire xorout;
  27
  28         $_XOR_ xorgate (
  29                 .A(T),
  30                 .B(Q),
  31                 .Y(xorout),
  32         );
  33
  34         $_DFFSR_NPP_ dff (
  35                 .C(C),
  36                 .D(xorout),
  37                 .Q(Q),
  38                 .S(PRE),
  39                 .R(CLR),
  40         );
  41 endmodule