Combinational circuits-Prbs generator 3bit

3 BIT PRBS GENERATOR
module prbs3bit(q,clk,rst);
output [2:0]q;
input clk,rst;
reg [2:0]q;
always @(posedge clk)
begin
if(rst)
q<=3'b1;
else
q<={q[1:0],q[2]^q[1]};
end
endmodule