扩频通讯中会用的到伪随机数列 —— m序列

　　　　代码中是5bit原始码

module m_generate ( clock , reset , m_code ); input clock ,reset ; output m_code ; reg [4:0]ori_reg ; //original code always @ (posedge clock) if(!reset) begin ori_reg <= 5'b10000; end else begin ori_reg[4] <= ori_reg[3] ^ ori_reg[0] ; ori_reg[3:0] <= ori_reg[4:1] ; end assign m_code = ori_reg[0] ; endmodule