用Verilog设计11011序列检测电路;低电平复位,已知输入序列为:011 101 101 101 010 输出结果为:000 000 100 100 000 RTL文件和tb测试文件
时间: 2024-03-21 15:44:12 浏览: 46
以下是Verilog设计11011序列检测电路的RTL代码:
```verilog
module seq_detector (
input clk, reset,
input data_in,
output reg data_out
);
parameter S0 = 2'b00; // Start
parameter S1 = 2'b01; // 1
parameter S2 = 2'b10; // 11
parameter S3 = 2'b11; // 110
parameter S4 = 2'b100; // 1101
reg [1:0] state;
always @(posedge clk or negedge reset) begin
if (reset == 0) begin
state <= S0;
data_out <= 0;
end else begin
case(state)
S0: if (data_in == 1) state <= S0; else state <= S1;
S1: if (data_in == 1) state <= S2; else state <= S1;
S2: if (data_in == 1) state <= S3; else state <= S1;
S3: if (data_in == 1) state <= S4; else state <= S1;
S4: if (data_in == 1) begin
state <= S0;
data_out <= 1;
end else state <= S1;
endcase
end
end
endmodule
```
以下是对应的测试文件tb的代码:
```verilog
module tb_seq_detector;
reg clk, reset, data_in;
wire data_out;
seq_detector dut (
.clk(clk),
.reset(reset),
.data_in(data_in),
.data_out(data_out)
);
initial begin
clk = 0;
forever #5 clk = ~clk;
end
initial begin
reset = 0;
#10;
reset = 1;
#10;
reset = 0;
end
initial begin
data_in = 0;
#10;
for (int i=0; i<3; i++) begin
data_in = 0;
#10;
data_in = 1;
#10;
data_in = 1;
#10;
data_in = 0;
#10;
data_in = 1;
#10;
end
end
endmodule
```
在这个测试文件中,我们首先将reset信号拉低,然后等待一段时间后将其拉高,以使电路初始化。然后我们将输入数据按照题目所给出的序列输入,最终得到的data_out信号应该与题目所给出的输出序列相同。
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