dpll.v

ＦＰＧＡ实现全数字锁相环

module dpll(//input
              clk,fin,reset,K,
              //output
              fout,fc2);
input clk,fin,reset;
input[3:0] K;
output  fout,fc2;
wire fout,fc2;
wire hidclock,carryinc,borrowdec,nidout,xork;

xorphd dpllxorphd(.fin(fin),
                  .fout(fout),
                  .se(xork));
                  
moKcounter dpllmoKcounter(.clk(clk),
                          .se(xork),
                          .K(K),
                          .reset(reset),
                          .carry(carryinc),
                          .borrow(borrowdec));            
                          
maichongjiajian dpllmaichongjiajian(.IDCLOCK(hidclock),
                                    .INC(carryinc),
                                    .DEC(borrowdec),
                                    .reset(reset),
                                    .IDOUT(nidout));
                                     
 divfrequency64 dplldivfrequency64(.IDOUT(nidout),
                                   .reset(reset),
                                   .fout(fout));                                                                

divfrequency32 dplldivfrequency32(.IDOUT(nidout),
                                  .reset(reset),
                                  .fc2(fc2));                                                                   

divfrequency8  dplldivfrequency8(.clk(clk),
                                 .reset(reset),
                                 .IDCLOCK(hidclock));
                                
endmodule