题解 | #时钟切换#
时钟切换
https://www.nowcoder.com/practice/1de5e9bf749244cb8e5908626cc36d36
`timescale 1ns/1ns module huawei6( input wire clk0 , input wire clk1 , input wire rst , input wire sel , output reg clk_out ); //*************code***********// reg sel0, sel1; always@(negedge clk0 or negedge rst) begin if(!rst) begin sel0 <= 1'b0; end else begin sel0 <= (~sel) & (~sel1); end end always@(negedge clk1 or negedge rst) begin if(!rst) begin sel1 <= 1'b0; end else begin sel1 <= sel & (~sel0); end end always@(*) begin clk_out = (sel0 & clk0) | (sel1 & clk1); end //*************code***********// endmodule
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