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[/] [qaz_libs/] [trunk/] [camera_link/] [camera_link_clk.v] - Rev 21

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//
//
//
 
`timescale 10ps/1ps
 
 
module camera_link_clk
(
  input             clk_in,
 
  output reg [3:0]  clk_7x_index,
  output            clk_out_7x,
  output            clock_good,
 
  input             reset
);
 
  // --------------------------------------------------------------------
  //
  clock_mult
    #( .MULT(7) )
    clk_out_7x_i
    (
      .clock_in(clk_in),
      .clock_out(clk_out_7x),
      .clock_good(clock_good),
 
      .reset(reset)
    );
 
 
  // --------------------------------------------------------------------
  //
  wire delayed_clk_in;
 
  assign #1 delayed_clk_in = clk_in;
 
  wire clk_in_rise = (delayed_clk_in == 1'b0) & (clk_in == 1'b1);
 
  always @(posedge clk_out_7x)
    begin
      if(clk_in_rise)
        clk_7x_index <= 5;
      else if( clk_7x_index >= 6 )
        clk_7x_index <= 0;
      else
        clk_7x_index <= clk_7x_index + 1;
    end
 
 
endmodule
 
 
 
 

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