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basic_verilog/Advanced Synthesis Cookbook/crc/crc32_dat32.v

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Added altera cookbook
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// Copyright 2007 Altera Corporation. All rights reserved.
// Altera products are protected under numerous U.S. and foreign patents,
// maskwork rights, copyrights and other intellectual property laws.
//
// This reference design file, and your use thereof, is subject to and governed
// by the terms and conditions of the applicable Altera Reference Design
// License Agreement (either as signed by you or found at www.altera.com). By
// using this reference design file, you indicate your acceptance of such terms
// and conditions between you and Altera Corporation. In the event that you do
// not agree with such terms and conditions, you may not use the reference
// design file and please promptly destroy any copies you have made.
//
// This reference design file is being provided on an "as-is" basis and as an
// accommodation and therefore all warranties, representations or guarantees of
// any kind (whether express, implied or statutory) including, without
// limitation, warranties of merchantability, non-infringement, or fitness for
// a particular purpose, are specifically disclaimed. By making this reference
// design file available, Altera expressly does not recommend, suggest or
// require that this reference design file be used in combination with any
// other product not provided by Altera.
/////////////////////////////////////////////////////////////////////////////
//// CRC-32 of 32 data bits. MSB used first.
// Polynomial 04c11db7 (MSB excluded)
// x^26 + x^23 + x^22 + x^16 + x^12 + x^11 + x^10 + x^8 + x^7 + x^5 + x^4 + x^2 + x^1 + x^0
//
// Optimal LUT depth 2
//
// CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD
// 00000000001111111111222222222233 00000000001111111111222222222233
// 01234567890123456789012345678901 01234567890123456789012345678901
//
// C00 = X.....X..XX.X...X.......XXX.XXXX X.....X..XX.X...X.......XXX.XXXX
// C01 = XX....XX.X.XXX..XX......X..XX... XX....XX.X.XXX..XX......X..XX...
// C02 = XXX...XXXX...XX.XXX.....X.X...XX XXX...XXXX...XX.XXX.....X.X...XX
// C03 = .XXX...XXXX...XX.XXX.....X.X...X .XXX...XXXX...XX.XXX.....X.X...X
// C04 = X.XXX.X.X..XX..X..XXX...XX...XXX X.XXX.X.X..XX..X..XXX...XX...XXX
// C05 = XX.XXXXX..X..X.....XXX..X...XX.. XX.XXXXX..X..X.....XXX..X...XX..
// C06 = .XX.XXXXX..X..X.....XXX..X...XX. .XX.XXXXX..X..X.....XXX..X...XX.
// C07 = X.XX.X.XX.X....XX....XXXXX..XX.. X.XX.X.XX.X....XX....XXXXX..XX..
// C08 = XX.XX...X.XXX....X....XX....X..X XX.XX...X.XXX....X....XX....X..X
// C09 = .XX.XX...X.XXX....X....XX....X.. .XX.XX...X.XXX....X....XX....X..
// C10 = X.XX.X...X...XX.X..X......X.XX.X X.XX.X...X...XX.X..X......X.XX.X
// C11 = XX.XX....X..X.XXXX..X...XXXXX..X XX.XX....X..X.XXXX..X...XXXXX..X
// C12 = XXX.XXX..X..XX.X.XX..X..X..X..XX XXX.XXX..X..XX.X.XX..X..X..X..XX
// C13 = .XXX.XXX..X..XX.X.XX..X..X..X..X .XXX.XXX..X..XX.X.XX..X..X..X..X
// C14 = ..XXX.XXX..X..XX.X.XX..X..X..X.. ..XXX.XXX..X..XX.X.XX..X..X..X..
// C15 = ...XXX.XXX..X..XX.X.XX..X..X..X. ...XXX.XXX..X..XX.X.XX..X..X..X.
// C16 = X...XX..X...XX...X.X.XX.X.X..XX. X...XX..X...XX...X.X.XX.X.X..XX.
// C17 = .X...XX..X...XX...X.X.XX.X.X..XX .X...XX..X...XX...X.X.XX.X.X..XX
// C18 = ..X...XX..X...XX...X.X.XX.X.X..X ..X...XX..X...XX...X.X.XX.X.X..X
// C19 = ...X...XX..X...XX...X.X.XX.X.X.. ...X...XX..X...XX...X.X.XX.X.X..
// C20 = ....X...XX..X...XX...X.X.XX.X.X. ....X...XX..X...XX...X.X.XX.X.X.
// C21 = .....X...XX..X...XX...X.X.XX.X.X .....X...XX..X...XX...X.X.XX.X.X
// C22 = X........X.XX.X.X.XX...XX.XX.X.X X........X.XX.X.X.XX...XX.XX.X.X
// C23 = XX....X..X...X.XXX.XX.....XX.X.X XX....X..X...X.XXX.XX.....XX.X.X
// C24 = .XX....X..X...X.XXX.XX.....XX.X. .XX....X..X...X.XXX.XX.....XX.X.
// C25 = ..XX....X..X...X.XXX.XX.....XX.X ..XX....X..X...X.XXX.XX.....XX.X
// C26 = X..XX.X...X.......XXX.XXXXX.X..X X..XX.X...X.......XXX.XXXXX.X..X
// C27 = .X..XX.X...X.......XXX.XXXXX.X.. .X..XX.X...X.......XXX.XXXXX.X..
// C28 = ..X..XX.X...X.......XXX.XXXXX.X. ..X..XX.X...X.......XXX.XXXXX.X.
// C29 = ...X..XX.X...X.......XXX.XXXXX.X ...X..XX.X...X.......XXX.XXXXX.X
// C30 = ....X..XX.X...X.......XXX.XXXXX. ....X..XX.X...X.......XXX.XXXXX.
// C31 = .....X..XX.X...X.......XXX.XXXXX .....X..XX.X...X.......XXX.XXXXX
//
module crc32_dat32 (crc_in,dat_in,crc_out);
input [31:0] crc_in;
input [31:0] dat_in;
output [31:0] crc_out;
wire [31:0] crc_out;
parameter METHOD = 1;
generate
if (METHOD == 0)
crc32_dat32_flat cc (.crc_in(crc_in),.dat_in(dat_in),.crc_out(crc_out));
else
crc32_dat32_factor cc (.crc_in(crc_in),.dat_in(dat_in),.crc_out(crc_out));
endgenerate
endmodule
////////////////////////////////////////////////////////////////
// Flat version
////////////////////////////////////////////////////////////////
module crc32_dat32_flat (crc_in,dat_in,crc_out);
input [31:0] crc_in;
input [31:0] dat_in;
output [31:0] crc_out;
wire [31:0] crc_out;
wire x31, x30, x29, x28, x27, x26, x25,
x24, x23, x22, x21, x20, x19, x18, x17,
x16, x15, x14, x13, x12, x11, x10, x9,
x8, x7, x6, x5, x4, x3, x2, x1,
x0;
assign crc_out = {x31,x30,x29,x28,x27,x26,x25,x24,x23,x22,x21,x20,x19,x18,x17,
x16,x15,x14,x13,x12,x11,x10,x9,x8,x7,x6,x5,x4,x3,x2,x1,
x0};
wire d0,d1,d2,d3,d4,d5,d6,d7,d8,d9,d10,d11,d12,d13,d14,
d15,d16,d17,d18,d19,d20,d21,d22,d23,d24,d25,d26,d27,d28,d29,d30,
d31;
assign { d31,d30,d29,d28,d27,d26,d25,d24,d23,d22,d21,d20,d19,d18,d17,
d16,d15,d14,d13,d12,d11,d10,d9,d8,d7,d6,d5,d4,d3,d2,d1,
d0} = dat_in [31:0];
wire c0,c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,
c15,c16,c17,c18,c19,c20,c21,c22,c23,c24,c25,c26,c27,c28,c29,c30,
c31;
assign { c31,c30,c29,c28,c27,c26,c25,c24,c23,c22,c21,c20,c19,c18,c17,
c16,c15,c14,c13,c12,c11,c10,c9,c8,c7,c6,c5,c4,c3,c2,c1,
c0} = crc_in [31:0];
assign x31 = d31 ^ d29 ^ c29 ^ c30 ^ d30 ^ d11 ^ d8 ^ d15 ^ c27 ^
d28 ^ c28 ^ d9 ^ d5 ^ c15 ^ d25 ^ c11 ^ c8 ^ c9 ^ d24 ^
c31 ^ c23 ^ c25 ^ c24 ^ d23 ^ d27 ^ c5; // 26 ins 1 outs
assign x30 = c14 ^ d30 ^ d28 ^ c28 ^ d7 ^ c4 ^ c26 ^ d27 ^ c27 ^
d8 ^ c10 ^ d14 ^ d24 ^ c29 ^ c7 ^ c22 ^ c24 ^ d10 ^ d29 ^
c8 ^ d26 ^ c23 ^ d4 ^ d22 ^ c30 ^ d23; // 26 ins 1 outs
assign x29 = c3 ^ d28 ^ c28 ^ c29 ^ c9 ^ d27 ^ d13 ^ d31 ^ c25 ^
d26 ^ c26 ^ c27 ^ d29 ^ c31 ^ d6 ^ d9 ^ c22 ^ c23 ^ d22 ^
d25 ^ d21 ^ c13 ^ c21 ^ d23 ^ c6 ^ d7 ^ d3 ^ c7; // 28 ins 1 outs
assign x28 = c2 ^ d27 ^ c27 ^ c28 ^ c8 ^ d24 ^ c24 ^ d25 ^ d28 ^
d21 ^ c25 ^ c26 ^ d8 ^ c30 ^ d12 ^ c21 ^ c22 ^ d22 ^ d6 ^
d5 ^ c6 ^ d26 ^ c20 ^ d30 ^ c12 ^ d20 ^ c5 ^ d2; // 28 ins 1 outs
assign x27 = c1 ^ c27 ^ c7 ^ d1 ^ d26 ^ d23 ^ c24 ^ c21 ^ c11 ^
d25 ^ d27 ^ d21 ^ d24 ^ d29 ^ d5 ^ c26 ^ d4 ^ d20 ^ c29 ^
d7 ^ d11 ^ c20 ^ c5 ^ c19 ^ c25 ^ d19 ^ c4 ^ c23; // 28 ins 1 outs
assign x26 = c0 ^ d24 ^ d31 ^ d10 ^ d25 ^ d3 ^ c23 ^ d4 ^ c24 ^
c25 ^ d20 ^ c26 ^ c3 ^ c20 ^ d28 ^ d23 ^ d19 ^ c6 ^ d0 ^
c28 ^ d26 ^ c10 ^ d18 ^ c18 ^ c4 ^ d22 ^ c22 ^ c19 ^ d6 ^
c31; // 30 ins 1 outs
assign x25 = d8 ^ d21 ^ d19 ^ c22 ^ c29 ^ d3 ^ d11 ^ c2 ^ c18 ^
c8 ^ d31 ^ c28 ^ d18 ^ c3 ^ d22 ^ d15 ^ c19 ^ d17 ^ c15 ^
d2 ^ c21 ^ d28 ^ d29 ^ c17 ^ c11 ^ c31; // 26 ins 1 outs
assign x24 = d7 ^ c7 ^ d27 ^ d20 ^ c20 ^ c18 ^ d18 ^ c28 ^ c27 ^
d30 ^ d17 ^ c1 ^ c17 ^ c2 ^ c21 ^ d16 ^ c10 ^ d2 ^ d10 ^
d1 ^ d21 ^ c14 ^ c16 ^ d14 ^ d28 ^ c30; // 26 ins 1 outs
assign x23 = d16 ^ c6 ^ d31 ^ c31 ^ d6 ^ d0 ^ d17 ^ c19 ^ c9 ^
d19 ^ c17 ^ c16 ^ d29 ^ c29 ^ d26 ^ d20 ^ c27 ^ c15 ^ d13 ^
c0 ^ c20 ^ d27 ^ d15 ^ d1 ^ c1 ^ c26 ^ c13 ^ d9; // 28 ins 1 outs
assign x22 = c0 ^ c26 ^ c24 ^ c31 ^ d16 ^ d27 ^ c27 ^ d23 ^ d24 ^
d0 ^ d29 ^ c16 ^ d18 ^ c14 ^ c18 ^ c9 ^ d19 ^ d31 ^ d12 ^
c19 ^ c11 ^ c29 ^ d26 ^ d14 ^ d9 ^ d11 ^ c12 ^ c23; // 28 ins 1 outs
assign x21 = d9 ^ d5 ^ c31 ^ c29 ^ c10 ^ d26 ^ d29 ^ d31 ^ c27 ^
d27 ^ d17 ^ c13 ^ c18 ^ c17 ^ d18 ^ c9 ^ c26 ^ c5 ^ d24 ^
c24 ^ d13 ^ d10 ^ d22 ^ c22; // 24 ins 1 outs
assign x20 = c16 ^ d8 ^ c4 ^ d4 ^ c25 ^ d17 ^ c17 ^ c9 ^ c30 ^
c8 ^ c26 ^ c28 ^ c12 ^ d16 ^ d26 ^ d28 ^ d9 ^ d23 ^ c23 ^
d30 ^ d12 ^ c21 ^ d21 ^ d25; // 24 ins 1 outs
assign x19 = d3 ^ c7 ^ c3 ^ c27 ^ c16 ^ d16 ^ c22 ^ d25 ^ c15 ^
d15 ^ c11 ^ c25 ^ c8 ^ d27 ^ d8 ^ d29 ^ d11 ^ c29 ^ d22 ^
d7 ^ c20 ^ d20 ^ d24 ^ c24; // 24 ins 1 outs
assign x18 = d28 ^ d14 ^ d2 ^ c6 ^ c15 ^ d6 ^ c26 ^ c7 ^ c14 ^
c10 ^ d24 ^ c21 ^ d19 ^ c24 ^ d31 ^ d26 ^ c28 ^ c2 ^ c23 ^
d10 ^ d7 ^ c19 ^ d21 ^ c31 ^ d15 ^ d23; // 26 ins 1 outs
assign x17 = c30 ^ d1 ^ c14 ^ c13 ^ c6 ^ c25 ^ d6 ^ c27 ^ c31 ^
c23 ^ d31 ^ d14 ^ d9 ^ d25 ^ c20 ^ c9 ^ d5 ^ d30 ^ d20 ^
d13 ^ d18 ^ c1 ^ d27 ^ d23 ^ c18 ^ c5 ^ c22 ^ d22; // 28 ins 1 outs
assign x16 = d29 ^ c30 ^ d30 ^ c5 ^ d4 ^ d12 ^ c21 ^ d8 ^ c22 ^
c29 ^ d5 ^ d22 ^ c8 ^ c12 ^ d13 ^ c26 ^ c24 ^ d26 ^ d24 ^
d17 ^ c19 ^ c17 ^ c0 ^ d19 ^ c4 ^ d21 ^ c13 ^ d0; // 28 ins 1 outs
assign x15 = d15 ^ c12 ^ d3 ^ c4 ^ d30 ^ c3 ^ c27 ^ d7 ^ d21 ^
d27 ^ d24 ^ c21 ^ d5 ^ c15 ^ c24 ^ d12 ^ d4 ^ c18 ^ d8 ^
d18 ^ c5 ^ c7 ^ c8 ^ c16 ^ d16 ^ d9 ^ c9 ^ d20 ^ c20 ^
c30; // 30 ins 1 outs
assign x14 = d14 ^ c14 ^ c11 ^ d2 ^ c3 ^ d8 ^ c26 ^ d26 ^ d20 ^
d6 ^ d23 ^ c20 ^ c6 ^ d19 ^ c17 ^ c8 ^ c23 ^ d4 ^ d11 ^
c2 ^ d7 ^ d17 ^ c4 ^ c29 ^ d3 ^ d15 ^ c19 ^ d29 ^ c7 ^
c15; // 30 ins 1 outs
assign x13 = c10 ^ d31 ^ c7 ^ d1 ^ c2 ^ d7 ^ c13 ^ d25 ^ d6 ^
c31 ^ c19 ^ d5 ^ c5 ^ d19 ^ d3 ^ d10 ^ c18 ^ c16 ^ c22 ^
c3 ^ d18 ^ c25 ^ d22 ^ c1 ^ c28 ^ d13 ^ d2 ^ c6 ^ c14 ^
d14 ^ d28 ^ d16; // 32 ins 1 outs
assign x12 = c6 ^ d9 ^ d12 ^ d31 ^ c31 ^ d6 ^ d0 ^ c1 ^ c27 ^
c12 ^ d30 ^ d5 ^ c17 ^ d4 ^ c4 ^ d2 ^ c9 ^ c30 ^ c24 ^
c21 ^ d21 ^ c5 ^ c2 ^ c13 ^ d15 ^ d24 ^ c18 ^ c0 ^ d17 ^
c15 ^ d18 ^ d1 ^ d13 ^ d27; // 34 ins 1 outs
assign x11 = c0 ^ d26 ^ c16 ^ d28 ^ d27 ^ d3 ^ c3 ^ d24 ^ c12 ^
d25 ^ d17 ^ d16 ^ c15 ^ c27 ^ d14 ^ c24 ^ c1 ^ c4 ^ d15 ^
d1 ^ c26 ^ d20 ^ c9 ^ c20 ^ d0 ^ c14 ^ c17 ^ c31 ^ d31 ^
d12 ^ d9 ^ c25 ^ d4 ^ c28; // 34 ins 1 outs
assign x10 = c9 ^ d14 ^ d2 ^ c3 ^ d9 ^ d26 ^ c2 ^ c5 ^ d0 ^
c31 ^ c19 ^ d3 ^ c0 ^ c13 ^ d16 ^ d31 ^ c28 ^ d13 ^ c26 ^
c14 ^ d5 ^ d29 ^ c29 ^ d28 ^ d19 ^ c16; // 26 ins 1 outs
assign x9 = d1 ^ c2 ^ c13 ^ c11 ^ c1 ^ d11 ^ d29 ^ d13 ^ c5 ^
c4 ^ d23 ^ d12 ^ c12 ^ c29 ^ c24 ^ c18 ^ d24 ^ d4 ^ c9 ^
c23 ^ d9 ^ d5 ^ d2 ^ d18; // 24 ins 1 outs
assign x8 = d12 ^ d31 ^ d0 ^ c28 ^ d28 ^ c11 ^ c12 ^ d10 ^ c10 ^
c0 ^ c31 ^ d11 ^ c23 ^ c1 ^ c4 ^ d23 ^ c22 ^ c8 ^ d22 ^
d8 ^ d3 ^ c3 ^ d1 ^ c17 ^ d4 ^ d17; // 26 ins 1 outs
assign x7 = c8 ^ c10 ^ d16 ^ d3 ^ c5 ^ d28 ^ d10 ^ c15 ^ c24 ^
c2 ^ c25 ^ c28 ^ d29 ^ c29 ^ d21 ^ d22 ^ c22 ^ c3 ^ c7 ^
c16 ^ d8 ^ c21 ^ d7 ^ c23 ^ d0 ^ d25 ^ d5 ^ d24 ^ d23 ^
c0 ^ d15 ^ d2; // 32 ins 1 outs
assign x6 = c7 ^ d1 ^ d14 ^ d2 ^ c4 ^ c29 ^ d30 ^ c1 ^ c30 ^
d25 ^ c5 ^ d20 ^ d5 ^ d21 ^ d7 ^ c2 ^ c6 ^ c14 ^ d6 ^
c11 ^ d29 ^ c25 ^ c20 ^ d22 ^ c22 ^ c21 ^ d8 ^ d4 ^ d11 ^
c8; // 30 ins 1 outs
assign x5 = d6 ^ d7 ^ d13 ^ c6 ^ c7 ^ c24 ^ d28 ^ c10 ^ d10 ^
d3 ^ d24 ^ d19 ^ c20 ^ c28 ^ d29 ^ c0 ^ c5 ^ d4 ^ c3 ^
d20 ^ c29 ^ d5 ^ c21 ^ c1 ^ d0 ^ c19 ^ d21 ^ c13 ^ d1 ^
c4; // 30 ins 1 outs
assign x4 = c12 ^ c29 ^ d12 ^ d31 ^ c31 ^ d6 ^ d29 ^ c11 ^ d2 ^
c30 ^ c2 ^ c6 ^ c15 ^ c19 ^ d15 ^ c18 ^ d3 ^ c4 ^ d19 ^
d30 ^ d0 ^ c3 ^ d18 ^ d8 ^ d4 ^ c24 ^ d24 ^ c0 ^ d11 ^
c20 ^ d20 ^ c8 ^ c25 ^ d25; // 34 ins 1 outs
assign x3 = c10 ^ d31 ^ c7 ^ d1 ^ c8 ^ d27 ^ d14 ^ c14 ^ d10 ^
d2 ^ c3 ^ d7 ^ d8 ^ d18 ^ c17 ^ d25 ^ c9 ^ c2 ^ d17 ^
d19 ^ c31 ^ c25 ^ d9 ^ c15 ^ c27 ^ c1 ^ c19 ^ d15 ^ c18 ^
d3; // 30 ins 1 outs
assign x2 = d16 ^ c6 ^ d31 ^ c31 ^ d6 ^ d0 ^ d17 ^ c9 ^ c7 ^
d1 ^ c2 ^ c30 ^ d7 ^ c17 ^ c1 ^ c26 ^ c8 ^ d13 ^ c16 ^
d18 ^ d9 ^ d8 ^ d30 ^ d24 ^ c18 ^ c24 ^ c13 ^ d26 ^ d14 ^
c14 ^ c0 ^ d2; // 32 ins 1 outs
assign x1 = d16 ^ c6 ^ d6 ^ d0 ^ c1 ^ c27 ^ c28 ^ d28 ^ c12 ^
c9 ^ c11 ^ d12 ^ d17 ^ c16 ^ c13 ^ c17 ^ d11 ^ d7 ^ c24 ^
d24 ^ c0 ^ d27 ^ d13 ^ d9 ^ c7 ^ d1; // 26 ins 1 outs
assign x0 = c0 ^ d24 ^ c10 ^ d26 ^ c24 ^ d30 ^ c16 ^ d28 ^ c26 ^
c30 ^ c9 ^ d25 ^ d10 ^ c12 ^ c29 ^ d29 ^ c28 ^ c25 ^ d16 ^
c6 ^ d9 ^ d12 ^ d31 ^ c31 ^ d6 ^ d0; // 26 ins 1 outs
endmodule
////////////////////////////////////////////////////////////////
// Depth optimal factored version
////////////////////////////////////////////////////////////////
module crc32_dat32_factor (crc_in,dat_in,crc_out);
input [31:0] crc_in;
input [31:0] dat_in;
output [31:0] crc_out;
wire [31:0] crc_out;
wire x631, x630, x629, x628, x627, x626, x625,
x624, x623, x622, x621, x620, x619, x618, x617,
x616, x615, x614, x613, x612, x611, x610, x609,
x608, x607, x606, x605, x604, x603, x602, x601,
x600, x599, x598, x597, x596, x595, x594, x593,
x592, x591, x590, x589, x588, x587, x586, x585,
x584, x583, x582, x581, x580, x579, x578, x577,
x576, x575, x574, x573, x572, x571, x570, x569,
x568, x567, x566, x565, x564, x563, x562, x561,
x560, x559, x558, x557, x556, x31, x30, x29,
x28, x27, x26, x25, x24, x23, x22, x21,
x20, x19, x18, x17, x16, x15, x14, x13,
x12, x11, x10, x9, x8, x7, x6, x5,
x4, x3, x2, x1, x0;
assign crc_out = {x31,x30,x29,x28,x27,x26,x25,x24,x23,x22,x21,x20,x19,x18,x17,
x16,x15,x14,x13,x12,x11,x10,x9,x8,x7,x6,x5,x4,x3,x2,x1,
x0};
wire d0,d1,d2,d3,d4,d5,d6,d7,d8,d9,d10,d11,d12,d13,d14,
d15,d16,d17,d18,d19,d20,d21,d22,d23,d24,d25,d26,d27,d28,d29,d30,
d31;
assign { d31,d30,d29,d28,d27,d26,d25,d24,d23,d22,d21,d20,d19,d18,d17,
d16,d15,d14,d13,d12,d11,d10,d9,d8,d7,d6,d5,d4,d3,d2,d1,
d0} = dat_in [31:0];
wire c0,c1,c2,c3,c4,c5,c6,c7,c8,c9,c10,c11,c12,c13,c14,
c15,c16,c17,c18,c19,c20,c21,c22,c23,c24,c25,c26,c27,c28,c29,c30,
c31;
assign { c31,c30,c29,c28,c27,c26,c25,c24,c23,c22,c21,c20,c19,c18,c17,
c16,c15,c14,c13,c12,c11,c10,c9,c8,c7,c6,c5,c4,c3,c2,c1,
c0} = crc_in [31:0];
xor6 x631i (.out(x631),.a(c9),.b(c28),.c(d9),.d(c1),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x630i (.out(x630),.a(c26),.b(d30),.c(d26),.d(c31),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x629i (.out(x629),.a(c19),.b(d19),.c(1'b0),.d(1'b0),.e(1'b0),.f(1'b0)); // 2 ins 1 outs
xor6 x628i (.out(x628),.a(d15),.b(d6),.c(c31),.d(c15),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x627i (.out(x627),.a(d21),.b(d10),.c(1'b0),.d(1'b0),.e(1'b0),.f(1'b0)); // 2 ins 1 outs
xor6 x626i (.out(x626),.a(c11),.b(d29),.c(1'b0),.d(1'b0),.e(1'b0),.f(1'b0)); // 2 ins 1 outs
xor6 x625i (.out(x625),.a(c2),.b(d16),.c(1'b0),.d(1'b0),.e(1'b0),.f(1'b0)); // 2 ins 1 outs
xor6 x624i (.out(x624),.a(d15),.b(d17),.c(c17),.d(c15),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x623i (.out(x623),.a(c16),.b(d16),.c(d22),.d(c31),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x622i (.out(x622),.a(c24),.b(c15),.c(c19),.d(d19),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x621i (.out(x621),.a(c16),.b(c26),.c(d26),.d(d16),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x620i (.out(x620),.a(c22),.b(c18),.c(d22),.d(c21),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x619i (.out(x619),.a(c19),.b(c30),.c(1'b0),.d(1'b0),.e(1'b0),.f(1'b0)); // 2 ins 1 outs
xor6 x618i (.out(x618),.a(d21),.b(d6),.c(c21),.d(d22),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x617i (.out(x617),.a(c11),.b(c16),.c(d11),.d(d21),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x616i (.out(x616),.a(c28),.b(d29),.c(c29),.d(d10),.e(d25),.f(c10)); // 6 ins 1 outs
xor6 x615i (.out(x615),.a(c14),.b(c0),.c(d14),.d(d2),.e(c2),.f(c22)); // 6 ins 1 outs
xor6 x614i (.out(x614),.a(d26),.b(d4),.c(c4),.d(c14),.e(d14),.f(c26)); // 6 ins 1 outs
xor6 x613i (.out(x613),.a(c3),.b(d3),.c(d26),.d(c26),.e(c20),.f(d20)); // 6 ins 1 outs
xor6 x612i (.out(x612),.a(c15),.b(d15),.c(d12),.d(d27),.e(c12),.f(c27)); // 6 ins 1 outs
xor6 x611i (.out(x611),.a(c19),.b(c22),.c(d19),.d(c17),.e(d17),.f(c21)); // 6 ins 1 outs
xor6 x610i (.out(x610),.a(d22),.b(c30),.c(c29),.d(d30),.e(c5),.f(d5)); // 6 ins 1 outs
xor6 x609i (.out(x609),.a(d3),.b(c3),.c(d16),.d(c24),.e(d24),.f(1'b0)); // 5 ins 1 outs
xor6 x608i (.out(x608),.a(c22),.b(c17),.c(c29),.d(d17),.e(d22),.f(c21)); // 6 ins 1 outs
xor6 x607i (.out(x607),.a(d6),.b(d0),.c(c6),.d(c0),.e(c19),.f(d19)); // 6 ins 1 outs
xor6 x606i (.out(x606),.a(d27),.b(d20),.c(c21),.d(c27),.e(d1),.f(c20)); // 6 ins 1 outs
xor6 x605i (.out(x605),.a(c1),.b(d1),.c(d4),.d(c4),.e(c6),.f(c28)); // 6 ins 1 outs
xor6 x604i (.out(x604),.a(c8),.b(d8),.c(c30),.d(d30),.e(d28),.f(d22)); // 6 ins 1 outs
xor6 x603i (.out(x603),.a(d28),.b(d29),.c(d24),.d(d14),.e(c14),.f(c24)); // 6 ins 1 outs
xor6 x602i (.out(x602),.a(d3),.b(c3),.c(c25),.d(c1),.e(d1),.f(d25)); // 6 ins 1 outs
xor6 x601i (.out(x601),.a(d29),.b(c19),.c(c10),.d(c7),.e(c31),.f(d7)); // 6 ins 1 outs
xor6 x600i (.out(x600),.a(c21),.b(d6),.c(d11),.d(c6),.e(d1),.f(c1)); // 6 ins 1 outs
xor6 x599i (.out(x599),.a(d0),.b(c7),.c(d21),.d(d7),.e(c0),.f(d2)); // 6 ins 1 outs
xor6 x598i (.out(x598),.a(c13),.b(d29),.c(c9),.d(d2),.e(c23),.f(d23)); // 6 ins 1 outs
xor6 x597i (.out(x597),.a(c12),.b(d9),.c(c9),.d(c26),.e(d12),.f(c1)); // 6 ins 1 outs
xor6 x596i (.out(x596),.a(d30),.b(d28),.c(c25),.d(c30),.e(1'b0),.f(1'b0)); // 4 ins 2 outs
xor6 x595i (.out(x595),.a(d24),.b(c30),.c(c24),.d(d18),.e(d0),.f(c18)); // 6 ins 2 outs
xor6 x594i (.out(x594),.a(d31),.b(c2),.c(d2),.d(c6),.e(d25),.f(c25)); // 6 ins 1 outs
xor6 x593i (.out(x593),.a(d21),.b(c5),.c(c30),.d(d2),.e(d5),.f(d30)); // 6 ins 1 outs
xor6 x592i (.out(x592),.a(d19),.b(c19),.c(c22),.d(c5),.e(d5),.f(d31)); // 6 ins 2 outs
xor6 x591i (.out(x591),.a(d25),.b(d15),.c(c10),.d(d28),.e(d10),.f(d24)); // 6 ins 1 outs
xor6 x590i (.out(x590),.a(c30),.b(d30),.c(d21),.d(c28),.e(1'b0),.f(1'b0)); // 4 ins 1 outs
xor6 x589i (.out(x589),.a(d18),.b(d2),.c(c2),.d(d31),.e(d0),.f(d21)); // 6 ins 1 outs
xor6 x588i (.out(x588),.a(c22),.b(d7),.c(c7),.d(c6),.e(c23),.f(d23)); // 6 ins 2 outs
xor6 x587i (.out(x587),.a(d21),.b(d7),.c(c29),.d(c7),.e(1'b0),.f(1'b0)); // 4 ins 2 outs
xor6 x586i (.out(x586),.a(d5),.b(c5),.c(d22),.d(d21),.e(1'b0),.f(1'b0)); // 4 ins 2 outs
xor6 x585i (.out(x585),.a(c6),.b(c4),.c(c23),.d(d23),.e(d4),.f(d6)); // 6 ins 1 outs
xor6 x584i (.out(x584),.a(d23),.b(c14),.c(d14),.d(d18),.e(c18),.f(c23)); // 6 ins 2 outs
xor6 x583i (.out(x583),.a(d7),.b(d11),.c(c11),.d(c7),.e(c27),.f(d27)); // 6 ins 2 outs
xor6 x582i (.out(x582),.a(d1),.b(c15),.c(c20),.d(d15),.e(d28),.f(d20)); // 6 ins 2 outs
xor6 x581i (.out(x581),.a(d12),.b(c12),.c(c2),.d(d6),.e(c6),.f(d2)); // 6 ins 1 outs
xor6 x580i (.out(x580),.a(c20),.b(c4),.c(d20),.d(d4),.e(d19),.f(c0)); // 6 ins 2 outs
xor6 x579i (.out(x579),.a(d1),.b(c1),.c(d12),.d(d11),.e(c11),.f(c12)); // 6 ins 2 outs
xor6 x578i (.out(x578),.a(c23),.b(d25),.c(d21),.d(d23),.e(c28),.f(c21)); // 6 ins 3 outs
xor6 x577i (.out(x577),.a(d18),.b(c10),.c(d10),.d(c18),.e(1'b0),.f(1'b0)); // 4 ins 4 outs
xor6 x576i (.out(x576),.a(c8),.b(d8),.c(c17),.d(d17),.e(d31),.f(c0)); // 6 ins 2 outs
xor6 x575i (.out(x575),.a(d29),.b(d15),.c(c16),.d(c8),.e(d8),.f(c15)); // 6 ins 3 outs
xor6 x574i (.out(x574),.a(d21),.b(c27),.c(d27),.d(c28),.e(c26),.f(d26)); // 6 ins 3 outs
xor6 x573i (.out(x573),.a(c16),.b(c9),.c(d9),.d(d16),.e(1'b0),.f(1'b0)); // 4 ins 4 outs
xor6 x572i (.out(x572),.a(c21),.b(d18),.c(c4),.d(c18),.e(c2),.f(d4)); // 6 ins 2 outs
xor6 x571i (.out(x571),.a(c28),.b(d28),.c(c31),.d(c3),.e(d3),.f(d0)); // 6 ins 4 outs
xor6 x570i (.out(x570),.a(c3),.b(d3),.c(c18),.d(d18),.e(c20),.f(d20)); // 6 ins 2 outs
xor6 x569i (.out(x569),.a(d26),.b(d31),.c(c26),.d(d6),.e(c6),.f(c31)); // 6 ins 3 outs
xor6 x568i (.out(x568),.a(c17),.b(c1),.c(c16),.d(d16),.e(d17),.f(d28)); // 6 ins 5 outs
xor6 x567i (.out(x567),.a(d15),.b(c8),.c(d8),.d(c15),.e(c17),.f(d17)); // 6 ins 3 outs
xor6 x566i (.out(x566),.a(c29),.b(c22),.c(c25),.d(c20),.e(d20),.f(d25)); // 6 ins 5 outs
xor6 x565i (.out(x565),.a(c13),.b(d13),.c(d6),.d(c6),.e(c1),.f(d1)); // 6 ins 6 outs
xor6 x564i (.out(x564),.a(c22),.b(d22),.c(d10),.d(c10),.e(d23),.f(c23)); // 6 ins 4 outs
xor6 x563i (.out(x563),.a(d29),.b(c26),.c(c13),.d(d13),.e(d26),.f(c29)); // 6 ins 5 outs
xor6 x562i (.out(x562),.a(d19),.b(d29),.c(c29),.d(d11),.e(c11),.f(c19)); // 6 ins 5 outs
xor6 x561i (.out(x561),.a(c21),.b(d5),.c(c29),.d(c5),.e(c24),.f(d24)); // 6 ins 8 outs
xor6 x560i (.out(x560),.a(d4),.b(c4),.c(c8),.d(d8),.e(c30),.f(d30)); // 6 ins 6 outs
xor6 x559i (.out(x559),.a(d28),.b(c28),.c(c25),.d(d25),.e(c3),.f(d3)); // 6 ins 5 outs
xor6 x558i (.out(x558),.a(d2),.b(c14),.c(d14),.d(c2),.e(c7),.f(d7)); // 6 ins 7 outs
xor6 x557i (.out(x557),.a(d0),.b(c24),.c(d24),.d(c0),.e(d12),.f(c12)); // 6 ins 7 outs
xor6 x556i (.out(x556),.a(d9),.b(c31),.c(c27),.d(c9),.e(d27),.f(d31)); // 6 ins 9 outs
xor6 x31i (.out(x31),.a(x617),.b(x575),.c(x596),.d(x578),.e(x561),.f(x556)); // 6 ins 1 outs
xor6 x30i (.out(x30),.a(x603),.b(x587),.c(x564),.d(x560),.e(x574),.f(1'b0)); // 5 ins 1 outs
xor6 x29i (.out(x29),.a(x618),.b(x563),.c(x588),.d(x559),.e(x556),.f(1'b0)); // 5 ins 1 outs
xor6 x28i (.out(x28),.a(x581),.b(x561),.c(x574),.d(x604),.e(x566),.f(1'b0)); // 5 ins 1 outs
xor6 x27i (.out(x27),.a(x605),.b(x561),.c(x574),.d(x588),.e(x562),.f(x566)); // 6 ins 1 outs
xor6 x26i (.out(x26),.a(x619),.b(x595),.c(x559),.d(x580),.e(x569),.f(x564)); // 6 ins 1 outs
xor6 x25i (.out(x25),.a(x571),.b(x589),.c(x620),.d(x562),.e(x567),.f(1'b0)); // 5 ins 1 outs
xor6 x24i (.out(x24),.a(x590),.b(x577),.c(x606),.d(x568),.e(x558),.f(1'b0)); // 5 ins 1 outs
xor6 x23i (.out(x23),.a(x607),.b(x563),.c(x582),.d(x568),.e(x556),.f(1'b0)); // 5 ins 1 outs
xor6 x22i (.out(x22),.a(x621),.b(x562),.c(x584),.d(x557),.e(x556),.f(1'b0)); // 5 ins 1 outs
xor6 x21i (.out(x21),.a(x608),.b(x563),.c(x561),.d(x577),.e(x556),.f(1'b0)); // 5 ins 1 outs
xor6 x20i (.out(x20),.a(c25),.b(x597),.c(d26),.d(x568),.e(x578),.f(x560)); // 6 ins 1 outs
xor6 x19i (.out(x19),.a(d22),.b(x609),.c(x566),.d(x583),.e(x575),.f(1'b0)); // 5 ins 1 outs
xor6 x18i (.out(x18),.a(x591),.b(x578),.c(x622),.d(x558),.e(x569),.f(1'b0)); // 5 ins 1 outs
xor6 x17i (.out(x17),.a(x610),.b(x566),.c(x584),.d(x565),.e(x556),.f(1'b0)); // 5 ins 1 outs
xor6 x16i (.out(x16),.a(x611),.b(x586),.c(x563),.d(x560),.e(x557),.f(1'b0)); // 5 ins 1 outs
xor6 x15i (.out(x15),.a(x612),.b(x573),.c(x587),.d(x570),.e(x561),.f(x560)); // 6 ins 1 outs
xor6 x14i (.out(x14),.a(x585),.b(x562),.c(x613),.d(x567),.e(x558),.f(1'b0)); // 5 ins 1 outs
xor6 x13i (.out(x13),.a(x623),.b(x577),.c(x565),.d(x592),.e(x559),.f(x558)); // 6 ins 1 outs
xor6 x12i (.out(x12),.a(x593),.b(x624),.c(x557),.d(x556),.e(x565),.f(x572)); // 6 ins 1 outs
xor6 x11i (.out(x11),.a(x614),.b(x559),.c(x582),.d(x568),.e(x557),.f(x556)); // 6 ins 1 outs
xor6 x10i (.out(x10),.a(x615),.b(x592),.c(x573),.d(x563),.e(x571),.f(1'b0)); // 5 ins 1 outs
xor6 x9i (.out(x9),.a(x598),.b(d9),.c(d13),.d(x579),.e(x572),.f(x561)); // 6 ins 1 outs
xor6 x8i (.out(x8),.a(c4),.b(x579),.c(d4),.d(x576),.e(x564),.f(x571)); // 6 ins 1 outs
xor6 x7i (.out(x7),.a(x599),.b(x625),.c(x559),.d(x561),.e(x564),.f(x575)); // 6 ins 1 outs
xor6 x6i (.out(x6),.a(x600),.b(x626),.c(x558),.d(x586),.e(x560),.f(x566)); // 6 ins 1 outs
xor6 x5i (.out(x5),.a(x601),.b(x627),.c(x571),.d(x561),.e(x565),.f(x580)); // 6 ins 1 outs
xor6 x4i (.out(x4),.a(x594),.b(x628),.c(x560),.d(x557),.e(x562),.f(x570)); // 6 ins 1 outs
xor6 x3i (.out(x3),.a(x602),.b(x577),.c(x629),.d(x556),.e(x558),.f(x567)); // 6 ins 1 outs
xor6 x2i (.out(x2),.a(x630),.b(x573),.c(x558),.d(x576),.e(x595),.f(x565)); // 6 ins 1 outs
xor6 x1i (.out(x1),.a(x631),.b(x568),.c(x565),.d(x557),.e(x583),.f(1'b0)); // 5 ins 1 outs
xor6 x0i (.out(x0),.a(x616),.b(x573),.c(x596),.d(x569),.e(x557),.f(1'b0)); // 5 ins 1 outs
endmodule
Reference in New Issue Copy Permalink