PRBS7码型.TXT

`include "discipline.h"
`include "constants.h"

module prbs(clk,prbs_out);

input clk;
output prbs_out;
electrical clk,prbs_out;

parameter integer seed=4 from [0:inf);
parameter real vdd=1.8 from (0:inf);
parameter real vhigh=0.6 from (0:inf);
parameter real vlow=0.4 from (0:inf);
parameter real trise=10.0p from (0:inf);
parameter real tfall=10.0p from (0:inf);
parameter real tdel=10.0p from (0:inf);


integer d[0:7];
integer seed_min;
integer i;


analog begin

@(initial_step)begin
if(seed>127)
seed_min=seed%128;
d[7]=(seed_min>pow(2,6))?1:0;
d[6]=(seed_min%pow(2,6))>pow(2,5)?1:0;