1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
|
module packet_splitter_tb();
reg sys_clk = 0;
reg sys_rst = 1;
reg gpif_clk = 0;
reg gpif_rst = 1;
reg [15:0] gpif_data;
reg WR = 0, EP = 0;
wire CF, DF;
wire gpif_full_d, gpif_full_c;
wire [18:0] data_o, ctrl_o, data_splt;
wire src_rdy, dst_rdy, src_rdy_splt, dst_rdy_splt;
wire ctrl_src_rdy, ctrl_dst_rdy;
assign ctrl_dst_rdy = 1;
initial $dumpfile("packet_splitter_tb.vcd");
initial $dumpvars(0,packet_splitter_tb);
initial #1000 gpif_rst = 0;
initial #1000 sys_rst = 0;
always #64 gpif_clk <= ~gpif_clk;
always #47.9 sys_clk <= ~sys_clk;
wire [35:0] data_int;
wire src_rdy_int, dst_rdy_int;
assign dst_rdy_splt = 1;
vita_pkt_gen vita_pkt_gen
(.clk(sys_clk), .reset(sys_rst) , .clear(0),
.len(7),.data_o(data_int), .src_rdy_o(src_rdy_int), .dst_rdy_i(dst_rdy_int));
fifo36_to_fifo19 #(.LE(1)) f36_to_f19
(.clk(sys_clk), .reset(sys_rst), .clear(0),
.f36_datain(data_int), .f36_src_rdy_i(src_rdy_int), .f36_dst_rdy_o(dst_rdy_int),
.f19_dataout(data_o), .f19_src_rdy_o(src_rdy), .f19_dst_rdy_i(dst_rdy));
packet_splitter #(.FRAME_LEN(13)) rx_packet_splitter
(.clk(sys_clk), .reset(sys_rst), .clear(0),
.frames_per_packet(3),
.data_i(data_o), .src_rdy_i(src_rdy), .dst_rdy_o(dst_rdy),
.data_o(data_splt), .src_rdy_o(src_rdy_splt), .dst_rdy_i(dst_rdy_splt));
always @(posedge sys_clk)
if(ctrl_src_rdy & ctrl_dst_rdy)
$display("CTRL: %x",ctrl_o);
always @(posedge sys_clk)
if(src_rdy_splt & dst_rdy_splt)
begin
if(data_splt[16])
$display("<-------- DATA SOF--------->");
$display("DATA: %x",data_splt);
if(data_splt[17])
$display("<-------- DATA EOF--------->");
end
initial
begin
#10000;
repeat (1)
begin
@(posedge gpif_clk);
WR <= 1;
gpif_data <= 256; // Length
@(posedge gpif_clk);
gpif_data <= 16'h00;
@(posedge gpif_clk);
repeat(254)
begin
gpif_data <= gpif_data + 1;
@(posedge gpif_clk);
end
WR <= 0;
while(DF)
@(posedge gpif_clk);
repeat (16)
@(posedge gpif_clk);
WR <= 1;
repeat(256)
begin
gpif_data <= gpif_data - 1;
@(posedge gpif_clk);
end
WR <= 0;
/*
while(DF)
@(posedge gpif_clk);
repeat (20)
@(posedge gpif_clk);
WR <= 1;
gpif_data <= 16'h5;
@(posedge gpif_clk);
gpif_data <= 16'h00;
@(posedge gpif_clk);
repeat(254)
begin
gpif_data <= gpif_data - 1;
@(posedge gpif_clk);
end
WR <= 0;
*/
end
end // initial begin
initial #200000 $finish;
endmodule // packet_splitter_tb
|
