URL https://opencores.org/ocsvn/or1k/or1k/trunk

Subversion Repositories or1k

[/] [or1k/] [trunk/] [mp3/] [lib/] [xilinx/] [unisims/] [CLKDLL.v] - Blame information for rev 1767

Go to most recent revision | Details | Compare with Previous | View Log


// $Header: /home/marcus/revision_ctrl_test/oc_cvs/cvs/or1k/mp3/lib/xilinx/unisims/CLKDLL.v,v 1.1.1.1 2001-11-04 18:59:46 lampret Exp $
 
/*
 
FUNCTION        : Clock Delay Locked Loop
 
*/
 
`timescale  1 ps / 1 ps
 
module CLKDLL (CLK0, CLK90, CLK180, CLK270, CLK2X, CLKDV, LOCKED,
               CLKIN, CLKFB, RST);
 
parameter CLKDV_DIVIDE = 2.0;
parameter DUTY_CYCLE_CORRECTION = "TRUE";
parameter MAXPERCLKIN = 100000;
 
input  CLKIN, CLKFB, RST;
output CLK0, CLK90, CLK180, CLK270, CLK2X, CLKDV, LOCKED;
reg    CLK0, CLK90, CLK180, CLK270, CLK2X, CLKDV;
 
reg    lock_period, lock_delay, lock_clkin, lock_clkfb;
reg    delay_found;
time   clkin_edge[0:1];
time   delay_edge[0:1];
time   period, delay, delay_fb;
 
wire   clkin_in, clkfb_in, rst_in;
reg    locked_out;
wire   clk0_int, clk2x_int, clk4x_int, clkdv_int;
wire   clk2x_2575, clk2x_5050;
 
reg    clkin_window, clkfb_window;
reg    clk1x, clkin_5050, clk1x_5050;
reg    clk1x_shift125, clk1x_shift250;
reg    clk2x_shift;
 
reg    [7:0] count3, count4, count5;
reg    [32:1] divider;
reg    [7:0] divide_type;
reg    clk1x_type;
reg    rst_1, rst_2;
reg    notifier;
 
initial begin
  clk1x          <= 0;
  clk1x_5050     <= 0;
  clk1x_shift125 <= 0;
  clk1x_shift250 <= 0;
  clk2x_shift    <= 0;
  clkfb_window   <= 0;
  clkin_5050     <= 0;
  clkin_edge[0]  <= 1'bx;
  clkin_edge[1]  <= 1'bx;
  clkin_window   <= 0;
  count3         <= 0;
  count4         <= 0;
  count5         <= 0;
  delay          <= 0;
  delay_fb       <= 0;
  delay_found    <= 0;
  divider        <= 0;
  lock_delay     <= 0;
  lock_period    <= 0;
  period         <= 0;
 
  case (DUTY_CYCLE_CORRECTION)
    "false" : clk1x_type <= 0;
    "FALSE" : clk1x_type <= 0;
    "true"  : clk1x_type <= 1;
    "TRUE"  : clk1x_type <= 1;
    default : begin
                $display("Error : DUTY_CYCLE_CORRECTION = %s is neither TRUE nor FALSE.", DUTY_CYCLE_CORRECTION);
                $finish;
              end
  endcase
 
  case (CLKDV_DIVIDE)
    1.5   : divide_type <= 'd3;
    2.0   : divide_type <= 'd4;
    2.5   : divide_type <= 'd5;
    3.0   : divide_type <= 'd6;
    4.0   : divide_type <= 'd8;
    5.0   : divide_type <= 'd10;
    8.0   : divide_type <= 'd16;
    16.0  : divide_type <= 'd32;
    default : begin
                $display("Error : CLKDV_DIVIDE = %f is not 1.5, 2.0, 2.5, 3.0, 4.0, 5.0, 8.0 or 16.0.", CLKDV_DIVIDE);
                $finish;
              end
  endcase
end
 
//
// input wire delays
//
buf b_clkin (clkin_in, CLKIN);
buf b_clkfb (clkfb_in, CLKFB);
buf b_rst (rst_in, RST);
buf b_locked (LOCKED, locked_out);
 
//
// determine clock period
//
always @(posedge clkin_in) begin
  clkin_edge[0] <= $time;
  clkin_edge[1] <= clkin_edge[0];
  if (rst_2)
    period <= 0;
  else if (period < clkin_edge[0] - clkin_edge[1] - 100)
    period <= clkin_edge[0] - clkin_edge[1];
  else if (period > clkin_edge[0] - clkin_edge[1] + 100)
    period <= clkin_edge[0] - clkin_edge[1];
end
 
always @(period) begin // period changed reset everything
  clk1x          <= 0;
  clk1x_5050     <= 0;
  clk1x_shift125 <= 0;
  clk1x_shift250 <= 0;
  clk2x_shift    <= 0;
  clkin_5050     <= 0;
  delay          <= 0;
  delay_fb       <= 0;
  delay_found    <= 0;
  lock_delay     <= 0;
  lock_period    <= 0;
  if (period < clkin_edge[0] - clkin_edge[1] - 100)
    lock_period <= 0;
  else if (period > clkin_edge[0] - clkin_edge[1] + 100)
    lock_period <= 0;
  else if ((clkin_edge[0] != 1'bx) && (clkin_edge[1] != 1'bx))
    lock_period <= 1;
end
 
always @(posedge lock_period) begin
  if (period > MAXPERCLKIN) begin
    $display("    \$maxperiod( posedge CLKIN:%0.3f", $time/1000, "ns,  %0d", MAXPERCLKIN, " : %0.3f", period/1000, "ns );");
  end
end
 
//
// determine clock delay
//
always @ (lock_period or delay_found) begin
  if (lock_period && !delay_found) begin
    assign CLK0 = 0; assign CLK2X = 0;
    #period
    assign CLK0 = 1; assign CLK2X = 1;
    delay_edge[1] = $time;
    @(posedge clkfb_in)
    delay_edge[0] = $time;
    #period
    assign CLK0 = 0; assign CLK2X = 0;
    deassign CLK0; deassign CLK2X;
    delay = (10 * period - (delay_edge[0] - delay_edge[1])) % period;
    delay_found = 1;
  end
end
 
always @ (lock_period or delay_found) begin
  if (lock_period && delay_found) begin
    for (delay_fb = 0; delay_fb < delay; delay_fb = delay_fb + 1000)
      @(posedge clkin_in);
    delay_fb <= delay;
  end
end
 
always @ (posedge clkin_in) begin
  if (rst_2) begin
    clk1x          <= 0;
    clk1x_5050     <= 0;
    clk1x_shift125 <= 0;
    clk1x_shift250 <= 0;
    clk2x_shift    <= 0;
    clkin_5050     <= 0;
    delay          <= 0;
    delay_fb       <= 0;
    delay_found    <= 0;
    lock_delay     <= 0;
    lock_period    <= 0;
    period         <= 0;
  end
end
 
always @ (posedge clkfb_in) begin
  #0   clkfb_window = 1;
  #100 clkfb_window = 0;
end
 
always @ (posedge clkin_in) begin
  #0   clkin_window = 1;
  #100 clkin_window = 0;
end
 
always @ (posedge clkin_in) begin
  #1
  if (clkfb_window && delay_found)
    lock_clkin <= 1;
  else
    lock_clkin <= 0;
end
 
always @ (posedge clkfb_in) begin
  #1
  if (clkin_window && delay_found)
    lock_clkfb <= 1;
  else
    lock_clkfb <= 0;
  @ (posedge clkfb_in);
end
 
always @ (lock_clkin or lock_clkfb) begin
  if (lock_clkin || lock_clkfb)
    lock_delay <= 1;
  else
    lock_delay <= 0;
end
 
//
// generate master reset signal
//
always @ (posedge clkin_in) begin
   {rst_2,rst_1} <= {rst_1,rst_in};
end
 
//
// generate lock signal
//
always @ (posedge clkin_in) begin
  locked_out <= lock_delay & lock_period & ~rst_2;
end
 
//
// generate the clk0_int
//
always @ (clkin_in) begin
  if (delay_found)
    clk1x <= #delay_fb clkin_in;
end
 
always @ (posedge clkin_in) begin
  clkin_5050 <= 1;
  #(period/2)
  clkin_5050 <= 0;
end
 
always @ (clkin_5050) begin
  if (delay_found)
    clk1x_5050 <= #delay_fb clkin_5050;
end
 
assign clk0_int = (clk1x_type) ? clk1x_5050 : clk1x;
 
//
// generate the clk2x_int
//
always @(clk1x_5050) begin
  clk1x_shift125 <= #(period/8) clk1x_5050;
  clk1x_shift250 <= #(period/4) clk1x_5050;
end
 
assign clk2x_2575 = clk1x_5050 & ~clk1x_shift250;
assign clk2x_5050 = clk1x_5050 ^ clk1x_shift250;
assign clk2x_int = (locked_out) ? clk2x_5050 : clk2x_2575;
 
//
// generate the clk4x_int
//
always @(clk2x_5050) begin
  clk2x_shift <= #(period/8) clk2x_5050;
end
 
assign clk4x_int = locked_out & (clk2x_5050 ^ clk2x_shift);
 
//
// generate the clkdv_int
//
always @ (negedge rst_2) begin
  count3  <= 0;
  count4  <= 0;
  count5  <= 0;
  divider <= 0;
end
 
always @(posedge clk4x_int) begin
  if (count3 == 0)
    divider[3] <= divider[3] + 1;
  count3 <= (count3 + 1) % 3;
end
 
always @(posedge clk4x_int) begin
  if (count4 == 0)
    divider[4] <= divider[4] + 1;
  count4 <= (count4 + 1) % 4;
end
 
always @(posedge clk4x_int) begin
  if (count5 == 0)
    divider[5] <= divider[5] + 1;
  count5 <= (count5 + 1) % 5;
end
 
always @(posedge divider[3]) begin
  divider[6] <= divider[6] + 1;
end
 
always @(posedge divider[4]) begin
  divider[8] <= divider[8] + 1;
end
 
always @(posedge divider[5]) begin
  divider[10] <= divider[10] + 1;
end
 
always @(posedge divider[8]) begin
  divider[16] <= divider[16] + 1;
end
 
always @(posedge divider[16]) begin
  divider[32] <= divider[32] + 1;
end
 
assign clkdv_int = divider[divide_type];
 
//
// generate all output signal
//
always @ (clk0_int) begin
    CLK0 <= clk0_int;
end
 
always @ (clk0_int) begin
    CLK90 <= #(period/4) clk0_int;
end
 
always @ (clk0_int) begin
    CLK180 <= #(period/2) clk0_int;
end
 
always @ (clk0_int) begin
    CLK270 <= #(3*period/4) clk0_int;
end
 
always @ (clk2x_int) begin
    CLK2X <= clk2x_int;
end
 
always @ (clkdv_int) begin
    CLKDV <= clkdv_int;
end
 
specify
        specparam CLKFBDLYLH = 0:0:0, CLKFBDLYHL = 0:0:0;
        specparam CLKINDLYLH = 0:0:0, CLKINDLYHL = 0:0:0;
        specparam RSTDLYLH = 0:0:0, RSTDLYHL = 0:0:0;
        specparam LOCKEDDLYLH = 0:0:0, LOCKEDDLYHL = 0:0:0;
        specparam PWCLKINHI = 0:0:0, PWCLKINLO = 0:0:0;
        specparam PWRSTHI = 0:0:0;
        specparam MINPERCLKIN = 10:10:10;
 
        (CLKIN => LOCKED) = (CLKINDLYLH + LOCKEDDLYLH, CLKINDLYHL + LOCKEDDLYHL);
        $width (posedge CLKIN, PWCLKINHI, 0, notifier);
        $width (negedge CLKIN, PWCLKINLO, 0, notifier);
        $width (posedge RST, PWRSTHI, 0, notifier);
        $period (posedge CLKIN, MINPERCLKIN, notifier);
endspecify
 
endmodule

Browse

Tools

Subversion Repositories or1k

[/] [or1k/] [trunk/] [mp3/] [lib/] [xilinx/] [unisims/] [CLKDLL.v] - Blame information for rev 1767

Line No.	Rev	Author	Line
1	266	lampret	`// $Header: /home/marcus/revision_ctrl_test/oc_cvs/cvs/or1k/mp3/lib/xilinx/unisims/CLKDLL.v,v 1.1.1.1 2001-11-04 18:59:46 lampret Exp $`
2
3			`/*`
4
5			`FUNCTION : Clock Delay Locked Loop`
6
7			`*/`
8
9			`timescale 1 ps / 1 ps
10
11			`module CLKDLL (CLK0, CLK90, CLK180, CLK270, CLK2X, CLKDV, LOCKED,`
12			`CLKIN, CLKFB, RST);`
13
14			`parameter CLKDV_DIVIDE = 2.0;`
15			`parameter DUTY_CYCLE_CORRECTION = "TRUE";`
16			`parameter MAXPERCLKIN = 100000;`
17
18			`input CLKIN, CLKFB, RST;`
19			`output CLK0, CLK90, CLK180, CLK270, CLK2X, CLKDV, LOCKED;`
20			`reg CLK0, CLK90, CLK180, CLK270, CLK2X, CLKDV;`
21
22			`reg lock_period, lock_delay, lock_clkin, lock_clkfb;`
23			`reg delay_found;`
24			`time clkin_edge[0:1];`
25			`time delay_edge[0:1];`
26			`time period, delay, delay_fb;`
27
28			`wire clkin_in, clkfb_in, rst_in;`
29			`reg locked_out;`
30			`wire clk0_int, clk2x_int, clk4x_int, clkdv_int;`
31			`wire clk2x_2575, clk2x_5050;`
32
33			`reg clkin_window, clkfb_window;`
34			`reg clk1x, clkin_5050, clk1x_5050;`
35			`reg clk1x_shift125, clk1x_shift250;`
36			`reg clk2x_shift;`
37
38			`reg [7:0] count3, count4, count5;`
39			`reg [32:1] divider;`
40			`reg [7:0] divide_type;`
41			`reg clk1x_type;`
42			`reg rst_1, rst_2;`
43			`reg notifier;`
44
45			`initial begin`
46			`clk1x <= 0;`
47			`clk1x_5050 <= 0;`
48			`clk1x_shift125 <= 0;`
49			`clk1x_shift250 <= 0;`
50			`clk2x_shift <= 0;`
51			`clkfb_window <= 0;`
52			`clkin_5050 <= 0;`
53			`clkin_edge[0] <= 1'bx;`
54			`clkin_edge[1] <= 1'bx;`
55			`clkin_window <= 0;`
56			`count3 <= 0;`
57			`count4 <= 0;`
58			`count5 <= 0;`
59			`delay <= 0;`
60			`delay_fb <= 0;`
61			`delay_found <= 0;`
62			`divider <= 0;`
63			`lock_delay <= 0;`
64			`lock_period <= 0;`
65			`period <= 0;`
66
67			`case (DUTY_CYCLE_CORRECTION)`
68			`"false" : clk1x_type <= 0;`
69			`"FALSE" : clk1x_type <= 0;`
70			`"true" : clk1x_type <= 1;`
71			`"TRUE" : clk1x_type <= 1;`
72			`default : begin`
73			`$display("Error : DUTY_CYCLE_CORRECTION = %s is neither TRUE nor FALSE.", DUTY_CYCLE_CORRECTION);`
74			`$finish;`
75			`end`
76			`endcase`
77
78			`case (CLKDV_DIVIDE)`
79			`1.5 : divide_type <= 'd3;`
80			`2.0 : divide_type <= 'd4;`
81			`2.5 : divide_type <= 'd5;`
82			`3.0 : divide_type <= 'd6;`
83			`4.0 : divide_type <= 'd8;`
84			`5.0 : divide_type <= 'd10;`
85			`8.0 : divide_type <= 'd16;`
86			`16.0 : divide_type <= 'd32;`
87			`default : begin`
88			`$display("Error : CLKDV_DIVIDE = %f is not 1.5, 2.0, 2.5, 3.0, 4.0, 5.0, 8.0 or 16.0.", CLKDV_DIVIDE);`
89			`$finish;`
90			`end`
91			`endcase`
92			`end`
93
94			`//`
95			`// input wire delays`
96			`//`
97			`buf b_clkin (clkin_in, CLKIN);`
98			`buf b_clkfb (clkfb_in, CLKFB);`
99			`buf b_rst (rst_in, RST);`
100			`buf b_locked (LOCKED, locked_out);`
101
102			`//`
103			`// determine clock period`
104			`//`
105			`always @(posedge clkin_in) begin`
106			`clkin_edge[0] <= $time;`
107			`clkin_edge[1] <= clkin_edge[0];`
108			`if (rst_2)`
109			`period <= 0;`
110			`else if (period < clkin_edge[0] - clkin_edge[1] - 100)`
111			`period <= clkin_edge[0] - clkin_edge[1];`
112			`else if (period > clkin_edge[0] - clkin_edge[1] + 100)`
113			`period <= clkin_edge[0] - clkin_edge[1];`
114			`end`
115
116			`always @(period) begin // period changed reset everything`
117			`clk1x <= 0;`
118			`clk1x_5050 <= 0;`
119			`clk1x_shift125 <= 0;`
120			`clk1x_shift250 <= 0;`
121			`clk2x_shift <= 0;`
122			`clkin_5050 <= 0;`
123			`delay <= 0;`
124			`delay_fb <= 0;`
125			`delay_found <= 0;`
126			`lock_delay <= 0;`
127			`lock_period <= 0;`
128			`if (period < clkin_edge[0] - clkin_edge[1] - 100)`
129			`lock_period <= 0;`
130			`else if (period > clkin_edge[0] - clkin_edge[1] + 100)`
131			`lock_period <= 0;`
132			`else if ((clkin_edge[0] != 1'bx) && (clkin_edge[1] != 1'bx))`
133			`lock_period <= 1;`
134			`end`
135
136			`always @(posedge lock_period) begin`
137			`if (period > MAXPERCLKIN) begin`
138			`$display(" \$maxperiod( posedge CLKIN:%0.3f", $time/1000, "ns, %0d", MAXPERCLKIN, " : %0.3f", period/1000, "ns );");`
139			`end`
140			`end`
141
142			`//`
143			`// determine clock delay`
144			`//`
145			`always @ (lock_period or delay_found) begin`
146			`if (lock_period && !delay_found) begin`
147			`assign CLK0 = 0; assign CLK2X = 0;`
148			`#period`
149			`assign CLK0 = 1; assign CLK2X = 1;`
150			`delay_edge[1] = $time;`
151			`@(posedge clkfb_in)`
152			`delay_edge[0] = $time;`
153			`#period`
154			`assign CLK0 = 0; assign CLK2X = 0;`
155			`deassign CLK0; deassign CLK2X;`
156			`delay = (10 * period - (delay_edge[0] - delay_edge[1])) % period;`
157			`delay_found = 1;`
158			`end`
159			`end`
160
161			`always @ (lock_period or delay_found) begin`
162			`if (lock_period && delay_found) begin`
163			`for (delay_fb = 0; delay_fb < delay; delay_fb = delay_fb + 1000)`
164			`@(posedge clkin_in);`
165			`delay_fb <= delay;`
166			`end`
167			`end`
168
169			`always @ (posedge clkin_in) begin`
170			`if (rst_2) begin`
171			`clk1x <= 0;`
172			`clk1x_5050 <= 0;`
173			`clk1x_shift125 <= 0;`
174			`clk1x_shift250 <= 0;`
175			`clk2x_shift <= 0;`
176			`clkin_5050 <= 0;`
177			`delay <= 0;`
178			`delay_fb <= 0;`
179			`delay_found <= 0;`
180			`lock_delay <= 0;`
181			`lock_period <= 0;`
182			`period <= 0;`
183			`end`
184			`end`
185
186			`always @ (posedge clkfb_in) begin`
187			`#0 clkfb_window = 1;`
188			`#100 clkfb_window = 0;`
189			`end`
190
191			`always @ (posedge clkin_in) begin`
192			`#0 clkin_window = 1;`
193			`#100 clkin_window = 0;`
194			`end`
195
196			`always @ (posedge clkin_in) begin`
197			`#1`
198			`if (clkfb_window && delay_found)`
199			`lock_clkin <= 1;`
200			`else`
201			`lock_clkin <= 0;`
202			`end`
203
204			`always @ (posedge clkfb_in) begin`
205			`#1`
206			`if (clkin_window && delay_found)`
207			`lock_clkfb <= 1;`
208			`else`
209			`lock_clkfb <= 0;`
210			`@ (posedge clkfb_in);`
211			`end`
212
213			`always @ (lock_clkin or lock_clkfb) begin`
214			`if (lock_clkin \|\| lock_clkfb)`
215			`lock_delay <= 1;`
216			`else`
217			`lock_delay <= 0;`
218			`end`
219
220			`//`
221			`// generate master reset signal`
222			`//`
223			`always @ (posedge clkin_in) begin`
224			`{rst_2,rst_1} <= {rst_1,rst_in};`
225			`end`
226
227			`//`
228			`// generate lock signal`
229			`//`
230			`always @ (posedge clkin_in) begin`
231			`locked_out <= lock_delay & lock_period & ~rst_2;`
232			`end`
233
234			`//`
235			`// generate the clk0_int`
236			`//`
237			`always @ (clkin_in) begin`
238			`if (delay_found)`
239			`clk1x <= #delay_fb clkin_in;`
240			`end`
241
242			`always @ (posedge clkin_in) begin`
243			`clkin_5050 <= 1;`
244			`#(period/2)`
245			`clkin_5050 <= 0;`
246			`end`
247
248			`always @ (clkin_5050) begin`
249			`if (delay_found)`
250			`clk1x_5050 <= #delay_fb clkin_5050;`
251			`end`
252
253			`assign clk0_int = (clk1x_type) ? clk1x_5050 : clk1x;`
254
255			`//`
256			`// generate the clk2x_int`
257			`//`
258			`always @(clk1x_5050) begin`
259			`clk1x_shift125 <= #(period/8) clk1x_5050;`
260			`clk1x_shift250 <= #(period/4) clk1x_5050;`
261			`end`
262
263			`assign clk2x_2575 = clk1x_5050 & ~clk1x_shift250;`
264			`assign clk2x_5050 = clk1x_5050 ^ clk1x_shift250;`
265			`assign clk2x_int = (locked_out) ? clk2x_5050 : clk2x_2575;`
266
267			`//`
268			`// generate the clk4x_int`
269			`//`
270			`always @(clk2x_5050) begin`
271			`clk2x_shift <= #(period/8) clk2x_5050;`
272			`end`
273
274			`assign clk4x_int = locked_out & (clk2x_5050 ^ clk2x_shift);`
275
276			`//`
277			`// generate the clkdv_int`
278			`//`
279			`always @ (negedge rst_2) begin`
280			`count3 <= 0;`
281			`count4 <= 0;`
282			`count5 <= 0;`
283			`divider <= 0;`
284			`end`
285
286			`always @(posedge clk4x_int) begin`
287			`if (count3 == 0)`
288			`divider[3] <= divider[3] + 1;`
289			`count3 <= (count3 + 1) % 3;`
290			`end`
291
292			`always @(posedge clk4x_int) begin`
293			`if (count4 == 0)`
294			`divider[4] <= divider[4] + 1;`
295			`count4 <= (count4 + 1) % 4;`
296			`end`
297
298			`always @(posedge clk4x_int) begin`
299			`if (count5 == 0)`
300			`divider[5] <= divider[5] + 1;`
301			`count5 <= (count5 + 1) % 5;`
302			`end`
303
304			`always @(posedge divider[3]) begin`
305			`divider[6] <= divider[6] + 1;`
306			`end`
307
308			`always @(posedge divider[4]) begin`
309			`divider[8] <= divider[8] + 1;`
310			`end`
311
312			`always @(posedge divider[5]) begin`
313			`divider[10] <= divider[10] + 1;`
314			`end`
315
316			`always @(posedge divider[8]) begin`
317			`divider[16] <= divider[16] + 1;`
318			`end`
319
320			`always @(posedge divider[16]) begin`
321			`divider[32] <= divider[32] + 1;`
322			`end`
323
324			`assign clkdv_int = divider[divide_type];`
325
326			`//`
327			`// generate all output signal`
328			`//`
329			`always @ (clk0_int) begin`
330			`CLK0 <= clk0_int;`
331			`end`
332
333			`always @ (clk0_int) begin`
334			`CLK90 <= #(period/4) clk0_int;`
335			`end`
336
337			`always @ (clk0_int) begin`
338			`CLK180 <= #(period/2) clk0_int;`
339			`end`
340
341			`always @ (clk0_int) begin`
342			`CLK270 <= #(3*period/4) clk0_int;`
343			`end`
344
345			`always @ (clk2x_int) begin`
346			`CLK2X <= clk2x_int;`
347			`end`
348
349			`always @ (clkdv_int) begin`
350			`CLKDV <= clkdv_int;`
351			`end`
352
353			`specify`
354			`specparam CLKFBDLYLH = 0:0:0, CLKFBDLYHL = 0:0:0;`
355			`specparam CLKINDLYLH = 0:0:0, CLKINDLYHL = 0:0:0;`
356			`specparam RSTDLYLH = 0:0:0, RSTDLYHL = 0:0:0;`
357			`specparam LOCKEDDLYLH = 0:0:0, LOCKEDDLYHL = 0:0:0;`
358			`specparam PWCLKINHI = 0:0:0, PWCLKINLO = 0:0:0;`
359			`specparam PWRSTHI = 0:0:0;`
360			`specparam MINPERCLKIN = 10:10:10;`
361
362			`(CLKIN => LOCKED) = (CLKINDLYLH + LOCKEDDLYLH, CLKINDLYHL + LOCKEDDLYHL);`
363			`$width (posedge CLKIN, PWCLKINHI, 0, notifier);`
364			`$width (negedge CLKIN, PWCLKINLO, 0, notifier);`
365			`$width (posedge RST, PWRSTHI, 0, notifier);`
366			`$period (posedge CLKIN, MINPERCLKIN, notifier);`
367			`endspecify`
368
369			`endmodule`