【D触发器】— 时序图

一个非阻塞赋值可以综合成一个D触发器

module test_01
(
input clk,
input rst_n,
input in_01,

output reg out_02
);

always@(posedge clk or negedge rst_n)begin
if(rst_n == 1'b0)
out_02 <= 1'b0;
else
out_02 <= in_01;// 综合成D触发器

end

endmodule 

 测试文件

`timescale 1ns/1ns

module tb_test_01;
reg clk;
reg rst_n;
reg in_01;

wire out_02;

initial begin
clk = 1'b0;
rst_n = 1'b0;
in_01 = 1'b0;
#12;

rst_n = 1'b1;

end

always #16 in_01 = {$random}%2;

initial begin 
$display("in_01 = %d ",in_01);
end

always #10 clk = ~ clk;

test_01 test_01_inst
(
.clk(clk),
.rst_n(rst_n),
.in_01(in_01),

. out_02(out_02)

);

endmodule