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//////////////////////////////////////////////////////////////////////
////                                                              ////
////  spi_shift.v                                                 ////
////                                                              ////
////  This file is part of the SPI IP core project                ////
////  http://www.opencores.org/projects/spi/                      ////
////                                                              ////
////  Author(s):                                                  ////
////      - Simon Srot (simons@opencores.org)                     ////
////                                                              ////
////  All additional information is avaliable in the Readme.txt   ////
////  file.                                                       ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2002 Authors                                   ////
////                                                              ////
//// This source file may be used and distributed without         ////
//// restriction provided that this copyright statement is not    ////
//// removed from the file and that any derivative work contains  ////
//// the original copyright notice and the associated disclaimer. ////
////                                                              ////
//// This source file is free software; you can redistribute it   ////
//// and/or modify it under the terms of the GNU Lesser General   ////
//// Public License as published by the Free Software Foundation; ////
//// either version 2.1 of the License, or (at your option) any   ////
//// later version.                                               ////
////                                                              ////
//// This source is distributed in the hope that it will be       ////
//// useful, but WITHOUT ANY WARRANTY; without even the implied   ////
//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR      ////
//// PURPOSE.  See the GNU Lesser General Public License for more ////
//// details.                                                     ////
////                                                              ////
//// You should have received a copy of the GNU Lesser General    ////
//// Public License along with this source; if not, download it   ////
//// from http://www.opencores.org/lgpl.shtml                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
 `timescale 1ns / 10ps
module spi_flash_clgen (clk_in, rst, go, enable, last_clk, clk_out, pos_edge, neg_edge);
   parameter divider_len = 2;
   parameter divider = 1;
   parameter Tp = 1;
   input                            clk_in;
   input                            rst;
   input                            enable;
   input                            go;
   input                            last_clk;
   output                           clk_out;
   output                           pos_edge;
   output                           neg_edge;
   reg                              clk_out;
   reg                              pos_edge;
   reg                              neg_edge;
   reg [divider_len-1:0]             cnt;
   wire                             cnt_zero;
   wire                             cnt_one;
   assign cnt_zero = cnt == {divider_len{1'b0}};
   assign cnt_one  = cnt == {{divider_len-1{1'b0}}, 1'b1};
   always @(posedge clk_in or posedge rst)
     begin
        if(rst)
          cnt <= #Tp {divider_len{1'b1}};
        else
          begin
             if(!enable || cnt_zero)
               cnt <= #Tp divider;
             else
               cnt <= #Tp cnt - {{divider_len-1{1'b0}}, 1'b1};
          end
     end
   always @(posedge clk_in or posedge rst)
     begin
        if(rst)
          clk_out <= #Tp 1'b0;
        else
          clk_out <= #Tp (enable && cnt_zero && (!last_clk || clk_out)) ? ~clk_out : clk_out;
     end
   always @(posedge clk_in or posedge rst)
     begin
        if(rst)
          begin
             pos_edge  <= #Tp 1'b0;
             neg_edge  <= #Tp 1'b0;
          end
        else
          begin
             pos_edge  <= #Tp (enable && !clk_out && cnt_one) || (!(|divider) && clk_out) || (!(|divider) && go && !enable);
             neg_edge  <= #Tp (enable && clk_out && cnt_one) || (!(|divider) && !clk_out && enable);
          end
     end
endmodule
 `timescale 1ns / 10ps
module spi_flash_shift
  (
   clk, rst, latch, byte_sel, len, go,
   pos_edge, neg_edge,
   lsb, rx_negedge, tx_negedge,
   tip, last,
   p_in, p_out, s_clk, s_in, s_out);
  parameter Tp = 1;
   input                          clk;
   input                          rst;
   input                          latch;
   input [3:0]                     byte_sel;
   input [6-1:0] len;
   input                          lsb;
   input                          tx_negedge;
   input                          rx_negedge;
   input                          go;
   input                          pos_edge;
   input                          neg_edge;
   output                         tip;
   output                         last;
   input [31:0]            p_in;
   output [32-1:0]         p_out;
   input                          s_clk;
   input                          s_in;
   output                         s_out;
   reg                            s_out;
   reg                            tip;
   reg [6:0]       cnt;
   reg [32-1:0]    data;
   wire [6:0]      tx_bit_pos;
   wire [6:0]      rx_bit_pos;
   wire                           rx_clk;
   wire                           tx_clk;
   assign p_out = data;
   assign tx_bit_pos = lsb ? {!(|len), len} - cnt : cnt - {{6{1'b0}},1'b1};
   assign rx_bit_pos = lsb ? {!(|len), len} - (rx_negedge ? cnt + {{6{1'b0}},1'b1} : cnt) : (rx_negedge ? cnt : cnt - {{6{1'b0}},1'b1});
  assign last = !(|cnt);
  assign rx_clk = (rx_negedge ? neg_edge : pos_edge) && (!last || s_clk);
  assign tx_clk = (tx_negedge ? neg_edge : pos_edge) && !last;
  always @(posedge clk or posedge rst)
  begin
    if(rst)
      cnt <= #Tp {6+1{1'b0}};
    else
      begin
        if(tip)
          cnt <= #Tp pos_edge ? (cnt - {{6{1'b0}}, 1'b1}) : cnt;
        else
          cnt <= #Tp !(|len) ? {1'b1, {6{1'b0}}} : {1'b0, len};
      end
  end
  always @(posedge clk or posedge rst)
  begin
    if(rst)
      tip <= #Tp 1'b0;
  else if(go && ~tip)
    tip <= #Tp 1'b1;
  else if(tip && last && pos_edge)
    tip <= #Tp 1'b0;
  end
  always @(posedge clk or posedge rst)
  begin
    if (rst)
      s_out   <= #Tp 1'b0;
    else
      s_out <= #Tp (tx_clk || !tip) ? data[tx_bit_pos[6-1:0]] : s_out;
  end
   always @(posedge clk or posedge rst)
     if (rst)
       data   <= #Tp 32'h03000000;
     else
       if (latch & !tip)
         begin
            if (byte_sel[0])
              data[7:0] <= #Tp p_in[7:0];
            if (byte_sel[1])
              data[15:8] <= #Tp p_in[15:8];
            if (byte_sel[2])
              data[23:16] <= #Tp p_in[23:16];
            if (byte_sel[3])
              data[31:24] <= #Tp p_in[31:24];
         end
       else
         data[rx_bit_pos[6-1:0]] <= #Tp rx_clk ? s_in : data[rx_bit_pos[6-1:0]];
endmodule
 `timescale 1ns / 10ps
module spi_flash_top
  (
   wb_clk_i, wb_rst_i, wb_adr_i, wb_dat_i, wb_dat_o, wb_sel_i,
   wb_we_i, wb_stb_i, wb_cyc_i, wb_ack_o,
   ss_pad_o, sclk_pad_o, mosi_pad_o, miso_pad_i
   );
   parameter divider_len = 2;
   parameter divider = 0;
   parameter Tp = 1;
   input                            wb_clk_i;
   input                            wb_rst_i;
   input [4:2]                      wb_adr_i;
   input [31:0]              wb_dat_i;
   output [31:0]                     wb_dat_o;
   input [3:0]                       wb_sel_i;
   input                            wb_we_i;
   input                            wb_stb_i;
   input                            wb_cyc_i;
   output                           wb_ack_o;
   output [2-1:0]            ss_pad_o;
   output                           sclk_pad_o;
   output                           mosi_pad_o;
   input                            miso_pad_i;
   reg [31:0]                        wb_dat_o;
   reg                              wb_ack_o;
   wire [14-1:0]             ctrl;
   reg [2-1:0]       ss;
   wire [32-1:0]             rx;
   wire [5:0]                        char_len;
   reg                              char_len_ctrl;
   reg                              go;
   wire                             spi_ctrl_sel;
   wire                             spi_tx_sel;
   wire                             spi_ss_sel;
   wire                             tip;
   wire                             pos_edge;
   wire                             neg_edge;
   wire                             last_bit;
  wire                             rx_negedge;
  wire                             tx_negedge;
  wire                             lsb;
  wire                             ass;
   assign spi_ctrl_sel    = wb_cyc_i & wb_stb_i & (wb_adr_i[4:2] == 4);
   assign spi_tx_sel      = wb_cyc_i & wb_stb_i & (wb_adr_i[4:2] == 0);
   assign spi_ss_sel      = wb_cyc_i & wb_stb_i & (wb_adr_i[4:2] == 6);
   always @(posedge wb_clk_i or posedge wb_rst_i)
  begin
     if (wb_rst_i)
       wb_dat_o <= #Tp 32'b0;
     else
       case (wb_adr_i[4:2])
         0:    wb_dat_o <= rx;
         4:    wb_dat_o <= {18'd0, ctrl};
         5:  wb_dat_o <= {{32-divider_len{1'b0}}, divider};
         6:      wb_dat_o <= {{32-2{1'b0}}, ss};
        default:      wb_dat_o  <= rx;
       endcase
  end
   always @(posedge wb_clk_i or posedge wb_rst_i)
     begin
        if (wb_rst_i)
          wb_ack_o <= #Tp 1'b0;
    else
      wb_ack_o <= #Tp wb_cyc_i & wb_stb_i & ~wb_ack_o;
     end
   always @(posedge wb_clk_i or posedge wb_rst_i)
     begin
        if (wb_rst_i)
          {go,char_len_ctrl} <= #Tp 2'b01;
        else if(spi_ctrl_sel && wb_we_i && !tip)
          begin
             if (wb_sel_i[0])
               char_len_ctrl <= #Tp wb_dat_i[5];
             if (wb_sel_i[1])
               go <= #Tp wb_dat_i[8];
          end
        else if(tip && last_bit && pos_edge)
          go <= #Tp 1'b0;
     end
   assign char_len = char_len_ctrl ? 6'd32 : 6'd8;
   assign ass = 1'b0;
   assign lsb = 1'b0;
   assign rx_negedge = 1'b0;
   assign tx_negedge = 1'b1;
   assign ctrl = {ass,1'b0,lsb,tx_negedge,rx_negedge,go,1'b0,1'b0,char_len};
   always @(posedge wb_clk_i or posedge wb_rst_i)
     if (wb_rst_i)
       ss <= #Tp {2{1'b0}};
     else if(spi_ss_sel && wb_we_i && !tip)
       if (wb_sel_i[0])
         ss <= #Tp wb_dat_i[2-1:0];
   assign ss_pad_o = ~((ss & {2{tip & ass}}) | (ss & {2{!ass}}));
   spi_flash_clgen
     #
     (
      .divider_len(divider_len),
      .divider(divider)
      )
     clgen
       (
        .clk_in(wb_clk_i),
        .rst(wb_rst_i),
        .go(go),
        .enable(tip),
        .last_clk(last_bit),
        .clk_out(sclk_pad_o),
        .pos_edge(pos_edge),
        .neg_edge(neg_edge)
        );
   spi_flash_shift  shift
     (
      .clk(wb_clk_i),
      .rst(wb_rst_i),
      .len(char_len[6-1:0]),
      .latch(spi_tx_sel & wb_we_i),
      .byte_sel(wb_sel_i),
      .go(go),
      .pos_edge(pos_edge),
      .neg_edge(neg_edge),
      .lsb(lsb),
      .rx_negedge(rx_negedge),
      .tx_negedge(tx_negedge),
      .tip(tip),
      .last(last_bit),
      .p_in(wb_dat_i),
      .p_out(rx),
      .s_clk(sclk_pad_o),
      .s_in(miso_pad_i),
      .s_out(mosi_pad_o)
      );
endmodule

Line No.	Rev	Author	Line
1	2	marcus.erl	`//////////////////////////////////////////////////////////////////////`
2			`//// ////`
3			`//// spi_shift.v ////`
4			`//// ////`
5			`//// This file is part of the SPI IP core project ////`
6			`//// http://www.opencores.org/projects/spi/ ////`
7			`//// ////`
8			`//// Author(s): ////`
9			`//// - Simon Srot (simons@opencores.org) ////`
10			`//// ////`
11			`//// All additional information is avaliable in the Readme.txt ////`
12			`//// file. ////`
13			`//// ////`
14			`//////////////////////////////////////////////////////////////////////`
15			`//// ////`
16			`//// Copyright (C) 2002 Authors ////`
17			`//// ////`
18			`//// This source file may be used and distributed without ////`
19			`//// restriction provided that this copyright statement is not ////`
20			`//// removed from the file and that any derivative work contains ////`
21			`//// the original copyright notice and the associated disclaimer. ////`
22			`//// ////`
23			`//// This source file is free software; you can redistribute it ////`
24			`//// and/or modify it under the terms of the GNU Lesser General ////`
25			`//// Public License as published by the Free Software Foundation; ////`
26			`//// either version 2.1 of the License, or (at your option) any ////`
27			`//// later version. ////`
28			`//// ////`
29			`//// This source is distributed in the hope that it will be ////`
30			`//// useful, but WITHOUT ANY WARRANTY; without even the implied ////`
31			`//// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ////`
32			`//// PURPOSE. See the GNU Lesser General Public License for more ////`
33			`//// details. ////`
34			`//// ////`
35			`//// You should have received a copy of the GNU Lesser General ////`
36			`//// Public License along with this source; if not, download it ////`
37			`//// from http://www.opencores.org/lgpl.shtml ////`
38			`//// ////`
39			`//////////////////////////////////////////////////////////////////////`
40			`timescale 1ns / 10ps
41			`module spi_flash_clgen (clk_in, rst, go, enable, last_clk, clk_out, pos_edge, neg_edge);`
42			`parameter divider_len = 2;`
43			`parameter divider = 1;`
44			`parameter Tp = 1;`
45			`input clk_in;`
46			`input rst;`
47			`input enable;`
48			`input go;`
49			`input last_clk;`
50			`output clk_out;`
51			`output pos_edge;`
52			`output neg_edge;`
53			`reg clk_out;`
54			`reg pos_edge;`
55			`reg neg_edge;`
56			`reg [divider_len-1:0] cnt;`
57			`wire cnt_zero;`
58			`wire cnt_one;`
59			`assign cnt_zero = cnt == {divider_len{1'b0}};`
60			`assign cnt_one = cnt == {{divider_len-1{1'b0}}, 1'b1};`
61			`always @(posedge clk_in or posedge rst)`
62			`begin`
63			`if(rst)`
64			`cnt <= #Tp {divider_len{1'b1}};`
65			`else`
66			`begin`
67			`if(!enable \|\| cnt_zero)`
68			`cnt <= #Tp divider;`
69			`else`
70			`cnt <= #Tp cnt - {{divider_len-1{1'b0}}, 1'b1};`
71			`end`
72			`end`
73			`always @(posedge clk_in or posedge rst)`
74			`begin`
75			`if(rst)`
76			`clk_out <= #Tp 1'b0;`
77			`else`
78			`clk_out <= #Tp (enable && cnt_zero && (!last_clk \|\| clk_out)) ? ~clk_out : clk_out;`
79			`end`
80			`always @(posedge clk_in or posedge rst)`
81			`begin`
82			`if(rst)`
83			`begin`
84			`pos_edge <= #Tp 1'b0;`
85			`neg_edge <= #Tp 1'b0;`
86			`end`
87			`else`
88			`begin`
89			`pos_edge <= #Tp (enable && !clk_out && cnt_one) \|\| (!(\|divider) && clk_out) \|\| (!(\|divider) && go && !enable);`
90			`neg_edge <= #Tp (enable && clk_out && cnt_one) \|\| (!(\|divider) && !clk_out && enable);`
91			`end`
92			`end`
93			`endmodule`
94			`timescale 1ns / 10ps
95			`module spi_flash_shift`
96			`(`
97			`clk, rst, latch, byte_sel, len, go,`
98			`pos_edge, neg_edge,`
99			`lsb, rx_negedge, tx_negedge,`
100			`tip, last,`
101			`p_in, p_out, s_clk, s_in, s_out);`
102			`parameter Tp = 1;`
103			`input clk;`
104			`input rst;`
105			`input latch;`
106			`input [3:0] byte_sel;`
107			`input [6-1:0] len;`
108			`input lsb;`
109			`input tx_negedge;`
110			`input rx_negedge;`
111			`input go;`
112			`input pos_edge;`
113			`input neg_edge;`
114			`output tip;`
115			`output last;`
116			`input [31:0] p_in;`
117			`output [32-1:0] p_out;`
118			`input s_clk;`
119			`input s_in;`
120			`output s_out;`
121			`reg s_out;`
122			`reg tip;`
123			`reg [6:0] cnt;`
124			`reg [32-1:0] data;`
125			`wire [6:0] tx_bit_pos;`
126			`wire [6:0] rx_bit_pos;`
127			`wire rx_clk;`
128			`wire tx_clk;`
129			`assign p_out = data;`
130			`assign tx_bit_pos = lsb ? {!(\|len), len} - cnt : cnt - {{6{1'b0}},1'b1};`
131			`assign rx_bit_pos = lsb ? {!(\|len), len} - (rx_negedge ? cnt + {{6{1'b0}},1'b1} : cnt) : (rx_negedge ? cnt : cnt - {{6{1'b0}},1'b1});`
132			`assign last = !(\|cnt);`
133			`assign rx_clk = (rx_negedge ? neg_edge : pos_edge) && (!last \|\| s_clk);`
134			`assign tx_clk = (tx_negedge ? neg_edge : pos_edge) && !last;`
135			`always @(posedge clk or posedge rst)`
136			`begin`
137			`if(rst)`
138			`cnt <= #Tp {6+1{1'b0}};`
139			`else`
140			`begin`
141			`if(tip)`
142			`cnt <= #Tp pos_edge ? (cnt - {{6{1'b0}}, 1'b1}) : cnt;`
143			`else`
144			`cnt <= #Tp !(\|len) ? {1'b1, {6{1'b0}}} : {1'b0, len};`
145			`end`
146			`end`
147			`always @(posedge clk or posedge rst)`
148			`begin`
149			`if(rst)`
150			`tip <= #Tp 1'b0;`
151			`else if(go && ~tip)`
152			`tip <= #Tp 1'b1;`
153			`else if(tip && last && pos_edge)`
154			`tip <= #Tp 1'b0;`
155			`end`
156			`always @(posedge clk or posedge rst)`
157			`begin`
158			`if (rst)`
159			`s_out <= #Tp 1'b0;`
160			`else`
161			`s_out <= #Tp (tx_clk \|\| !tip) ? data[tx_bit_pos[6-1:0]] : s_out;`
162			`end`
163			`always @(posedge clk or posedge rst)`
164			`if (rst)`
165			`data <= #Tp 32'h03000000;`
166			`else`
167			`if (latch & !tip)`
168			`begin`
169			`if (byte_sel[0])`
170			`data[7:0] <= #Tp p_in[7:0];`
171			`if (byte_sel[1])`
172			`data[15:8] <= #Tp p_in[15:8];`
173			`if (byte_sel[2])`
174			`data[23:16] <= #Tp p_in[23:16];`
175			`if (byte_sel[3])`
176			`data[31:24] <= #Tp p_in[31:24];`
177			`end`
178			`else`
179			`data[rx_bit_pos[6-1:0]] <= #Tp rx_clk ? s_in : data[rx_bit_pos[6-1:0]];`
180			`endmodule`
181			`timescale 1ns / 10ps
182			`module spi_flash_top`
183			`(`
184			`wb_clk_i, wb_rst_i, wb_adr_i, wb_dat_i, wb_dat_o, wb_sel_i,`
185			`wb_we_i, wb_stb_i, wb_cyc_i, wb_ack_o,`
186			`ss_pad_o, sclk_pad_o, mosi_pad_o, miso_pad_i`
187			`);`
188			`parameter divider_len = 2;`
189			`parameter divider = 0;`
190			`parameter Tp = 1;`
191			`input wb_clk_i;`
192			`input wb_rst_i;`
193			`input [4:2] wb_adr_i;`
194			`input [31:0] wb_dat_i;`
195			`output [31:0] wb_dat_o;`
196			`input [3:0] wb_sel_i;`
197			`input wb_we_i;`
198			`input wb_stb_i;`
199			`input wb_cyc_i;`
200			`output wb_ack_o;`
201			`output [2-1:0] ss_pad_o;`
202			`output sclk_pad_o;`
203			`output mosi_pad_o;`
204			`input miso_pad_i;`
205			`reg [31:0] wb_dat_o;`
206			`reg wb_ack_o;`
207			`wire [14-1:0] ctrl;`
208			`reg [2-1:0] ss;`
209			`wire [32-1:0] rx;`
210			`wire [5:0] char_len;`
211			`reg char_len_ctrl;`
212			`reg go;`
213			`wire spi_ctrl_sel;`
214			`wire spi_tx_sel;`
215			`wire spi_ss_sel;`
216			`wire tip;`
217			`wire pos_edge;`
218			`wire neg_edge;`
219			`wire last_bit;`
220			`wire rx_negedge;`
221			`wire tx_negedge;`
222			`wire lsb;`
223			`wire ass;`
224			`assign spi_ctrl_sel = wb_cyc_i & wb_stb_i & (wb_adr_i[4:2] == 4);`
225			`assign spi_tx_sel = wb_cyc_i & wb_stb_i & (wb_adr_i[4:2] == 0);`
226			`assign spi_ss_sel = wb_cyc_i & wb_stb_i & (wb_adr_i[4:2] == 6);`
227			`always @(posedge wb_clk_i or posedge wb_rst_i)`
228			`begin`
229			`if (wb_rst_i)`
230			`wb_dat_o <= #Tp 32'b0;`
231			`else`
232			`case (wb_adr_i[4:2])`
233			`0: wb_dat_o <= rx;`
234			`4: wb_dat_o <= {18'd0, ctrl};`
235			`5: wb_dat_o <= {{32-divider_len{1'b0}}, divider};`
236			`6: wb_dat_o <= {{32-2{1'b0}}, ss};`
237			`default: wb_dat_o <= rx;`
238			`endcase`
239			`end`
240			`always @(posedge wb_clk_i or posedge wb_rst_i)`
241			`begin`
242			`if (wb_rst_i)`
243			`wb_ack_o <= #Tp 1'b0;`
244			`else`
245			`wb_ack_o <= #Tp wb_cyc_i & wb_stb_i & ~wb_ack_o;`
246			`end`
247			`always @(posedge wb_clk_i or posedge wb_rst_i)`
248			`begin`
249			`if (wb_rst_i)`
250			`{go,char_len_ctrl} <= #Tp 2'b01;`
251			`else if(spi_ctrl_sel && wb_we_i && !tip)`
252			`begin`
253			`if (wb_sel_i[0])`
254			`char_len_ctrl <= #Tp wb_dat_i[5];`
255			`if (wb_sel_i[1])`
256			`go <= #Tp wb_dat_i[8];`
257			`end`
258			`else if(tip && last_bit && pos_edge)`
259			`go <= #Tp 1'b0;`
260			`end`
261			`assign char_len = char_len_ctrl ? 6'd32 : 6'd8;`
262			`assign ass = 1'b0;`
263			`assign lsb = 1'b0;`
264			`assign rx_negedge = 1'b0;`
265			`assign tx_negedge = 1'b1;`
266			`assign ctrl = {ass,1'b0,lsb,tx_negedge,rx_negedge,go,1'b0,1'b0,char_len};`
267			`always @(posedge wb_clk_i or posedge wb_rst_i)`
268			`if (wb_rst_i)`
269			`ss <= #Tp {2{1'b0}};`
270			`else if(spi_ss_sel && wb_we_i && !tip)`
271			`if (wb_sel_i[0])`
272			`ss <= #Tp wb_dat_i[2-1:0];`
273			`assign ss_pad_o = ~((ss & {2{tip & ass}}) \| (ss & {2{!ass}}));`
274			`spi_flash_clgen`
275			`#`
276			`(`
277			`.divider_len(divider_len),`
278			`.divider(divider)`
279			`)`
280			`clgen`
281			`(`
282			`.clk_in(wb_clk_i),`
283			`.rst(wb_rst_i),`
284			`.go(go),`
285			`.enable(tip),`
286			`.last_clk(last_bit),`
287			`.clk_out(sclk_pad_o),`
288			`.pos_edge(pos_edge),`
289			`.neg_edge(neg_edge)`
290			`);`
291			`spi_flash_shift shift`
292			`(`
293			`.clk(wb_clk_i),`
294			`.rst(wb_rst_i),`
295			`.len(char_len[6-1:0]),`
296			`.latch(spi_tx_sel & wb_we_i),`
297			`.byte_sel(wb_sel_i),`
298			`.go(go),`
299			`.pos_edge(pos_edge),`
300			`.neg_edge(neg_edge),`
301			`.lsb(lsb),`
302			`.rx_negedge(rx_negedge),`
303			`.tx_negedge(tx_negedge),`
304			`.tip(tip),`
305			`.last(last_bit),`
306			`.p_in(wb_dat_i),`
307			`.p_out(rx),`
308			`.s_clk(sclk_pad_o),`
309			`.s_in(miso_pad_i),`
310			`.s_out(mosi_pad_o)`
311			`);`
312			`endmodule`

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