题解 | #占空比50%的奇数分频#
占空比50%的奇数分频
https://www.nowcoder.com/practice/ccfba5e5785f4b3f9d7ac19ab13d6b31
`timescale 1ns/1ns
module odo_div_or
(
input wire rst ,
input wire clk_in,
output wire clk_out7
);
//*************code***********//
reg clk1, clk2;
reg [2:0] cnt;
always @(posedge clk_in or negedge rst) begin
if (!rst) cnt <= 0;
else if(cnt == 'd6) cnt <= 0;
else cnt <= cnt + 1;
end
always @(posedge clk_in or negedge rst) begin
if (!rst) clk1 <= 0;
else if (cnt == 'd3) clk1 = ~clk1;
else if(cnt == 'd6) clk1 = ~clk1;
else clk1 <= clk1;
end
always @(negedge clk_in or negedge rst) begin
if (!rst) clk2 <= 0;
else if (cnt == 'd3) clk2 = ~clk2;
else if(cnt == 'd6) clk2 = ~clk2;
else clk2 <= clk2;
end
assign clk_out7 = clk1 || clk2;
//*************code***********//
endmodule
