µ±Ç°Î»ÖãºÊ×Ò³ > »ª¿ÆÊýµçʵÑéµÚÈý´Î±¨¸æ
¡¶Êý×Öµç·ÓëÂß¼Éè¼Æ¡·ÊµÑ鱨¸æ
ѧÉúÐÕÃû£º ѧºÅ£º ËùÔڰ༶£º 3. ʱÐòÂß¼µç·µÄ´«ÊäÉè¼Æ·½°¸
[ÒªÇ󣺸ø³öÏêϸµÄÉè¼Æ¹ý³Ì£¬°üÀ¨Ô´³ÌÐò¡¢·ÂÕæ³ÌÐò¡¢Òý½ÅÔ¼Êø£¨°ó¶¨£©´ú ÂëºÍ×¢Ê͵ȣ¬¿ÉÐøÒ³]
£¨a£©CLK µÄÖÜÆÚΪ 35ns ʱµÄÉè¼Æ·½°¸
i.Ô´³ÌÐò module transport(in,clk,out);
module D1(clk,d,q);
module D2(clk,d,q);
input in,clk; output out;
D1 d1(clk,in,q); not #12 N(in_,q); //not N2(in_,in1); D2 d2(clk,in_,out); endmodule
input clk,d; output q; reg q;
always@(posedge clk)
begin end
//$display(\#18 q<=d;
endmodule
input clk,d; output q; reg q;
always@(posedge clk) initial
µÚ[
]Ò³ ¹²[
]Ò³
begin end
//$display(\ q<=d;
¡¶Êý×Öµç·ÓëÂß¼Éè¼Æ¡·ÊµÑ鱨¸æ
ѧÉúÐÕÃû£º ѧºÅ£º ËùÔڰ༶£º
begin end endmodule
q<=0;
ii.·ÂÕæ³ÌÐò
module test;
// Inputs reg in; reg clk; // Outputs wire out;
parameter PARIOD=35;
// Instantiate the Unit Under Test (UUT) transport uut ( );
always begin end
always begin end initial begin
// Initialize Inputs in=0; clk=1;
µÚ[
]Ò³ ¹²[
]Ò³
.in(in), .clk(clk), .out(out)
#(PARIOD/2)clk=~clk; //#(PARIOD/2)clk=~clk;
#PARIOD #(PARIOD/2); #PARIOD #3
in=~in;
¡¶Êý×Öµç·ÓëÂß¼Éè¼Æ¡·ÊµÑ鱨¸æ
ѧÉúÐÕÃû£º end endmodule
//clk = 0;
// Wait 100 ns for global reset to finish // Add stimulus here
ѧºÅ£º ËùÔڰ༶£º
iii.¹Ü½ÅÔ¼Êø
NET \
TIMESPEC TS_clk = PERIOD \
# PlanAhead Generated physical constraints NET \NET \NET \
# PlanAhead Generated IO constraints NET \
µÚ[ ]Ò³ ¹²[ ]Ò³
¡¶Êý×Öµç·ÓëÂß¼Éè¼Æ¡·ÊµÑ鱨¸æ
ѧÉúÐÕÃû£º ѧºÅ£º ËùÔڰ༶£º £¨b£©CLK µÄÖÜÆÚΪ 25ns µÄÉè¼Æ·½°¸
µç·Դ´úÂëÈçÉÏ£¬²âÊÔ´úÂëÈçÏ£º module test;
// Inputs reg in; reg clk; // Outputs wire out;
parameter PARIOD=25;
// Instantiate the Unit Under Test (UUT) transport uut ( );
always begin end
always begin end initial begin
// Initialize Inputs in=0;
µÚ[
]Ò³ ¹²[
]Ò³
.in(in), .clk(clk), .out(out)
#(PARIOD/2)clk=~clk; //#(PARIOD/2)clk=~clk;
#PARIOD #(PARIOD/2); #PARIOD #3
in=~in;
¹²·ÖÏí92ƪÏà¹ØÎĵµ