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Verification Environment:



This is simple verification environment.
It has top,tb,packet,Driver, Scoreboard and Receiver components.







Top Module:



Top module contains the instance of the Dut and verification environment.
It also has the clock generator. For more information about clock generation, go through TB_CONCEPTS in this website. Do reset and Confgure the dut port address.


CODE: top
module top();
reg clock;
wire packet_valid;
wire [7:0] data;
wire [7:0] data_0;
wire [7:0] data_1;
wire [7:0] data_2;
wire [7:0] data_3;
wire ready_0;
wire ready_1;
wire ready_2;
wire ready_3;
wire read_0;
wire read_1;
wire read_2;
wire read_3;

reg reset;
reg mem_en;
reg mem_rd_wr;
reg [7:0] mem_data;
reg [1:0] mem_add;
reg [7:0] mem[3:0];

// take istance of testbench
sw_tb tb (clock,
packet_valid,
data,
data_0,
data_1,
data_2,
data_3,
ready_0,
ready_1,
ready_2,
ready_3,
read_0,
read_1,
read_2,
read_3);

// take instance dut
switch dut (clock,
reset,
packet_valid,
data,
data_0,
data_1,
data_2,
data_3,
ready_0,
ready_1,
ready_2,
ready_3,
read_0,
read_1,
read_2,
read_3,
mem_en,
mem_rd_wr,
mem_add,
mem_data);


//Clock generator
initial
clock = 0;
always
begin
#5 clock = !clock;
end

// Do reset and configure the dut port address
initial begin
$dumpon;
mem[0]=$random;
mem[1]=$random;
mem[2]=$random;
mem[3]=$random;
mem_en = 0;
@(posedge clock);
#2 reset = 1;
@(posedge clock);
#2 reset =0;
mem_en = 1;
@(negedge clock);
mem_rd_wr = 1;
mem_add = 0;
mem_data = mem[0];
@(negedge clock);
mem_rd_wr = 1;
mem_add = 1;
mem_data = mem[1];
@(negedge clock);
mem_rd_wr = 1;
mem_add = 2;
mem_data = mem[2];
@(negedge clock);
mem_rd_wr = 1;
mem_add = 3;
mem_data = mem[3];
@(negedge clock);
mem_en=0;
mem_rd_wr = 0;
mem_add = 0;
mem_data = 0;
end



endmodule //top
Index
Dut Specification
Rtl
Top
Packet
Driver
Reciever
Scoreboard
Env

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