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Initial commit of OpenSPARC T2 design and verification files.
[OpenSPARC-T2-DV] / design / sys / iop / niu / rtl / xpcs_txio_pcs.v
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AT		 1// ========== Copyright Header Begin ==========================================
2//
3// OpenSPARC T2 Processor File: xpcs_txio_pcs.v
4// Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved
5// 4150 Network Circle, Santa Clara, California 95054, U.S.A.
6//
7// * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
8//
9// This program is free software; you can redistribute it and/or modify
10// it under the terms of the GNU General Public License as published by
11// the Free Software Foundation; version 2 of the License.
12//
13// This program is distributed in the hope that it will be useful,
14// but WITHOUT ANY WARRANTY; without even the implied warranty of
15// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16// GNU General Public License for more details.
17//
18// You should have received a copy of the GNU General Public License
19// along with this program; if not, write to the Free Software
20// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21//
22// For the avoidance of doubt, and except that if any non-GPL license
23// choice is available it will apply instead, Sun elects to use only
24// the General Public License version 2 (GPLv2) at this time for any
25// software where a choice of GPL license versions is made
26// available with the language indicating that GPLv2 or any later version
27// may be used, or where a choice of which version of the GPL is applied is
28// otherwise unspecified.
29//
30// Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
31// CA 95054 USA or visit www.sun.com if you need additional information or
32// have any questions.
33//
34// ========== Copyright Header End ============================================
35// ****************************************************************
36//
37// Sun Proprietary/Confidential: Internal Use Only
38//
39// ****************************************************************
40// Design: IB Physical Interface Core
41// Block: IB 8b/10b Encoder
42// Author: Carlos Castil
43//
44// Module: xpcs_txio_pcs
45// File: xpcs_txio_pcs.v
46//
47// Description: This block performs 8b/10b encoding and maintains
48// a running disparity, as well as special symbol
49// generation.
50//
51// Revision History
52// ------------------------------------------------------------
53// Ver Date Comments
54// ------------------------------------------------------------
55// 1.0 10/5/99 Originally leveraged from GEM
56// 1.1 10/5/99 modified to support IB
57// 1.2 10/12/01 modified to support Vega IB
58// 1.3 11/14/02 modified to support xpcs ieee 802.3 ae
59// ****************************************************************
60
61
62
63module xpcs_txio_pcs (
64 reset,
65 tx_clk,
66
67 tx_byte,
68 tx_special,
69
70 tx_symbol);
71
72
73input reset;
74input tx_clk; // 250 MHz TX clk
75
76input [7:0] tx_byte; // incoming data byte or code for the special character
77input tx_special; // used to select special character generation
78
79output [9:0] tx_symbol; // outgoing 10 bits encoded
80
81reg [9:0] tx_symbol;
82reg RDreg;
83
84wire [9:0] tx_symbol_pri;
85wire [9:0] tx_symbol_sp;
86
87wire pos_disp_pri;
88wire pos_disp_sp;
89
90// NOTICE: tx_symbol & RDreg need not be reset since they will
91// be driven with the special code for NULL at reset!
92
93// Register 10 bit symbol output
94
95 always @ (posedge tx_clk)
96 tx_symbol <= tx_special ? tx_symbol_sp : tx_symbol_pri;
97
98// Register running disparity
99
100 always @ (posedge tx_clk)
101 RDreg <= tx_special ? pos_disp_sp : pos_disp_pri;
102
103
104// Encode data byte
105
106function [10:0] encode_pri;
107 input reset;
108 input [7:0] tx_byte;
109 input RDreg;
110 reg pos_disp_pri;
111 reg [9:0] tx_symbol_pri;
112
113 begin
114 if (reset)
115 begin
116 pos_disp_pri = 1'b0;
117 tx_symbol_pri = 10'b0000000000;
118 end
119 else
120 begin
121 pos_disp_pri = 1'b0;
122 tx_symbol_pri = 10'b0000000000;
123
124// always @ (tx_byte or RDreg)
125 case (tx_byte[7:0])// synopsys parallel_case full_case infer_mux
126 //if RD-, choose 1st, if RD+ choose 2nd
127
128 8'h00: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1001110100 : 10'b0110001011), RDreg};
129 8'h01: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0111010100 : 10'b1000101011), RDreg};
130 8'h02: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1011010100 : 10'b0100101011), RDreg};
131 8'h03: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1100011011 : 10'b1100010100), !RDreg};
132
133 8'h04: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1101010100 : 10'b0010101011), RDreg};
134 8'h05: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1010011011 : 10'b1010010100), !RDreg};
135 8'h06: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0110011011 : 10'b0110010100), !RDreg};
136 8'h07: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110001011 : 10'b0001110100), !RDreg};
137
138 8'h08: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110010100 : 10'b0001101011), RDreg};
139 8'h09: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1001011011 : 10'b1001010100), !RDreg};
140 8'h0a: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0101011011 : 10'b0101010100), !RDreg};
141 8'h0b: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1101001011 : 10'b1101000100), !RDreg};
142
143 8'h0c: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0011011011 : 10'b0011010100), !RDreg};
144 8'h0d: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1011001011 : 10'b1011000100), !RDreg};
145 8'h0e: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0111001011 : 10'b0111000100), !RDreg};
146 8'h0f: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0101110100 : 10'b1010001011), RDreg};
147
148 8'h10: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0110110100 : 10'b1001001011), RDreg};
149 8'h11: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1000111011 : 10'b1000110100), !RDreg};
150 8'h12: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0100111011 : 10'b0100110100), !RDreg};
151 8'h13: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1100101011 : 10'b1100100100), !RDreg};
152
153 8'h14: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0010111011 : 10'b0010110100), !RDreg};
154 8'h15: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1010101011 : 10'b1010100100), !RDreg};
155 8'h16: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0110101011 : 10'b0110100100), !RDreg};
156 8'h17: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110100100 : 10'b0001011011), RDreg};
157
158 8'h18: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1100110100 : 10'b0011001011), RDreg};
159 8'h19: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1001101011 : 10'b1001100100), !RDreg};
160 8'h1a: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0101101011 : 10'b0101100100), !RDreg};
161 8'h1b: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1101100100 : 10'b0010011011), RDreg};
162
163 8'h1c: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0011101011 : 10'b0011100100), !RDreg};
164 8'h1d: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1011100100 : 10'b0100011011), RDreg};
165 8'h1e: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0111100100 : 10'b1000011011), RDreg};
166 8'h1f: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1010110100 : 10'b0101001011), RDreg};
167
168 8'h20: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1001111001 : 10'b0110001001), !RDreg};
169 8'h21: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0111011001 : 10'b1000101001), !RDreg};
170 8'h22: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1011011001 : 10'b0100101001), !RDreg};
171 8'h23: {tx_symbol_pri, pos_disp_pri} = {(10'b1100011001), RDreg};
172
173 8'h24: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1101011001 : 10'b0010101001), !RDreg};
174 8'h25: {tx_symbol_pri, pos_disp_pri} = {(10'b1010011001), RDreg};
175 8'h26: {tx_symbol_pri, pos_disp_pri} = {(10'b0110011001), RDreg};
176 8'h27: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110001001 : 10'b0001111001), RDreg};
177
178 8'h28: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110011001 : 10'b0001101001), !RDreg};
179 8'h29: {tx_symbol_pri, pos_disp_pri} = {(10'b1001011001), RDreg};
180 8'h2a: {tx_symbol_pri, pos_disp_pri} = {(10'b0101011001), RDreg};
181 8'h2b: {tx_symbol_pri, pos_disp_pri} = {(10'b1101001001), RDreg};
182
183 8'h2c: {tx_symbol_pri, pos_disp_pri} = {(10'b0011011001), RDreg};
184 8'h2d: {tx_symbol_pri, pos_disp_pri} = {(10'b1011001001), RDreg};
185 8'h2e: {tx_symbol_pri, pos_disp_pri} = {(10'b0111001001), RDreg};
186 8'h2f: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0101111001 : 10'b1010001001), !RDreg};
187
188 8'h30: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0110111001 : 10'b1001001001), !RDreg};
189 8'h31: {tx_symbol_pri, pos_disp_pri} = {(10'b1000111001), RDreg};
190 8'h32: {tx_symbol_pri, pos_disp_pri} = {(10'b0100111001), RDreg};
191 8'h33: {tx_symbol_pri, pos_disp_pri} = {(10'b1100101001), RDreg};
192
193 8'h34: {tx_symbol_pri, pos_disp_pri} = {(10'b0010111001), RDreg};
194 8'h35: {tx_symbol_pri, pos_disp_pri} = {(10'b1010101001), RDreg};
195 8'h36: {tx_symbol_pri, pos_disp_pri} = {(10'b0110101001), RDreg};
196 8'h37: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110101001 : 10'b0001011001), !RDreg};
197
198 8'h38: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1100111001 : 10'b0011001001), !RDreg};
199 8'h39: {tx_symbol_pri, pos_disp_pri} = {(10'b1001101001), RDreg};
200 8'h3a: {tx_symbol_pri, pos_disp_pri} = {(10'b0101101001), RDreg};
201 8'h3b: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1101101001 : 10'b0010011001), !RDreg};
202
203 8'h3c: {tx_symbol_pri, pos_disp_pri} = {(10'b0011101001), RDreg};
204 8'h3d: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1011101001 : 10'b0100011001), !RDreg};
205 8'h3e: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0111101001 : 10'b1000011001), !RDreg};
206 8'h3f: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1010111001 : 10'b0101001001), !RDreg};
207
208 8'h40: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1001110101 : 10'b0110000101), !RDreg};
209 8'h41: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0111010101 : 10'b1000100101), !RDreg};
210 8'h42: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1011010101 : 10'b0100100101), !RDreg};
211 8'h43: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1100010101 : 10'b1100010101), RDreg};
212
213 8'h44: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1101010101 : 10'b0010100101), !RDreg};
214 8'h45: {tx_symbol_pri, pos_disp_pri} = {(10'b1010010101), RDreg};
215 8'h46: {tx_symbol_pri, pos_disp_pri} = {(10'b0110010101), RDreg};
216 8'h47: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110000101 : 10'b0001110101), RDreg};
217
218 8'h48: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110010101 : 10'b0001100101), !RDreg};
219 8'h49: {tx_symbol_pri, pos_disp_pri} = {(10'b1001010101), RDreg};
220 8'h4a: {tx_symbol_pri, pos_disp_pri} = {(10'b0101010101), RDreg};
221 8'h4b: {tx_symbol_pri, pos_disp_pri} = {(10'b1101000101), RDreg};
222
223 8'h4c: {tx_symbol_pri, pos_disp_pri} = {(10'b0011010101), RDreg};
224 8'h4d: {tx_symbol_pri, pos_disp_pri} = {(10'b1011000101), RDreg};
225 8'h4e: {tx_symbol_pri, pos_disp_pri} = {(10'b0111000101), RDreg};
226 8'h4f: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0101110101 : 10'b1010000101), !RDreg};
227
228 8'h50: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0110110101 : 10'b1001000101), !RDreg};
229 8'h51: {tx_symbol_pri, pos_disp_pri} = {(10'b1000110101), RDreg};
230 8'h52: {tx_symbol_pri, pos_disp_pri} = {(10'b0100110101), RDreg};
231 8'h53: {tx_symbol_pri, pos_disp_pri} = {(10'b1100100101), RDreg};
232
233 8'h54: {tx_symbol_pri, pos_disp_pri} = {(10'b0010110101), RDreg};
234 8'h55: {tx_symbol_pri, pos_disp_pri} = {(10'b1010100101), RDreg};
235 8'h56: {tx_symbol_pri, pos_disp_pri} = {(10'b0110100101), RDreg};
236 8'h57: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110100101 : 10'b0001010101), !RDreg};
237
238 8'h58: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1100110101 : 10'b0011000101), !RDreg};
239 8'h59: {tx_symbol_pri, pos_disp_pri} = {(10'b1001100101), RDreg};
240 8'h5a: {tx_symbol_pri, pos_disp_pri} = {(10'b0101100101), RDreg};
241 8'h5b: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1101100101 : 10'b0010010101), !RDreg};
242
243 8'h5c: {tx_symbol_pri, pos_disp_pri} = {(10'b0011100101), RDreg};
244 8'h5d: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1011100101 : 10'b0100010101), !RDreg};
245 8'h5e: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0111100101 : 10'b1000010101), !RDreg};
246 8'h5f: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1010110101 : 10'b0101000101), !RDreg};
247
248 8'h60: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1001110011 : 10'b0110001100), !RDreg};
249 8'h61: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0111010011 : 10'b1000101100), !RDreg};
250 8'h62: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1011010011 : 10'b0100101100), !RDreg};
251 8'h63: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1100011100 : 10'b1100010011), RDreg};
252
253 8'h64: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1101010011 : 10'b0010101100), !RDreg};
254 8'h65: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1010011100 : 10'b1010010011), RDreg};
255 8'h66: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0110011100 : 10'b0110010011), RDreg};
256 8'h67: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110001100 : 10'b0001110011), RDreg};
257
258 8'h68: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110010011 : 10'b0001101100), !RDreg};
259 8'h69: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1001011100 : 10'b1001010011), RDreg};
260 8'h6a: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0101011100 : 10'b0101010011), RDreg};
261 8'h6b: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1101001100 : 10'b1101000011), RDreg};
262
263 8'h6c: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0011011100 : 10'b0011010011), RDreg};
264 8'h6d: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1011001100 : 10'b1011000011), RDreg};
265 8'h6e: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0111001100 : 10'b0111000011), RDreg};
266 8'h6f: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0101110011 : 10'b1010001100), !RDreg};
267
268 8'h70: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0110110011 : 10'b1001001100), !RDreg};
269 8'h71: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1000111100 : 10'b1000110011), RDreg};
270 8'h72: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0100111100 : 10'b0100110011), RDreg};
271 8'h73: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1100101100 : 10'b1100100011), RDreg};
272
273 8'h74: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0010111100 : 10'b0010110011), RDreg};
274 8'h75: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1010101100 : 10'b1010100011), RDreg};
275 8'h76: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0110101100 : 10'b0110100011), RDreg};
276 8'h77: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110100011 : 10'b0001011100), !RDreg};
277
278 8'h78: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1100110011 : 10'b0011001100), !RDreg};
279 8'h79: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1001101100 : 10'b1001100011), RDreg};
280 8'h7a: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0101101100 : 10'b0101100011), RDreg};
281 8'h7b: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1101100011 : 10'b0010011100), !RDreg};
282
283 8'h7c: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0011101100 : 10'b0011100011), RDreg};
284 8'h7d: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1011100011 : 10'b0100011100), !RDreg};
285 8'h7e: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0111100011 : 10'b1000011100), !RDreg};
286 8'h7f: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1010110011 : 10'b0101001100), !RDreg};
287
288 8'h80: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1001110010 : 10'b0110001101), RDreg};
289 8'h81: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0111010010 : 10'b1000101101), RDreg};
290 8'h82: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1011010010 : 10'b0100101101), RDreg};
291 8'h83: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1100011101 : 10'b1100010010), !RDreg};
292
293 8'h84: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1101010010 : 10'b0010101101), RDreg};
294 8'h85: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1010011101 : 10'b1010010010), !RDreg};
295 8'h86: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0110011101 : 10'b0110010010), !RDreg};
296 8'h87: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110001101 : 10'b0001110010), !RDreg};
297
298 8'h88: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110010010 : 10'b0001101101), RDreg};
299 8'h89: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1001011101 : 10'b1001010010), !RDreg};
300 8'h8a: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0101011101 : 10'b0101010010), !RDreg};
301 8'h8b: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1101001101 : 10'b1101000010), !RDreg};
302
303 8'h8c: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0011011101 : 10'b0011010010), !RDreg};
304 8'h8d: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1011001101 : 10'b1011000010), !RDreg};
305 8'h8e: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0111001101 : 10'b0111000010), !RDreg};
306 8'h8f: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0101110010 : 10'b1010001101), RDreg};
307
308 8'h90: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0110110010 : 10'b1001001101), RDreg};
309 8'h91: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1000111101 : 10'b1000110010), !RDreg};
310 8'h92: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0100111101 : 10'b0100110010), !RDreg};
311 8'h93: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1100101101 : 10'b1100100010), !RDreg};
312
313 8'h94: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0010111101 : 10'b0010110010), !RDreg};
314 8'h95: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1010101101 : 10'b1010100010), !RDreg};
315 8'h96: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0110101101 : 10'b0110100010), !RDreg};
316 8'h97: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110100010 : 10'b0001011101), RDreg};
317
318 8'h98: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1100110010 : 10'b0011001101), RDreg};
319 8'h99: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1001101101 : 10'b1001100010), !RDreg};
320 8'h9a: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0101101101 : 10'b0101100010), !RDreg};
321 8'h9b: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1101100010 : 10'b0010011101), RDreg};
322
323 8'h9c: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0011101101 : 10'b0011100010), !RDreg};
324 8'h9d: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1011100010 : 10'b0100011101), RDreg};
325 8'h9e: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0111100010 : 10'b1000011101), RDreg};
326 8'h9f: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1010110010 : 10'b0101001101), RDreg};
327
328 8'ha0: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1001111010 : 10'b0110001010), !RDreg};
329 8'ha1: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0111011010 : 10'b1000101010), !RDreg};
330 8'ha2: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1011011010 : 10'b0100101010), !RDreg};
331 8'ha3: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1100011010 : 10'b1100011010), RDreg};
332
333 8'ha4: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1101011010 : 10'b0010101010), !RDreg};
334 8'ha5: {tx_symbol_pri, pos_disp_pri} = {(10'b1010011010), RDreg};
335 8'ha6: {tx_symbol_pri, pos_disp_pri} = {(10'b0110011010), RDreg};
336 8'ha7: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110001010 : 10'b0001111010), RDreg};
337
338 8'ha8: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110011010 : 10'b0001101010), !RDreg};
339 8'ha9: {tx_symbol_pri, pos_disp_pri} = {(10'b1001011010), RDreg};
340 8'haa: {tx_symbol_pri, pos_disp_pri} = {(10'b0101011010), RDreg};
341 8'hab: {tx_symbol_pri, pos_disp_pri} = {(10'b1101001010), RDreg};
342
343 8'hac: {tx_symbol_pri, pos_disp_pri} = {(10'b0011011010), RDreg};
344 8'had: {tx_symbol_pri, pos_disp_pri} = {(10'b1011001010), RDreg};
345 8'hae: {tx_symbol_pri, pos_disp_pri} = {(10'b0111001010), RDreg};
346 8'haf: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0101111010 : 10'b1010001010), !RDreg};
347
348 8'hb0: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0110111010 : 10'b1001001010), !RDreg};
349 8'hb1: {tx_symbol_pri, pos_disp_pri} = {(10'b1000111010), RDreg};
350 8'hb2: {tx_symbol_pri, pos_disp_pri} = {(10'b0100111010), RDreg};
351 8'hb3: {tx_symbol_pri, pos_disp_pri} = {(10'b1100101010), RDreg};
352
353 8'hb4: {tx_symbol_pri, pos_disp_pri} = {(10'b0010111010), RDreg};
354 8'hb5: {tx_symbol_pri, pos_disp_pri} = {(10'b1010101010), RDreg};
355 8'hb6: {tx_symbol_pri, pos_disp_pri} = {(10'b0110101010), RDreg};
356 8'hb7: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110101010 : 10'b0001011010), !RDreg};
357
358 8'hb8: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1100111010 : 10'b0011001010), !RDreg};
359 8'hb9: {tx_symbol_pri, pos_disp_pri} = {(10'b1001101010), RDreg};
360 8'hba: {tx_symbol_pri, pos_disp_pri} = {(10'b0101101010), RDreg};
361 8'hbb: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1101101010 : 10'b0010011010), !RDreg};
362
363 8'hbc: {tx_symbol_pri, pos_disp_pri} = {(10'b0011101010), RDreg};
364 8'hbd: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1011101010 : 10'b0100011010), !RDreg};
365 8'hbe: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0111101010 : 10'b1000011010), !RDreg};
366 8'hbf: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1010111010 : 10'b0101001010), !RDreg};
367
368 8'hc0: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1001110110 : 10'b0110000110), !RDreg};
369 8'hc1: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0111010110 : 10'b1000100110), !RDreg};
370 8'hc2: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1011010110 : 10'b0100100110), !RDreg};
371 8'hc3: {tx_symbol_pri, pos_disp_pri} = {(10'b1100010110), RDreg};
372
373 8'hc4: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1101010110 : 10'b0010100110), !RDreg};
374 8'hc5: {tx_symbol_pri, pos_disp_pri} = {(10'b1010010110), RDreg};
375 8'hc6: {tx_symbol_pri, pos_disp_pri} = {(10'b0110010110), RDreg};
376 8'hc7: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110000110 : 10'b0001110110), RDreg};
377
378 8'hc8: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110010110 : 10'b0001100110), !RDreg};
379 8'hc9: {tx_symbol_pri, pos_disp_pri} = {(10'b1001010110), RDreg};
380 8'hca: {tx_symbol_pri, pos_disp_pri} = {(10'b0101010110), RDreg};
381 8'hcb: {tx_symbol_pri, pos_disp_pri} = {(10'b1101000110), RDreg};
382
383 8'hcc: {tx_symbol_pri, pos_disp_pri} = {(10'b0011010110), RDreg};
384 8'hcd: {tx_symbol_pri, pos_disp_pri} = {(10'b1011000110), RDreg};
385 8'hce: {tx_symbol_pri, pos_disp_pri} = {(10'b0111000110), RDreg};
386 8'hcf: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0101110110 : 10'b1010000110), !RDreg};
387
388 8'hd0: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0110110110 : 10'b1001000110), !RDreg};
389 8'hd1: {tx_symbol_pri, pos_disp_pri} = {(10'b1000110110), RDreg};
390 8'hd2: {tx_symbol_pri, pos_disp_pri} = {(10'b0100110110), RDreg};
391 8'hd3: {tx_symbol_pri, pos_disp_pri} = {(10'b1100100110), RDreg};
392
393 8'hd4: {tx_symbol_pri, pos_disp_pri} = {(10'b0010110110), RDreg};
394 8'hd5: {tx_symbol_pri, pos_disp_pri} = {(10'b1010100110), RDreg};
395 8'hd6: {tx_symbol_pri, pos_disp_pri} = {(10'b0110100110), RDreg};
396 8'hd7: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110100110 : 10'b0001010110), !RDreg};
397
398 8'hd8: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1100110110 : 10'b0011000110), !RDreg};
399 8'hd9: {tx_symbol_pri, pos_disp_pri} = {(10'b1001100110), RDreg};
400 8'hda: {tx_symbol_pri, pos_disp_pri} = {(10'b0101100110), RDreg};
401 8'hdb: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1101100110 : 10'b0010010110), !RDreg};
402
403 8'hdc: {tx_symbol_pri, pos_disp_pri} = {(10'b0011100110), RDreg};
404 8'hdd: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1011100110 : 10'b0100010110), !RDreg};
405 8'hde: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0111100110 : 10'b1000010110), !RDreg};
406 8'hdf: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1010110110 : 10'b0101000110), !RDreg};
407
408 8'he0: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1001110001 : 10'b0110001110), RDreg};
409 8'he1: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0111010001 : 10'b1000101110), RDreg};
410 8'he2: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1011010001 : 10'b0100101110), RDreg};
411 8'he3: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1100011110 : 10'b1100010001), !RDreg};
412
413 8'he4: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1101010001 : 10'b0010101110), RDreg};
414 8'he5: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1010011110 : 10'b1010010001), !RDreg};
415 8'he6: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0110011110 : 10'b0110010001), !RDreg};
416 8'he7: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110001110 : 10'b0001110001), !RDreg};
417
418 8'he8: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110010001 : 10'b0001101110), RDreg};
419 8'he9: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1001011110 : 10'b1001010001), !RDreg};
420 8'hea: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0101011110 : 10'b0101010001), !RDreg};
421 8'heb: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1101001110 : 10'b1101001000), !RDreg};
422
423 8'hec: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0011011110 : 10'b0011010001), !RDreg};
424 8'hed: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1011001110 : 10'b1011001000), !RDreg};
425 8'hee: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0111001110 : 10'b0111001000), !RDreg};
426 8'hef: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0101110001 : 10'b1010001110), RDreg};
427
428 8'hf0: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0110110001 : 10'b1001001110), RDreg};
429 8'hf1: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1000110111 : 10'b1000110001), !RDreg};
430 8'hf2: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0100110111 : 10'b0100110001), !RDreg};
431 8'hf3: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1100101110 : 10'b1100100001), !RDreg};
432
433 8'hf4: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0010110111 : 10'b0010110001), !RDreg};
434 8'hf5: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1010101110 : 10'b1010100001), !RDreg};
435 8'hf6: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0110101110 : 10'b0110100001), !RDreg};
436 8'hf7: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1110100001 : 10'b0001011110), RDreg};
437
438 8'hf8: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1100110001 : 10'b0011001110), RDreg};
439 8'hf9: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1001101110 : 10'b1001100001), !RDreg};
440 8'hfa: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0101101110 : 10'b0101100001), !RDreg};
441 8'hfb: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1101100001 : 10'b0010011110), RDreg};
442
443 8'hfc: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0011101110 : 10'b0011100001), !RDreg};
444 8'hfd: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1011100001 : 10'b0100011110), RDreg};
445 8'hfe: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b0111100001 : 10'b1000011110), RDreg};
446 8'hff: {tx_symbol_pri, pos_disp_pri} = {(!RDreg ? 10'b1010110001 : 10'b0101001110), RDreg};
447// endcase
448
449 default : // Drive NULL
450 {tx_symbol_pri, pos_disp_pri} = {(10'b0000000000), 1'b0};
451
452 endcase
453
454 end // else
455
456 encode_pri = {tx_symbol_pri, pos_disp_pri};
457
458 end // function
459
460 endfunction
461
462
463assign {tx_symbol_pri, pos_disp_pri} = encode_pri(reset, tx_byte, RDreg);
464
465
466// Encode Control Symbols
467
468function [10:0] encode_sp;
469 input reset;
470 input [7:0] tx_byte;
471 input RDreg;
472 reg pos_disp_sp;
473 reg [9:0] tx_symbol_sp;
474
475 begin
476 if (reset)
477 begin
478 pos_disp_sp = 1'b0;
479 tx_symbol_sp = 10'b0000000000;
480 end
481 else
482 begin
483 pos_disp_sp = 1'b0;
484 tx_symbol_sp = 10'b0000000000;
485
486
487// always @ (tx_byte or RDreg)
488 case (tx_byte[7:0]) //synopsys full_case parallel_case infer_mux
489 //if RD-, choose 1st, if RD+ choose 2nd
490
491// IB Required Symbols
492
493 `XPCS_ENC_COM : // K28.5 - COM (Comma, character boundary alignment symbol)
494 {tx_symbol_sp, pos_disp_sp} = {(!RDreg ? 10'b0011111010 : 10'b1100000101), !RDreg};
495 `XPCS_ENC_SDP : // K27.7 - SDP (Start of data packet delimiter)
496 {tx_symbol_sp, pos_disp_sp} = {(!RDreg ? 10'b1101101000 : 10'b0010010111), RDreg};
497 `XPCS_ENC_SLP : // K28.2 - SLP (Start of link packet delimiter)
498 {tx_symbol_sp, pos_disp_sp} = {(!RDreg ? 10'b0011110101 : 10'b1100001010), !RDreg};
499 `XPCS_ENC_EGP : // K29.7 - EGP (End of good packet delimiter)
500 {tx_symbol_sp, pos_disp_sp} = {(!RDreg ? 10'b1011101000 : 10'b0100010111), RDreg};
501 `XPCS_ENC_EBP : // K30.7 - EBP (End of bad packet delimiter)
502 {tx_symbol_sp, pos_disp_sp} = {(!RDreg ? 10'b0111101000 : 10'b1000010111), RDreg};
503 `XPCS_ENC_PAD : // K23.7 - PAD (Packet padding symbol)
504 {tx_symbol_sp, pos_disp_sp} = {(!RDreg ? 10'b1110101000 : 10'b0001010111), RDreg};
505 `XPCS_ENC_SKP : // K28.0 - SKP (Skip symbol)
506 {tx_symbol_sp, pos_disp_sp} = {(!RDreg ? 10'b0011110100 : 10'b1100001011), RDreg};
507 `XPCS_ENC_ALG : // K28.3 - ALG (Alignment symbol)
508 {tx_symbol_sp, pos_disp_sp} = {(!RDreg ? 10'b0011110011 : 10'b1100001100), !RDreg};
509 `XPCS_ENC_SEQ : // K28.4 - SEQ (Sequence symbol)
510 {tx_symbol_sp, pos_disp_sp} = {(!RDreg ? 10'b0011110010 : 10'b1100001101), RDreg};
511
512
513// Reserved Symbols - Not Needed
514
515/*
516 `XPCS_ENC_RS1 : // K28.1 - Reserved Symbol #1
517 {tx_symbol_sp, pos_disp_sp} = {(!RDreg ? 10'b0011111001 : 10'b1100000110), !RDreg};
518 `XPCS_ENC_RS4 : // K28.6 - Reserved Symbol #4
519 {tx_symbol_sp, pos_disp_sp} = {(!RDreg ? 10'b0011110110 : 10'b1100001001), !RDreg};
520 `XPCS_ENC_RS5 : // K28.7 - Reserved Symbol #5
521 {tx_symbol_sp, pos_disp_sp} = {(!RDreg ? 10'b0011111000 : 10'b1100000111), RDreg};
522*/
523
524// Default Case
525
526 default : // Drive NULL
527 {tx_symbol_sp, pos_disp_sp} = {(10'b0000000000), 1'b0};
528
529 endcase
530
531 end // else
532
533 encode_sp = {tx_symbol_sp, pos_disp_sp};
534
535 end // function
536
537 endfunction
538
539
540assign {tx_symbol_sp , pos_disp_sp } = encode_sp(reset, tx_byte, RDreg);
541
542
543endmodule
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