编写veriloghdl模块,能够检出数据流中含有数据(10111)的个数(计数范围1-99)
时间: 2023-06-18 15:08:23 浏览: 54
以下是一个简单的Verilog HDL模块,用于检测数据流中包含10111的个数:
```verilog
module data_counter(
input clk,
input reset,
input data_in,
output reg [6:0] count
);
reg [4:0] state;
reg [4:0] next_state;
parameter IDLE = 3'b000;
parameter START = 3'b001;
parameter FOUND = 3'b010;
parameter ERROR = 3'b011;
always @(posedge clk, negedge reset) begin
if (reset == 0) begin
state <= IDLE;
count <= 0;
end else begin
state <= next_state;
if (next_state == FOUND) begin
count <= count + 1;
end
end
end
always @(*) begin
case (state)
IDLE: begin
if (data_in == 1'b1) begin
next_state = START;
end else begin
next_state = IDLE;
end
end
START: begin
if (data_in == 1'b0) begin
next_state = IDLE;
end else begin
next_state = FOUND;
end
end
FOUND: begin
if (data_in == 1'b1) begin
next_state = FOUND;
end else begin
next_state = ERROR;
end
end
ERROR: begin
if (data_in == 1'b1) begin
next_state = START;
end else begin
next_state = IDLE;
end
end
endcase
end
endmodule
```
这个模块使用有限状态机来检测数据流中包含的10111的个数。它有一个时钟输入,一个复位输入,一个数据输入和一个计数输出。当检测到数据流中包含10111时,计数器会增加。计数器的范围是1到99,因为它是一个7位寄存器。