
Nhóm 14
1
z
z





- 


 Sequential Logic Using
UDP dùng Verilog  : 
 :
:
1.


 12
II.  G 12
 13
 13
 13
 13
5. Cú pháp: 13
 13
 13
 14
 14
1.1. Cú pháp: 14
 14
 14
2.1. Cú pháp: 14
 14

Nhóm 14
3
IV.  15
 15
II. Wire: 16
III. Reg: 16
IV. Input, Output, Inout: 16
 17
II. Supply 0, Supply1: 17
III. Time: 18
 18
V 19
 19

 28
II 29
X. HÀM 30
I. Khai báo hàm: 30
 30
m: 31
 32
 32
 32
 32

33
 33
 33
 33
 33
 34
 34
 34
 35
 35
 36
.37
a. 37
.38

Nhóm 14
5

 39.40



Nhóm 14
6


1.1. 








 





















Nhóm 14
8
thái( finite-state-






Nhóm 14
9

 







- 



- 





- 




- 


parameter,
* which defaults to 1.
*
* RST Synchronous reset
* C Clock
* A[3:0] Data Input
* B[3:0] Data Input
* Q[9:0] Accumulator output
*/

module MAC1
(input RST, CLK,
input [3:0] A, B,
output [9:0] Q);

parameter stages = 1;

reg [7:0] mul;

Nhóm 14
11
reg [9:0] sum[stages-1:0];
integer i;

always @(posedge CLK) begin
for(i=stages-1; i>0; i = i-1)
sum[i] = sum[i-1];

if(RST)
sum[0] = 0;



n.








// Khai báo module
Module 
tên file.v.
Input 
Output [msb:lsb] b
Reg 
Wire 


Endmodule

Nhóm 14
13
II.  


1. Khoảng trắng










Drive_strenght 



strong1 và strong0 .
Delay





 

1. Các cổng cơ bản:



1.1. Cú pháp:
GATE (drive_strength)#(delays)

Delay

Nhóm 14




Nhóm 14
16



 





1. Cú pháp:
Wire [msb:lsb] tên 
Wand 
Wor 
Tri 

Wire c;
Wand d;
Assign d= a;
Assign 
Wire 
III. Reg:
Reg (register) 






 

1. Cú pháp:
Integer 


Integer 
Assign 
II. Supply 0, Supply1:



Nhóm 14
18
III. Time:



1. Cú pháp:
Time 

Time c;
c = $time
IV. Parameter (Tham số):


1. Cú pháp:
Parameter 

3b0-1< 6.

<, <=, >, >=, = =, !=.
III. Toán tử bit_wire:


~ (bitwire NOT), & (bitwire AND), | (bitwire OR), ^ (bitwire
OR).
IV. Toán tử logic:



 


!(NOT), && (AND), || (OR)
Wire [7:0] x, y, z;
Reg a;

if ((x= = y)&&(z)) a=1;
else a=! x;

Nhóm 14
20
V. Toán tử biến đổi:






Tên
[ ]

( )

!,~

&, |, ~&, ~|, ^, ~^

XNOR.
+, -

{ }

{{ } }

*, /, %

+, -

<<, >>

<, <=, >, >=



= =, !=

&






II. Chọn 1 phần tử bit và chọn 1 phần các bit.




 
1. Cú pháp:



Reg [7:0] a, b;
Reg [3:0] ls;
c = a[7] & b[7];
ls = a[7:4] + b[3:0];
III. Gọi hàm chức năng:




1. Cú pháp:


Assign a = b & c & chk_bc(b, c);
Function chk_bc;

Nhóm 14

Output [7:0] out;
Reg out;

Endmodule

Nhóm 14
24
II. Chỉ định liên tiếp:








1. Cú pháp:
Wire 
Assign 

Wire 
Assign b = c &d;
Assign d = x | y;
III. Module instantiations:
 






 





I. Những chỉ định theo thủ tục:





II. Delay trong chỉ định:


-