clk_gen.v

AV视频信号输入后

module clk_gen(
	clkin,
	rst,
	
	clkout
	);

input	clkin;
input	rst;

output	clkout;

wire	clkout;

reg	[1:0]	count;

always @ (posedge clkin or negedge rst)
if(!rst) begin
	count <= 0;
	end
else
	count <= count + 1;
assign clkout=count[0];
endmodule