OpenCores
URL https://opencores.org/ocsvn/spacewiresystemc/spacewiresystemc/trunk

Subversion Repositories spacewiresystemc

[/] [spacewiresystemc/] [trunk/] [rtl/] [RTL_VB/] [tx_spw.v] - Blame information for rev 33

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

Line No. Rev Author Line
1 5 redbear 
//+FHDR------------------------------------------------------------------------
2 
//Copyright (c) 2013 Latin Group American Integhrated Circuit, Inc. All rights reserved
3 
//GLADIC Open Source RTL
4 
//-----------------------------------------------------------------------------
5 
//FILE NAME      :
6 
//DEPARTMENT     : IC Design / Verification
7 
//AUTHOR         : Felipe Fernandes da Costa
8 
//AUTHOR’S EMAIL :
9 
//-----------------------------------------------------------------------------
10 
//RELEASE HISTORY
11 
//VERSION DATE AUTHOR DESCRIPTION
12 
//1.0 YYYY-MM-DD name
13 
//-----------------------------------------------------------------------------
14 
//KEYWORDS : General file searching keywords, leave blank if none.
15 
//-----------------------------------------------------------------------------
16 
//PURPOSE  : ECSS_E_ST_50_12C_31_july_2008
17 
//-----------------------------------------------------------------------------
18 
//PARAMETERS
19 
//PARAM NAME            RANGE   : DESCRIPTION : DEFAULT : UNITS
20 
//e.g.DATA_WIDTH        [32,16] : width of the DATA : 32:
21 
//-----------------------------------------------------------------------------
22 
//REUSE ISSUES
23 
//Reset Strategy        :
24 
//Clock Domains         :
25 
//Critical Timing       :
26 
//Test Features         :
27 
//Asynchronous I/F      :
28 
//Scan Methodology      :
29 
//Instantiations        :
30 
//Synthesizable (y/n)   :
31 
//Other                 :
32 
//-FHDR------------------------------------------------------------------------
33 
 
34 
`timescale 1ns/1ns
35 
 
36 
module TX_SPW (
37 
                input pclk_tx,
38 
                //
39 
                input [8:0] data_tx_i,
40 
                input txwrite_tx,
41 
                //
42 
                input [7:0] timecode_tx_i,
43 
                input tickin_tx,
44 
                //
45 
                input enable_tx,
46 
                input send_null_tx,
47 
                input send_fct_tx,
48 
 
49 
                //
50 
                input gotfct_tx,
51 
                input send_fct_now,
52 
                //
53 33 redbear 
                output reg tx_dout_e,
54 
                output reg tx_sout_e,
55 5 redbear 
                //
56 8 redbear 
                output  reg ready_tx_data,
57 13 redbear 
                output  reg ready_tx_timecode
58 5 redbear 
 
59 
                );
60 
 
61 
localparam [2:0] tx_spw_start     = 3'b000,
62 
                 tx_spw_null      = 3'b001,
63 
                 tx_spw_null_fct  = 3'b010,
64 
                 tx_spw_full      = 3'b100;
65 
 
66 
localparam [5:0] NULL     = 6'b000001,
67 
                 FCT      = 6'b000010,
68 
                 EOP      = 6'b000100,
69 
                 EEP      = 6'b001000,
70 
                 DATA     = 6'b010000,
71 
                 TIMEC    = 6'b100000;
72 
 
73 25 redbear 
 
74 
localparam [7:0] null_s = 8'b01110100;
75 
localparam [2:0] fct_s  = 3'b100;
76 
localparam [3:0] eop_s  = 4'b0101;
77 
localparam [3:0] eep_s  = 4'b0110;
78 
localparam [13:0] timecode_ss    = 14'b01110000000000;
79 
 
80 
 
81 
 
82 5 redbear 
        reg [2:0] state_tx;
83 
        reg [2:0] next_state_tx;
84 
 
85 25 redbear 
        //reg [7:0]  null_s;
86 
        //reg [2:0]  fct_s;
87 
        //reg [3:0]  eop_s;
88 
        //reg [3:0]  eep_s;
89 5 redbear 
        reg [13:0] timecode_s;
90 
 
91 
        reg [5:0]  last_type;
92 
        reg [8:0]  txdata_flagctrl_tx_last;
93 
        reg [7:0]  last_timein_control_flag_tx;
94 
 
95 
        reg first_time;
96 
 
97 8 redbear 
        reg hold_null;
98 
        reg hold_fct;
99 
        reg hold_data;
100 
        reg hold_time_code;
101 
 
102 5 redbear 
        reg enable_null;
103 
        reg enable_fct;
104 
        reg enable_n_char;
105 
        reg enable_time_code;
106 
 
107 
        reg [2:0] fct_send;
108 
        reg [2:0] fct_flag;
109 6 redbear 
 
110 5 redbear 
        reg [5:0] fct_counter;
111 6 redbear 
        reg [5:0] fct_counter_receive;
112 
 
113 5 redbear 
        reg last_tx_dout;
114 
        reg last_tx_sout;
115 
 
116 33 redbear 
        reg tx_dout;
117 
        reg tx_sout;
118 
 
119 
        reg tx_dout_null;
120 
        reg tx_dout_fct;
121 
        reg tx_dout_timecode;
122 
        reg tx_dout_data;
123 
 
124 17 redbear 
        reg block_sum;
125 19 redbear 
        reg block_sum_fct_send;
126 17 redbear 
 
127 5 redbear 
        reg [3:0] global_counter_transfer;
128 
 
129 33 redbear 
always@(*)
130 
begin
131 
        tx_dout_null = 1'b0;
132 5 redbear 
 
133 33 redbear 
         if(enable_null)
134 
         begin
135 
                 if(first_time  && global_counter_transfer[3:0] == 4'd0)
136 
                 begin
137 
                        tx_dout_null = null_s[7];
138 
                 end
139 
                 else if(last_type == NULL  && global_counter_transfer[3:0] == 4'd0)
140 
                 begin
141 
                        tx_dout_null = !(null_s[6]^null_s[0]^null_s[1]);
142 
                 end
143 
                 else if(last_type == FCT  && global_counter_transfer[3:0] == 4'd0)
144 
                 begin
145 
                        tx_dout_null = !(null_s[6]^fct_s[0]^fct_s[1]);
146 
                 end
147 
                 else if(last_type == EOP  && global_counter_transfer[3:0] == 4'd0)
148 
                 begin
149 
                        tx_dout_null = !(null_s[6]^eop_s[0]^eop_s[1]);
150 
                 end
151 
                 else if(last_type == EEP  && global_counter_transfer[3:0] == 4'd0)
152 
                 begin
153 
                        tx_dout_null = !(null_s[6]^eep_s[0]^eep_s[1]);
154 
                 end
155 
                 else if(last_type == DATA  && global_counter_transfer[3:0] == 4'd0)
156 
                 begin
157 
                        tx_dout_null =  !(null_s[6]^txdata_flagctrl_tx_last[0]^txdata_flagctrl_tx_last[1]^txdata_flagctrl_tx_last[2]^txdata_flagctrl_tx_last[3]^ txdata_flagctrl_tx_last[4]^txdata_flagctrl_tx_last[5]^txdata_flagctrl_tx_last[6]^txdata_flagctrl_tx_last[7]);
158 
                 end
159 
                 else if(last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)
160 
                 begin
161 
                        tx_dout_null =  !(null_s[6]^last_timein_control_flag_tx[7]^last_timein_control_flag_tx[6]^last_timein_control_flag_tx[5]^last_timein_control_flag_tx[4]^last_timein_control_flag_tx[3]^last_timein_control_flag_tx[2]^last_timein_control_flag_tx[1]^last_timein_control_flag_tx[0]);
162 
                 end
163 
                 else if(global_counter_transfer[3:0] == 4'd1)
164 
                 begin
165 
                        tx_dout_null = null_s[6];
166 
                 end
167 
                 else if(global_counter_transfer[3:0] == 4'd2)
168 
                 begin
169 
                        tx_dout_null = null_s[5];
170 
                 end
171 
                 else if(global_counter_transfer[3:0] == 4'd3)
172 
                 begin
173 
                        tx_dout_null = null_s[4];
174 
                 end
175 
                 else if(global_counter_transfer[3:0] == 4'd4)
176 
                 begin
177 
                        tx_dout_null = null_s[3];
178 
                 end
179 
                 else if(global_counter_transfer[3:0] == 4'd5)
180 
                 begin
181 
                        tx_dout_null = null_s[2];
182 
                 end
183 
                 else if(global_counter_transfer[3:0] == 4'd6)
184 
                 begin
185 
                        tx_dout_null = null_s[1];
186 
                 end
187 
                 else if(global_counter_transfer[3:0] == 4'd7)
188 
                 begin
189 
                        tx_dout_null = null_s[0];
190 
                 end
191 
        end
192 
end
193 13 redbear 
 
194 33 redbear 
 
195 5 redbear 
always@(*)
196 
begin
197 
 
198 33 redbear 
        tx_dout_fct = 1'b0;
199 
 
200 
        if(enable_fct)
201 
        begin
202 
 
203 
                 if(last_type == NULL  && global_counter_transfer[3:0] == 4'd0)
204 
                 begin
205 
                        tx_dout_fct = !(fct_s[2]^null_s[0]^null_s[1]);
206 
                 end
207 
                 else if(last_type == FCT  && global_counter_transfer[3:0] == 4'd0)
208 
                 begin
209 
                        tx_dout_fct = !(fct_s[2]^fct_s[0]^fct_s[1]);
210 
                 end
211 
                 else if(last_type == EOP  && global_counter_transfer[3:0] == 4'd0)
212 
                 begin
213 
                        tx_dout_fct = !(fct_s[2]^eop_s[0]^eop_s[1]);
214 
                 end
215 
                 else if(last_type == EEP  && global_counter_transfer[3:0] == 4'd0)
216 
                 begin
217 
                        tx_dout_fct = !(fct_s[2]^eep_s[0]^eep_s[1]);
218 
                 end
219 
                 else if (last_type == DATA && global_counter_transfer[3:0] == 4'd0)
220 
                 begin
221 
                        tx_dout_fct = !(fct_s[2]^txdata_flagctrl_tx_last[0]^txdata_flagctrl_tx_last[1]^txdata_flagctrl_tx_last[2]^txdata_flagctrl_tx_last[3]^ txdata_flagctrl_tx_last[4]^txdata_flagctrl_tx_last[5]^txdata_flagctrl_tx_last[6]^txdata_flagctrl_tx_last[7]);
222 
                 end
223 
                 else if(last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)
224 
                 begin
225 
                        tx_dout_fct = !(fct_s[2]^last_timein_control_flag_tx[7]^last_timein_control_flag_tx[6]^last_timein_control_flag_tx[5]^last_timein_control_flag_tx[4]^last_timein_control_flag_tx[3]^last_timein_control_flag_tx[2]^last_timein_control_flag_tx[1]^last_timein_control_flag_tx[0]);
226 
                 end
227 
                 else if(global_counter_transfer[3:0] == 4'd1)
228 
                 begin
229 
                        tx_dout_fct = fct_s[2];
230 
                 end
231 
                 else if(global_counter_transfer[3:0] == 4'd2)
232 
                 begin
233 
                        tx_dout_fct = fct_s[1];
234 
                 end
235 
                 else if(global_counter_transfer[3:0] == 4'd3)
236 
                 begin
237 
                        tx_dout_fct = fct_s[0];
238 
                 end
239 
 
240 
        end
241 5 redbear 
end
242 33 redbear 
 
243 
always@(*)
244 
begin
245 
        tx_dout_timecode = 1'b0;
246 
 
247 
        if(enable_time_code)
248 
        begin
249 
                 if(last_type == NULL  && global_counter_transfer[3:0] == 4'd0)
250 
                 begin
251 
                        tx_dout_timecode = !(timecode_s[12]^null_s[0]^null_s[1]);
252 
                 end
253 
                 else if(last_type == FCT   && global_counter_transfer[3:0] == 4'd0)
254 
                 begin
255 
                        tx_dout_timecode = !(timecode_s[12]^fct_s[0]^fct_s[1]);
256 
                 end
257 
                 else if (last_type == EOP   && global_counter_transfer[3:0] == 4'd0)
258 
                 begin
259 
                        tx_dout_timecode = !(timecode_s[12]^eop_s[0]^eop_s[1]);
260 
                 end
261 
                 else if( last_type == EEP   && global_counter_transfer[3:0] == 4'd0)
262 
                 begin
263 
                        tx_dout_timecode = !(timecode_s[12]^eep_s[0]^eep_s[1]);
264 
                 end
265 
                 else if( last_type == DATA  && global_counter_transfer[3:0] == 4'd0)
266 
                 begin
267 
                        tx_dout_timecode = !(timecode_s[12]^txdata_flagctrl_tx_last[0]^txdata_flagctrl_tx_last[1]^txdata_flagctrl_tx_last[2]^txdata_flagctrl_tx_last[3]^ txdata_flagctrl_tx_last[4]^txdata_flagctrl_tx_last[5]^txdata_flagctrl_tx_last[6]^txdata_flagctrl_tx_last[7]);
268 
                 end
269 
                 else if( last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)
270 
                 begin
271 
                        tx_dout_timecode = !(timecode_s[12]^last_timein_control_flag_tx[7]^last_timein_control_flag_tx[6]^last_timein_control_flag_tx[5]^last_timein_control_flag_tx[4]^last_timein_control_flag_tx[3]^last_timein_control_flag_tx[2]^last_timein_control_flag_tx[1]^last_timein_control_flag_tx[0]);
272 
                 end
273 
                 else if( global_counter_transfer[3:0] == 4'd1)
274 
                 begin
275 
                        tx_dout_timecode = timecode_s[12];
276 
                 end
277 
                 else if( global_counter_transfer[3:0] == 4'd2)
278 
                 begin
279 
                        tx_dout_timecode = timecode_s[11];
280 
                 end
281 
                 else if( global_counter_transfer[3:0] == 4'd3)
282 
                 begin
283 
                        tx_dout_timecode = timecode_s[10];
284 
                 end
285 
                 else if( global_counter_transfer[3:0] == 4'd4)
286 
                 begin
287 
                        tx_dout_timecode = timecode_s[9];
288 
                 end
289 
                 else if( global_counter_transfer[3:0] == 4'd5)
290 
                 begin
291 
                        tx_dout_timecode = timecode_s[8];
292 
                 end
293 
                 else if( global_counter_transfer[3:0] == 4'd6)
294 
                 begin
295 
                        tx_dout_timecode = timecode_s[0];
296 
                 end
297 
                 else if( global_counter_transfer[3:0] == 4'd7)
298 
                 begin
299 
                        tx_dout_timecode = timecode_s[1];
300 
                 end
301 
                 else if( global_counter_transfer[3:0] == 4'd8)
302 
                 begin
303 
                        tx_dout_timecode = timecode_s[2];
304 
                 end
305 
                 else if(global_counter_transfer[3:0] == 4'd9)
306 
                 begin
307 
                        tx_dout_timecode = timecode_s[3];
308 
                 end
309 
                 else if(global_counter_transfer[3:0] == 4'd10)
310 
                 begin
311 
                        tx_dout_timecode = timecode_s[4];
312 
                 end
313 
                 else if(global_counter_transfer[3:0] == 4'd11)
314 
                 begin
315 
                        tx_dout_timecode = timecode_s[5];
316 
                 end
317 
                 else if( global_counter_transfer[3:0] == 4'd12)
318 
                 begin
319 
                        tx_dout_timecode = timecode_s[6];
320 
                 end
321 
                 else if(global_counter_transfer[3:0] == 4'd13)
322 
                 begin
323 
                        tx_dout_timecode = timecode_s[7];
324 
                 end
325 
        end
326 
end
327 
 
328 
always@(*)
329 
begin
330 
        tx_dout_data = 1'b0;
331 
 
332 
        if(enable_n_char)
333 
        begin
334 
                if(!data_tx_i[8] && last_type == NULL  && global_counter_transfer[3:0] == 4'd0)
335 
                 begin
336 
                        tx_dout_data = !(data_tx_i[8]^null_s[0]^null_s[1]);
337 
                 end
338 
                 else if(!data_tx_i[8] && last_type == FCT && global_counter_transfer[3:0] == 4'd0)
339 
                 begin
340 
                        tx_dout_data = !(data_tx_i[8]^fct_s[0]^fct_s[1]);
341 
                 end
342 
                 else if(!data_tx_i[8] && last_type == EOP  && global_counter_transfer[3:0] == 4'd0)
343 
                 begin
344 
                        tx_dout_data = !(data_tx_i[8]^eop_s[0]^eop_s[1]);
345 
                 end
346 
                 else if(!data_tx_i[8] && last_type == EEP  && global_counter_transfer[3:0] == 4'd0)
347 
                 begin
348 
                        tx_dout_data = !(data_tx_i[8]^eep_s[0]^eep_s[1]);
349 
                 end
350 
                 else if(!data_tx_i[8] && last_type == DATA  && global_counter_transfer[3:0] == 4'd0)
351 
                 begin
352 
                        tx_dout_data = !(data_tx_i[8]^txdata_flagctrl_tx_last[0]^txdata_flagctrl_tx_last[1]^txdata_flagctrl_tx_last[2]^txdata_flagctrl_tx_last[3]^ txdata_flagctrl_tx_last[4]^txdata_flagctrl_tx_last[5]^txdata_flagctrl_tx_last[6]^txdata_flagctrl_tx_last[7]);
353 
                 end
354 
                 else if(!data_tx_i[8] && last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)
355 
                 begin
356 
                        tx_dout_data = !(data_tx_i[8]^last_timein_control_flag_tx[7]^last_timein_control_flag_tx[6]^last_timein_control_flag_tx[5]^last_timein_control_flag_tx[4]^last_timein_control_flag_tx[3]^last_timein_control_flag_tx[2]^last_timein_control_flag_tx[1]^last_timein_control_flag_tx[0]);
357 
                 end
358 
                 else if(data_tx_i[8]  && data_tx_i[1:0] == 2'b00 && last_type == NULL  && global_counter_transfer[3:0] == 4'd0)
359 
                 begin
360 
                        tx_dout_data = !(eop_s[2]^null_s[0]^null_s[1]);
361 
                 end
362 
                 else if(data_tx_i[8] && data_tx_i[1:0] == 2'b00 && last_type == FCT   && global_counter_transfer[3:0] == 4'd0)
363 
                 begin
364 
                        tx_dout_data = !(eop_s[2]^fct_s[0]^fct_s[1]);
365 
                 end
366 
                 else if(data_tx_i[8] && data_tx_i[1:0] == 2'b00 && last_type == EOP  && global_counter_transfer[3:0] == 4'd0)
367 
                 begin
368 
                        tx_dout_data = !(eop_s[2]^eop_s[0]^eop_s[1]);
369 
                 end
370 
                 else if(data_tx_i[8] && data_tx_i[1:0] == 2'b00 && last_type == EEP  && global_counter_transfer[3:0] == 4'd0)
371 
                 begin
372 
                        tx_dout_data = !(eop_s[2]^eep_s[0]^eep_s[1]);
373 
                 end
374 
                 else if(data_tx_i[8]  && data_tx_i[1:0] == 2'b00 && last_type == DATA  && global_counter_transfer[3:0] == 4'd0)
375 
                 begin
376 
                        tx_dout_data = !(eop_s[2]^txdata_flagctrl_tx_last[0]^txdata_flagctrl_tx_last[1]^txdata_flagctrl_tx_last[2]^txdata_flagctrl_tx_last[3]^ txdata_flagctrl_tx_last[4]^txdata_flagctrl_tx_last[5]^txdata_flagctrl_tx_last[6]^txdata_flagctrl_tx_last[7]);
377 
                 end
378 
                 else if(data_tx_i[8]  && data_tx_i[1:0] == 2'b00 && last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)
379 
                 begin
380 
                        tx_dout_data = !(eop_s[2]^last_timein_control_flag_tx[7]^last_timein_control_flag_tx[6]^last_timein_control_flag_tx[5]^last_timein_control_flag_tx[4]^last_timein_control_flag_tx[3]^last_timein_control_flag_tx[2]^last_timein_control_flag_tx[1]^last_timein_control_flag_tx[0]);
381 
                 end
382 
                 else if(data_tx_i[8] && data_tx_i[1:0] == 2'b01 && last_type == NULL  && global_counter_transfer[3:0] == 4'd0)
383 
                 begin
384 
                        tx_dout_data = !(eep_s[2]^null_s[0]^null_s[1]);
385 
                 end
386 
                 else if(data_tx_i[8] & data_tx_i[1:0] == 2'b01 && last_type == FCT  && global_counter_transfer[3:0] == 4'd0)
387 
                 begin
388 
                        tx_dout_data = !(eep_s[2]^fct_s[0]^fct_s[1]);
389 
                 end
390 
                 else if(data_tx_i[8] && data_tx_i[1:0] == 2'b01 && last_type == EOP  && global_counter_transfer[3:0] == 4'd0)
391 
                 begin
392 
                        tx_dout_data = !(eep_s[2]^eop_s[0]^eop_s[1]);
393 
                 end
394 
                 else if(data_tx_i[8] && data_tx_i[1:0] == 2'b01 && last_type == EEP && global_counter_transfer[3:0] == 4'd0)
395 
                 begin
396 
                        tx_dout_data = !(eep_s[2]^eep_s[0]^eep_s[1]);
397 
                 end
398 
                 else if(data_tx_i[8]  && data_tx_i[1:0] == 2'b01 && last_type == DATA && global_counter_transfer[3:0] == 4'd0)
399 
                 begin
400 
                        tx_dout_data = !(eep_s[2]^txdata_flagctrl_tx_last[0]^txdata_flagctrl_tx_last[1]^txdata_flagctrl_tx_last[2]^txdata_flagctrl_tx_last[3]^ txdata_flagctrl_tx_last[4]^txdata_flagctrl_tx_last[5]^txdata_flagctrl_tx_last[6]^txdata_flagctrl_tx_last[7]);
401 
                 end
402 
                 else if(data_tx_i[8]  &&  data_tx_i[1:0] == 2'b01 && last_type == TIMEC && global_counter_transfer[3:0] == 4'd0)
403 
                 begin
404 
                        tx_dout_data = !(eep_s[2]^last_timein_control_flag_tx[7]^last_timein_control_flag_tx[6]^last_timein_control_flag_tx[5]^last_timein_control_flag_tx[4]^last_timein_control_flag_tx[3]^last_timein_control_flag_tx[2]^last_timein_control_flag_tx[1]^last_timein_control_flag_tx[0]);
405 
                 end
406 
                 else if(!data_tx_i[8] &&  global_counter_transfer[3:0] == 4'd1)
407 
                 begin
408 
                        tx_dout_data = data_tx_i[8];
409 
                 end
410 
                 else if(!data_tx_i[8] && global_counter_transfer[3:0] == 4'd2)
411 
                 begin
412 
                        tx_dout_data = data_tx_i[0];
413 
                 end
414 
                 else if(!data_tx_i[8] &&  global_counter_transfer[3:0] == 4'd3)
415 
                 begin
416 
                        tx_dout_data = data_tx_i[1];
417 
                 end
418 
                 else if( !data_tx_i[8] && global_counter_transfer[3:0] == 4'd4)
419 
                 begin
420 
                        tx_dout_data = data_tx_i[2];
421 
                 end
422 
                 else if(!data_tx_i[8]  && global_counter_transfer[3:0] == 4'd5)
423 
                 begin
424 
                        tx_dout_data = data_tx_i[3];
425 
                 end
426 
                 else if(!data_tx_i[8]  && global_counter_transfer[3:0] == 4'd6)
427 
                 begin
428 
                        tx_dout_data = data_tx_i[4];
429 
                 end
430 
                 else if(!data_tx_i[8]  && global_counter_transfer[3:0] == 4'd7)
431 
                 begin
432 
                        tx_dout_data = data_tx_i[5];
433 
                 end
434 
                 else if(!data_tx_i[8] &&  global_counter_transfer[3:0] == 4'd8)
435 
                 begin
436 
                        tx_dout_data = data_tx_i[6];
437 
                 end
438 
                 else if(!data_tx_i[8] &&  global_counter_transfer[3:0] == 4'd9)
439 
                 begin
440 
                        tx_dout_data = data_tx_i[7];
441 
                 end
442 
                 else if(data_tx_i[8] && data_tx_i[1:0] == 2'b01 && global_counter_transfer[3:0] == 4'd1)
443 
                 begin
444 
                        tx_dout_data = eep_s[2];
445 
                 end
446 
                 else if( data_tx_i[8] && data_tx_i[1:0] == 2'b01 && global_counter_transfer[3:0] == 4'd2)
447 
                 begin
448 
                        tx_dout_data = eep_s[1];
449 
                 end
450 
                 else if(data_tx_i[8] && data_tx_i[1:0] == 2'b01 && global_counter_transfer[3:0] == 4'd3)
451 
                 begin
452 
                        tx_dout_data = eep_s[0];
453 
                 end
454 
                 else if(data_tx_i[8] && data_tx_i[1:0] == 2'b00 && global_counter_transfer[3:0] == 4'd1)
455 
                 begin
456 
                        tx_dout_data = eop_s[2];
457 
                 end
458 
                 else if(data_tx_i[8] && data_tx_i[1:0] == 2'b00 && global_counter_transfer[3:0] == 4'd2)
459 
                 begin
460 
                        tx_dout_data = eop_s[1];
461 
                 end
462 
                 else if(data_tx_i[8] && data_tx_i[1:0] == 2'b00 && global_counter_transfer[3:0] == 4'd3)
463 
                 begin
464 
                        tx_dout_data = eop_s[0];
465 
                 end
466 
        end
467 
end
468 5 redbear 
 
469 
//strobe
470 
always@(*)
471 
begin
472 
        tx_sout = 1'b0;
473 
 
474 
        if(!enable_tx)
475 
        begin
476 
                tx_sout = 1'b0;
477 
        end
478 33 redbear 
        else if((enable_null | enable_fct | enable_n_char | enable_time_code) & tx_dout == last_tx_dout)
479 5 redbear 
        begin
480 
                tx_sout = !last_tx_sout;
481 
        end
482 33 redbear 
        else if((enable_null | enable_fct | enable_n_char | enable_time_code) & tx_dout != last_tx_dout)
483 5 redbear 
        begin
484 
                tx_sout = last_tx_sout;
485 33 redbear 
        end
486 5 redbear 
end
487 
 
488 17 redbear 
always@(*)
489 5 redbear 
begin
490 17 redbear 
        fct_counter = 6'd0;
491 
 
492 
        if(gotfct_tx)
493 5 redbear 
        begin
494 17 redbear 
                if(block_sum)
495 15 redbear 
                begin
496 17 redbear 
 
497 
                end
498 
                else
499 
                begin
500 
                        if(fct_counter_receive < 6'd48)
501 15 redbear 
                        begin
502 17 redbear 
                                fct_counter = fct_counter_receive + 6'd8;
503 15 redbear 
                        end
504 
                        else
505 
                        begin
506 17 redbear 
                                fct_counter = fct_counter_receive + 6'd7;
507 
 
508 15 redbear 
                        end
509 
                end
510 5 redbear 
        end
511 
end
512 
 
513 
//slots open in our side
514 19 redbear 
always@(*)
515 5 redbear 
begin
516 
 
517 19 redbear 
        fct_send = {3{1'b0}};
518 
 
519 
        if(send_fct_now)
520 5 redbear 
        begin
521 19 redbear 
                if(block_sum_fct_send)
522 
                begin
523 6 redbear 
 
524 
                end
525 
                else
526 
                begin
527 19 redbear 
                        if(fct_flag == 3'd7)
528 
                        begin
529 
                                fct_send = 3'd0;
530 
                        end
531 
                        else
532 
                        begin
533 
                                fct_send = fct_flag + 3'd1;
534 
 
535 
                        end
536 6 redbear 
                end
537 5 redbear 
        end
538 
end
539 
 
540 
 
541 
always@(*)
542 
begin
543 
 
544 
 
545 
        enable_null      = 1'b0;
546 
        enable_fct       = 1'b0;
547 
        enable_n_char    = 1'b0;
548 
        enable_time_code = 1'b0;
549 
 
550 17 redbear 
        next_state_tx = state_tx;
551 
 
552 5 redbear 
        case(state_tx)
553 
        tx_spw_start:
554 
        begin
555 
                if(send_null_tx && enable_tx)
556 
                begin
557 12 redbear 
                        //if(!hold_null)
558 5 redbear 
                                next_state_tx = tx_spw_null;
559 
 
560 12 redbear 
                        //enable_null = 1'b1;
561 5 redbear 
                end
562 
                else
563 
                begin
564 
                        next_state_tx = tx_spw_start;
565 
                end
566 
        end
567 
        tx_spw_null:
568 
        begin
569 
                enable_null = 1'b1;
570 
 
571 8 redbear 
                if(!hold_null)
572 5 redbear 
                begin
573 
                        if(send_null_tx && send_fct_tx && enable_tx)
574 
                                next_state_tx = tx_spw_null_fct;
575 
                        else
576 
                                next_state_tx = tx_spw_null;
577 
                end
578 
 
579 
        end
580 
        tx_spw_null_fct:
581 
        begin
582 
 
583 
                enable_null   = 1'b1;
584 
 
585 8 redbear 
                if(send_fct_tx && fct_flag > 0  && !hold_null)
586 5 redbear 
                begin
587 8 redbear 
                        next_state_tx = tx_spw_null_fct;
588 5 redbear 
                        enable_null = 1'b0;
589 8 redbear 
                        enable_fct  = 1'b1;
590 5 redbear 
                end
591 
                else
592 
                begin
593 
                        enable_fct = 1'b0;
594 17 redbear 
                        if(send_fct_tx && fct_counter_receive > 6'd0)
595 5 redbear 
                        begin
596 12 redbear 
                                //if(global_counter_transfer == 4'd7)
597 
                                        next_state_tx =  tx_spw_full;
598 5 redbear 
                        end
599 
 
600 
                end
601 
        end
602 
        tx_spw_full:
603 
        begin
604 8 redbear 
                if(tickin_tx && !hold_null && !hold_fct && !hold_data)
605 5 redbear 
                begin
606 6 redbear 
                        enable_time_code = 1'b1;
607 5 redbear 
                end
608 8 redbear 
                else if(fct_flag > 3'd0 && !hold_null && !hold_time_code && !hold_data)
609 5 redbear 
                begin
610 6 redbear 
                        enable_fct  = 1'b1;
611 5 redbear 
                end
612 17 redbear 
                else if((txwrite_tx && fct_counter_receive > 6'd0 && !hold_null && !hold_time_code && !hold_fct) == 1'b1 )
613 5 redbear 
                begin
614 8 redbear 
                        enable_n_char = 1'b1;
615 5 redbear 
                end
616 17 redbear 
                else
617 8 redbear 
                begin
618 
                        enable_null = 1'b1;
619 
                end
620 5 redbear 
        end
621 
        endcase
622 
 
623 
end
624 
 
625 33 redbear 
 
626 
always@(*)
627 
begin
628 
 
629 
        tx_dout = 1'b0;
630 
 
631 
        if(enable_null)
632 
        begin
633 
                tx_dout = tx_dout_null;
634 
        end
635 
        else if(enable_fct)
636 
        begin
637 
                tx_dout = tx_dout_fct;
638 
        end
639 
        else if(enable_time_code)
640 
        begin
641 
                tx_dout = tx_dout_timecode;
642 
        end
643 
        else if(enable_n_char)
644 
        begin
645 
                tx_dout = tx_dout_data;
646 
        end
647 
end
648 
 
649 
 
650 25 redbear 
always@(posedge pclk_tx or negedge enable_tx)
651 5 redbear 
begin
652 
        if(!enable_tx)
653 
        begin
654 33 redbear 
                tx_dout_e <= 1'b0;
655 
                tx_sout_e <= 1'b0;
656 
        end
657 
        else
658 
        begin
659 
                if(enable_null)
660 
                begin
661 
                        tx_dout_e <= tx_dout;
662 
                        tx_sout_e <= tx_sout;
663 
                end
664 
                else if(enable_fct)
665 
                begin
666 
                        tx_dout_e <= tx_dout;
667 
                        tx_sout_e <= tx_sout;
668 
                end
669 
                else if(enable_time_code)
670 
                begin
671 
                        tx_dout_e <= tx_dout;
672 
                        tx_sout_e <= tx_sout;
673 
                end
674 
                else if(enable_n_char)
675 
                begin
676 
                        tx_dout_e <= tx_dout;
677 
                        tx_sout_e <= tx_sout;
678 
                end
679 
        end
680 
end
681 25 redbear 
 
682 33 redbear 
always@(posedge pclk_tx or negedge enable_tx)
683 
begin
684 
        if(!enable_tx)
685 
        begin
686 
 
687 25 redbear 
                timecode_s    <= 14'b01110000000000;
688 19 redbear 
                fct_flag      <= 3'd7;
689 6 redbear 
 
690 13 redbear 
                first_time        <= 1'b1;
691 
                ready_tx_data     <= 1'b0;
692 
                ready_tx_timecode <= 1'b0;
693 8 redbear 
 
694 
                hold_null       <= 1'b0;
695 
                hold_fct        <= 1'b0;
696 
                hold_data       <= 1'b0;
697 
                hold_time_code  <= 1'b0;
698 
 
699 5 redbear 
                last_type  <= NULL;
700 
 
701 
                global_counter_transfer <= 4'd0;
702 
                txdata_flagctrl_tx_last <= 9'd0;
703 
                last_timein_control_flag_tx <= 8'd0;
704 6 redbear 
 
705 
                fct_counter_receive <= 6'd0;
706 17 redbear 
 
707 
                block_sum  <= 1'b0;
708 19 redbear 
                block_sum_fct_send <= 1'b0;
709 6 redbear 
 
710 5 redbear 
                last_tx_dout      <= 1'b0;
711 
                last_tx_sout      <= 1'b0;
712 33 redbear 
 
713 5 redbear 
                state_tx <= tx_spw_start;
714 17 redbear 
 
715 5 redbear 
        end
716 
        else
717 
        begin
718 25 redbear 
 
719 5 redbear 
                state_tx <= next_state_tx;
720 
                last_tx_dout <= tx_dout;
721 
                last_tx_sout <= tx_sout;
722 
 
723 
                if(enable_null)
724 
                begin
725 6 redbear 
 
726 8 redbear 
                        ready_tx_data <= 1'b0;
727 13 redbear 
                        ready_tx_timecode <= 1'b0;
728 25 redbear 
                        //hold_null     <= 1'b0;
729 
                        hold_fct        <= 1'b0;
730 
                        hold_data       <= 1'b0;
731 
                        hold_time_code  <= 1'b0;
732 
 
733 19 redbear 
                        //
734 17 redbear 
                        if(gotfct_tx && !block_sum)
735 
                        begin
736 15 redbear 
                                fct_counter_receive <= fct_counter;
737 17 redbear 
                                block_sum<= 1'b1;
738 
                        end
739 
                        else if(!gotfct_tx)
740 
                        begin
741 
                                block_sum<= 1'b0;
742 
                        end
743 
                        else
744 
                                block_sum <= block_sum;
745 6 redbear 
                        //
746 19 redbear 
                        if(send_fct_now && !block_sum_fct_send)
747 6 redbear 
                        begin
748 19 redbear 
                                fct_flag <= fct_send;
749 
                                block_sum_fct_send<= 1'b1;
750 6 redbear 
                        end
751 19 redbear 
                        else if(!send_fct_now)
752 
                        begin
753 
                                block_sum_fct_send<= 1'b0;
754 
                        end
755 
                        else
756 
                                block_sum_fct_send <= block_sum_fct_send;
757 6 redbear 
 
758 5 redbear 
                        if(first_time)
759 
                        begin
760 
                                first_time <= 1'b0;
761 23 redbear 
                                hold_null  <= 1'b1;
762 5 redbear 
                                global_counter_transfer <= global_counter_transfer + 4'd1;
763 
                        end
764 
                        else if(global_counter_transfer != 4'd7)
765 
                        begin
766 8 redbear 
                                hold_null <= 1'b1;
767 5 redbear 
                                global_counter_transfer <= global_counter_transfer + 4'd1;
768 
                        end
769 
                        else
770 
                        begin
771 8 redbear 
                                hold_null <= 1'b0;
772 25 redbear 
                                last_type  <= NULL;
773 5 redbear 
                                global_counter_transfer <= 4'd0;
774 
                        end
775 
                end
776 
                else if(enable_fct)
777 
                begin
778 8 redbear 
                        ready_tx_data <= 1'b0;
779 13 redbear 
                        ready_tx_timecode <= 1'b0;
780 8 redbear 
 
781 25 redbear 
                        hold_null       <= 1'b0;
782 
                        //hold_fct      <= 1'b0;
783 
                        hold_data       <= 1'b0;
784 
                        hold_time_code  <= 1'b0;
785 
 
786 
 
787 17 redbear 
                        if(gotfct_tx && !block_sum)
788 
                        begin
789 15 redbear 
                                fct_counter_receive <= fct_counter;
790 17 redbear 
                                block_sum<= 1'b1;
791 
                        end
792 
                        else if(!gotfct_tx)
793 
                        begin
794 
                                block_sum<= 1'b0;
795 
                        end
796 
                        else
797 
                                block_sum <= block_sum;
798 6 redbear 
 
799 
 
800 5 redbear 
                        if(global_counter_transfer != 4'd3)
801 
                        begin
802 8 redbear 
                                hold_fct <= 1'b1;
803 5 redbear 
                                global_counter_transfer <= global_counter_transfer + 4'd1;
804 19 redbear 
                                //
805 
                                if(send_fct_now && !block_sum_fct_send)
806 
                                begin
807 
                                        fct_flag <= fct_send;
808 
                                        block_sum_fct_send<= 1'b1;
809 
                                end
810 
                                else if(!send_fct_now)
811 
                                begin
812 
                                        block_sum_fct_send<= 1'b0;
813 
                                end
814 
                                else
815 
                                        block_sum_fct_send <= block_sum_fct_send;
816 5 redbear 
                        end
817 
                        else
818 
                        begin
819 8 redbear 
                                hold_fct <= 1'b0;
820 5 redbear 
                                global_counter_transfer <= 4'd0;
821 6 redbear 
                                fct_flag <= fct_flag - 3'd1;
822 25 redbear 
                                last_type  <=FCT;
823 5 redbear 
                        end
824 
                end
825 
                else if(enable_time_code)
826 
                begin
827 33 redbear 
 
828 25 redbear 
                        hold_null       <= 1'b0;
829 
                        hold_fct        <= 1'b0;
830 
                        hold_data       <= 1'b0;
831 
                        //hold_time_code        <= 1'b0;
832 
 
833 8 redbear 
                        ready_tx_data <= 1'b0;
834 
 
835 17 redbear 
                        if(gotfct_tx && !block_sum)
836 
                        begin
837 15 redbear 
                                fct_counter_receive <= fct_counter;
838 17 redbear 
                                block_sum<= 1'b1;
839 
                        end
840 
                        else if(!gotfct_tx)
841 
                        begin
842 
                                block_sum<= 1'b0;
843 
                        end
844 
                        else
845 
                                block_sum <= block_sum;
846 15 redbear 
 
847 13 redbear 
                        if(global_counter_transfer == 4'd13)
848 
                        begin
849 
                                ready_tx_timecode <= 1'b1;
850 
                        end
851 19 redbear 
 
852 6 redbear 
                        //
853 19 redbear 
                        if(send_fct_now && !block_sum_fct_send)
854 6 redbear 
                        begin
855 19 redbear 
                                fct_flag <= fct_send;
856 
                                block_sum_fct_send<= 1'b1;
857 6 redbear 
                        end
858 19 redbear 
                        else if(!send_fct_now)
859 
                        begin
860 
                                block_sum_fct_send<= 1'b0;
861 
                        end
862 
                        else
863 
                                block_sum_fct_send <= block_sum_fct_send;
864 6 redbear 
 
865 5 redbear 
                        if(global_counter_transfer < 4'd13)
866 
                        begin
867 
                                global_counter_transfer <= global_counter_transfer + 4'd1;
868 25 redbear 
                                timecode_s <= {timecode_ss[13:10],2'd2,timecode_tx_i[7:0]};
869 5 redbear 
                        end
870 
                        else
871 
                        begin
872 13 redbear 
                                last_timein_control_flag_tx <= timecode_tx_i;
873 5 redbear 
                                global_counter_transfer <= 4'd0;
874 25 redbear 
                                last_type  <= TIMEC;
875 5 redbear 
                        end
876 
                end
877 
                else if(enable_n_char)
878 
                begin
879 13 redbear 
                        ready_tx_timecode <= 1'b0;
880 25 redbear 
                        hold_null       <= 1'b0;
881 
                        hold_fct        <= 1'b0;
882 
                        //hold_data     <= 1'b0;
883 
                        hold_time_code  <= 1'b0;
884 
 
885 6 redbear 
                        //
886 19 redbear 
                        if(send_fct_now && !block_sum_fct_send)
887 6 redbear 
                        begin
888 19 redbear 
                                fct_flag <= fct_send;
889 
                                block_sum_fct_send<= 1'b1;
890 6 redbear 
                        end
891 19 redbear 
                        else if(!send_fct_now)
892 
                        begin
893 
                                block_sum_fct_send<= 1'b0;
894 
                        end
895 
                        else
896 
                                block_sum_fct_send <= block_sum_fct_send;
897 6 redbear 
 
898 8 redbear 
                        if(!data_tx_i[8])
899 5 redbear 
                        begin
900 8 redbear 
 
901 
                                if(global_counter_transfer == 4'd9)
902 
                                begin
903 
                                        ready_tx_data <= 1'b1;
904 
                                end
905 17 redbear 
                                else
906 
                                begin
907 
                                        ready_tx_data <= 1'b0;
908 
                                end
909 8 redbear 
 
910 
                                if(global_counter_transfer != 4'd9)
911 
                                begin
912 
                                        hold_data <= 1'b1;
913 
                                        global_counter_transfer <= global_counter_transfer + 4'd1;
914 
                                        txdata_flagctrl_tx_last <= data_tx_i;
915 17 redbear 
 
916 
                                        if(gotfct_tx && !block_sum)
917 
                                        begin
918 
                                                fct_counter_receive <= fct_counter;
919 
                                                block_sum<= 1'b1;
920 
                                        end
921 
                                        else if(!gotfct_tx)
922 
                                        begin
923 
                                                block_sum<= 1'b0;
924 
                                        end
925 
                                        else
926 
                                                block_sum <= block_sum;
927 8 redbear 
                                end
928 
                                else
929 
                                begin
930 
                                        hold_data <= 1'b0;
931 
                                        global_counter_transfer <= 4'd0;
932 15 redbear 
                                        fct_counter_receive <= fct_counter_receive - 6'd1;
933 25 redbear 
                                        last_type  <= DATA;
934 8 redbear 
                                end
935 
 
936 5 redbear 
                        end
937 8 redbear 
                        else if(data_tx_i[8])
938 5 redbear 
                        begin
939 8 redbear 
 
940 
                                if(global_counter_transfer == 4'd3)
941 
                                begin
942 
                                        ready_tx_data <= 1'b1;
943 
                                end
944 17 redbear 
                                else
945 
                                begin
946 
                                        ready_tx_data <= 1'b0;
947 
                                end
948 8 redbear 
 
949 
                                if(global_counter_transfer != 4'd3)
950 
                                begin
951 
                                        hold_data <= 1'b1;
952 
                                        global_counter_transfer <= global_counter_transfer + 4'd1;
953 
                                        txdata_flagctrl_tx_last <= data_tx_i;
954 17 redbear 
 
955 
                                        if(gotfct_tx && !block_sum)
956 
                                        begin
957 
                                                fct_counter_receive <= fct_counter;
958 
                                                block_sum<= 1'b1;
959 
                                        end
960 
                                        else if(!gotfct_tx)
961 
                                        begin
962 
                                                block_sum<= 1'b0;
963 
                                        end
964 
                                        else
965 
                                                block_sum <= block_sum;
966 8 redbear 
                                end
967 
                                else
968 
                                begin
969 15 redbear 
 
970 8 redbear 
                                        hold_data <= 1'b0;
971 
                                        global_counter_transfer <= 4'd0;
972 15 redbear 
                                        fct_counter_receive <= fct_counter_receive - 6'd1;
973 25 redbear 
                                        last_type  <=EOP;
974 8 redbear 
                                end
975 5 redbear 
                        end
976 8 redbear 
 
977 5 redbear 
                end
978 
 
979 
        end
980 
end
981 
 
982 
endmodule

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.