|
发表于 2021-3-10 11:00:08
|
显示全部楼层
参考程序,楼主可以试一下,主要是要用电流源和for循环结合。
// Verilog-A for osc
`include "constants.vams"
`include "disciplines.vams"
module osc(en,in,out);
input en , in ;
output out ;
electrical en , in , out ;
parameter real period = 667n from (0:inf) ;
parameter real ref1 = 2.4 from (0:inf) ;
parameter real ref2 = 1.5 from (0:inf) ;
integer x ;
real y ;
analog begin
if (V(in) < ref1) begin
x = -1 ;
end
else begin
if(V(en) < ref2) begin
x = -1 ;
end
else begin
@(initial_step) x = 1 ;
@(timer(0, period)) begin
x = 1 ;
end
@(timer(period/2,period)) begin
x = -1 ;
end
end
end
y = (x>0) ? V(in) : 0 ;
V(out) <+ transition(y, 0, 2n, 2n) ;
end
endmodule
|
|