分别设计一个同步复位和异步复位的D触发器,要求复位信号reset为低时进行电路的复位操作,为高时进行电路操作,写出其verilog代码,并写出其测试激励
时间: 2024-02-15 19:06:16 浏览: 204
以下是同步复位D触发器的Verilog代码和测试激励:
```verilog
module sync_reset_d_ff(
input clk,
input reset,
input d,
output reg q
);
always @(posedge clk) begin
if (reset == 0) begin
q <= 0;
end else begin
q <= d;
end
end
endmodule
module sync_reset_d_ff_tb;
reg clk;
reg reset;
reg d;
wire q;
sync_reset_d_ff dut(
.clk(clk),
.reset(reset),
.d(d),
.q(q)
);
always #5 clk = ~clk;
initial begin
clk = 0;
reset = 1;
d = 0;
#10 reset = 0;
#10 d = 1;
#10 d = 0;
#10 reset = 1;
#10 reset = 0;
#10 d = 1;
#10 $finish;
end
endmodule
```
以下是异步复位D触发器的Verilog代码和测试激励:
```verilog
module async_reset_d_ff(
input clk,
input reset,
input d,
output reg q
);
always @(posedge clk) begin
if (reset == 1) begin
q <= 0;
end else begin
q <= d;
end
end
endmodule
module async_reset_d_ff_tb;
reg clk;
reg reset;
reg d;
wire q;
async_reset_d_ff dut(
.clk(clk),
.reset(reset),
.d(d),
.q(q)
);
always #5 clk = ~clk;
initial begin
clk = 0;
reset = 0;
d = 0;
#10 reset = 1;
#10 reset = 0;
#10 d = 1;
#10 d = 0;
#10 reset = 1;
#10 reset = 0;
#10 d = 1;
#10 $finish;
end
endmodule
```
测试激励中,同步复位D触发器在reset为低时进行电路的复位操作;异步复位D触发器在reset为高时进行电路的复位操作。
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