异步复位,同步释放
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module reset_best(clk,asyn_reset,syn_reset);
input clk;
input asyn_reset;
output syn_reset;
reg rst_s1;
reg rst_s2;
[email protected](posedge clk or negedge asyn_reset)
begin
if(!asyn_reset) begin
rst_s1<=1'b0;
rst_s2<=1'b0;
end
else begin
rst_s1<=1'b1;
rst_s2<=rst_s1;
end
end
assign syn_reset=rst_s2;
endmodule