PS2-Keyboard with Verilog...

Hello,here is one Keyboard for Verilog...

module keyboard (
  input clock,
  input ps2_data,
  input ps2_clk,
  output reg  led_g
);
parameter idle    = 2'b01;
parameter receive = 2'b10;
parameter ready   = 2'b11;
reg   state=idle;
reg  rxtimeout=16'b0000000000000000;
reg  rxregister=11'b11111111111;
reg   datasr=2'b11;
reg   clksr=2'b11;
reg   rxdata;
reg datafetched;
reg rxactive;
reg dataready;
always @(posedge clock ) 
begin 
  if(datafetched==1)
    led_g <=rxdata;
end  
  
always @(posedge clock ) 
begin 
  rxtimeout<=rxtimeout+1;
  datasr <= {datasr,ps2_data};
  clksr  <= {clksr,ps2_clk};
  if(clksr==2'b10)
    rxregister<= {datasr,rxregister};
  case (state) 
    idle: 
    begin
      rxregister <=11'b11111111111;
      rxactive   <=0;
      dataready  <=0;
      rxtimeout  <=16'b0000000000000000;
      if(datasr==0 && clksr==1)
      begin
        state<=receive;
        rxactive<=1;
      end   
    end
    
    receive:
    begin
      if(rxtimeout==50000)
        state<=idle;
      else if(rxregister==0)
      begin
        dataready<=1;
        rxdata<=rxregister;
        state<=ready;
        datafetched<=1;
      end
    end
    
    ready: 
    begin
      if(datafetched==1)
      begin
        state     <=idle;
        dataready <=0;
        rxactive  <=0;
      end  
    end  
  endcase
end 
endmodule