题解 | #整数倍数据位宽转换8to16#
整数倍数据位宽转换8to16
https://www.nowcoder.com/practice/f1fb03cb0baf46ada2969806114bce5e
`timescale 1ns/1ns
module width_8to16(
input clk ,
input rst_n ,
input valid_in ,
input [7:0] data_in ,
output reg valid_out,
output reg [15:0] data_out
);
reg [15:0] data_out_temp;
reg [1:0] data_in_cnt;
always@(posedge clk or negedge rst_n)
begin
if(!rst_n)
data_in_cnt <= 2'b0;
else if(valid_in)
begin
if(data_in_cnt == 2'd1)
data_in_cnt <= 2'b0;
else
data_in_cnt <= data_in_cnt + 1'b1;
end
else
data_in_cnt <= data_in_cnt;
end
always@(posedge clk or negedge rst_n)
begin
if(!rst_n)
data_out_temp <= 16'b0;
else if(valid_in)
data_out_temp <= {data_out_temp[7:0] , data_in};
else
data_out_temp <= data_out_temp;
end
always@(posedge clk or negedge rst_n)
begin
if(!rst_n)
begin
data_out <= 16'b0;
valid_out <= 1'b0;
end
else if(valid_in) //以后此处还是要加上这个判断，不然还是会报错，他会在非有效段进行下面的运算，从而导致出错
begin
if(data_in_cnt == 2'd1)
begin
data_out <= {data_out_temp[7:0] , data_in};
valid_out <= 1'b1;
end
else
begin
data_out <= data_out;
valid_out <= 1'b0;
end
end
else
begin
data_out <= data_out;
valid_out <= 1'b0;
end
end
endmodule
