题解 | #非整数倍数据位宽转换24to128#

`timescale 1ns/1ns

module width_24to128(
	input 				clk 		,   
	input 				rst_n		,
	input				valid_in	,
	input	[23:0]		data_in		,
 
 	output	reg			valid_out	,
	output  reg [127:0]	data_out
);
reg [3:0]count_0_5;
reg [127:0]	data_out1;
always@(posedge clk or negedge rst_n)begin
if(!rst_n)
count_0_5<=0;
else  begin if(count_0_5==15&&valid_in==1)
			    count_0_5<=0;
		 if(valid_in==1)
			   count_0_5<=count_0_5+1;
end
//******************************
end
always@(posedge clk or negedge rst_n)begin
if(!rst_n)
valid_out<=0;
else if(count_0_5==5||count_0_5==10||count_0_5==15)
        valid_out<=1;
		else
        valid_out<=0;
end
reg [127:0]data_out2;
always@(posedge clk or negedge rst_n)
if(!rst_n)begin
data_out1<=0;
data_out<=0;
data_out2<=0;
end
else begin if(count_0_5==5&&valid_in==1)begin
        data_out<={data_out2[119:0],data_in[23:16]}; 
		  data_out1<={data_out2[103:0],data_in};end else     
           if(count_0_5==10&&valid_in==1)begin
        data_out<={data_out2[111:0],data_in[23:8]};
		 data_out1<={data_out2[103:0],data_in};end else        
		if(count_0_5==15&&valid_in==1)begin
        data_out<={data_out2[103:0],data_in};end else        
		if(count_0_5==6&&valid_in==1)begin
        data_out2<={data_out2[87:0],data_out1[15:0],data_in};  end else             
           if(count_0_5==11&&valid_in==1)begin
        data_out2<={data_out2[95:0],data_out1[7:0],data_in};end else        
		 if(valid_in==1)begin
        data_out2<={data_out2[103:0],data_in};end 
	
end
endmodule