题解 | #非整数倍数据位宽转换8to12#
非整数倍数据位宽转换8to12
https://www.nowcoder.com/practice/11dfedff55fd4c24b7f696bed86190b1
`timescale 1ns/1ns module width_8to12( input clk , input rst_n , input valid_in , input [7:0] data_in , output reg valid_out, output reg [11:0] data_out ); reg [1:0] cnt; always @(posedge clk or negedge rst_n) begin if(!rst_n) begin cnt <= 0; end else if(valid_in) begin if(cnt == 2) begin cnt <= 0; end else begin cnt <= cnt + 1'b1; end end else begin cnt <= cnt; end end always @(posedge clk or negedge rst_n) begin if(!rst_n) begin valid_out <= 0; end else if(valid_in && (cnt == 1 || cnt == 2)) begin valid_out <= 1; end else begin valid_out <= 0; end end reg [7:0] data_lock; always @(posedge clk or negedge rst_n) begin if(!rst_n) begin data_lock <= 0; end else if(valid_in) begin data_lock <= data_in; end else begin data_lock <= data_lock; end end always@(posedge clk or negedge rst_n) begin if(!rst_n) begin data_out <= 0; end else if (valid_in && cnt == 1) begin data_out <= {data_lock,data_in[7:4]}; end else if (valid_in && cnt == 2) begin data_out <= {data_lock[3:0],data_in}; end else begin data_out <= data_out; end end endmodule