corundum/rtl/eth_crc_48.v

/*

Copyright (c) 2014-2015 Alex Forencich

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.

*/

// Language: Verilog 2001

`timescale 1ns / 1ps

/*
 * CRC module eth_crc_48
 *
 * CRC width:      32
 * Data width:     48
 * CRC polynomial: 32'h4c11db7
 * Configuration:  galois
 * Bit-reverse:    input and output
 *
 * x^32 + 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
 *
 * Generated by crcgen.py
 *
 * crcgen.py -b -r -d 48 -n eth_crc_48
 *
 */
module eth_crc_48
(
    input  wire [47:0] data_in,
    input  wire [31:0] crc_state,
    output wire [31:0] crc_next
);

assign crc_next[0] = crc_state[0] ^ crc_state[1] ^ crc_state[3] ^ crc_state[4] ^ crc_state[11] ^ crc_state[14] ^ crc_state[16] ^ crc_state[17] ^ crc_state[18] ^ crc_state[19] ^ crc_state[20] ^ crc_state[22] ^ crc_state[23] ^ crc_state[24] ^ data_in[0] ^ data_in[1] ^ data_in[3] ^ data_in[4] ^ data_in[11] ^ data_in[14] ^ data_in[16] ^ data_in[17] ^ data_in[18] ^ data_in[19] ^ data_in[20] ^ data_in[22] ^ data_in[23] ^ data_in[24] ^ data_in[32] ^ data_in[36] ^ data_in[38] ^ data_in[39] ^ data_in[42];
assign crc_next[1] = crc_state[1] ^ crc_state[2] ^ crc_state[4] ^ crc_state[5] ^ crc_state[12] ^ crc_state[15] ^ crc_state[17] ^ crc_state[18] ^ crc_state[19] ^ crc_state[20] ^ crc_state[21] ^ crc_state[23] ^ crc_state[24] ^ crc_state[25] ^ data_in[1] ^ data_in[2] ^ data_in[4] ^ data_in[5] ^ data_in[12] ^ data_in[15] ^ data_in[17] ^ data_in[18] ^ data_in[19] ^ data_in[20] ^ data_in[21] ^ data_in[23] ^ data_in[24] ^ data_in[25] ^ data_in[33] ^ data_in[37] ^ data_in[39] ^ data_in[40] ^ data_in[43];
assign crc_next[2] = crc_state[0] ^ crc_state[2] ^ crc_state[3] ^ crc_state[5] ^ crc_state[6] ^ crc_state[13] ^ crc_state[16] ^ crc_state[18] ^ crc_state[19] ^ crc_state[20] ^ crc_state[21] ^ crc_state[22] ^ crc_state[24] ^ crc_state[25] ^ crc_state[26] ^ data_in[0] ^ data_in[2] ^ data_in[3] ^ data_in[5] ^ data_in[6] ^ data_in[13] ^ data_in[16] ^ data_in[18] ^ data_in[19] ^ data_in[20] ^ data_in[21] ^ data_in[22] ^ data_in[24] ^ data_in[25] ^ data_in[26] ^ data_in[34] ^ data_in[38] ^ data_in[40] ^ data_in[41] ^ data_in[44];
assign crc_next[3] = crc_state[1] ^ crc_state[3] ^ crc_state[4] ^ crc_state[6] ^ crc_state[7] ^ crc_state[14] ^ crc_state[17] ^ crc_state[19] ^ crc_state[20] ^ crc_state[21] ^ crc_state[22] ^ crc_state[23] ^ crc_state[25] ^ crc_state[26] ^ crc_state[27] ^ data_in[1] ^ data_in[3] ^ data_in[4] ^ data_in[6] ^ data_in[7] ^ data_in[14] ^ data_in[17] ^ data_in[19] ^ data_in[20] ^ data_in[21] ^ data_in[22] ^ data_in[23] ^ data_in[25] ^ data_in[26] ^ data_in[27] ^ data_in[35] ^ data_in[39] ^ data_in[41] ^ data_in[42] ^ data_in[45];
assign crc_next[4] = crc_state[2] ^ crc_state[4] ^ crc_state[5] ^ crc_state[7] ^ crc_state[8] ^ crc_state[15] ^ crc_state[18] ^ crc_state[20] ^ crc_state[21] ^ crc_state[22] ^ crc_state[23] ^ crc_state[24] ^ crc_state[26] ^ crc_state[27] ^ crc_state[28] ^ data_in[2] ^ data_in[4] ^ data_in[5] ^ data_in[7] ^ data_in[8] ^ data_in[15] ^ data_in[18] ^ data_in[20] ^ data_in[21] ^ data_in[22] ^ data_in[23] ^ data_in[24] ^ data_in[26] ^ data_in[27] ^ data_in[28] ^ data_in[36] ^ data_in[40] ^ data_in[42] ^ data_in[43] ^ data_in[46];
assign crc_next[5] = crc_state[0] ^ crc_state[3] ^ crc_state[5] ^ crc_state[6] ^ crc_state[8] ^ crc_state[9] ^ crc_state[16] ^ crc_state[19] ^ crc_state[21] ^ crc_state[22] ^ crc_state[23] ^ crc_state[24] ^ crc_state[25] ^ crc_state[27] ^ crc_state[28] ^ crc_state[29] ^ data_in[0] ^ data_in[3] ^ data_in[5] ^ data_in[6] ^ data_in[8] ^ data_in[9] ^ data_in[16] ^ data_in[19] ^ data_in[21] ^ data_in[22] ^ data_in[23] ^ data_in[24] ^ data_in[25] ^ data_in[27] ^ data_in[28] ^ data_in[29] ^ data_in[37] ^ data_in[41] ^ data_in[43] ^ data_in[44] ^ data_in[47];
assign crc_next[6] = crc_state[3] ^ crc_state[6] ^ crc_state[7] ^ crc_state[9] ^ crc_state[10] ^ crc_state[11] ^ crc_state[14] ^ crc_state[16] ^ crc_state[18] ^ crc_state[19] ^ crc_state[25] ^ crc_state[26] ^ crc_state[28] ^ crc_state[29] ^ crc_state[30] ^ data_in[3] ^ data_in[6] ^ data_in[7] ^ data_in[9] ^ data_in[10] ^ data_in[11] ^ data_in[14] ^ data_in[16] ^ data_in[18] ^ data_in[19] ^ data_in[25] ^ data_in[26] ^ data_in[28] ^ data_in[29] ^ data_in[30] ^ data_in[32] ^ data_in[36] ^ data_in[39] ^ data_in[44] ^ data_in[45];
assign crc_next[7] = crc_state[0] ^ crc_state[4] ^ crc_state[7] ^ crc_state[8] ^ crc_state[10] ^ crc_state[11] ^ crc_state[12] ^ crc_state[15] ^ crc_state[17] ^ crc_state[19] ^ crc_state[20] ^ crc_state[26] ^ crc_state[27] ^ crc_state[29] ^ crc_state[30] ^ crc_state[31] ^ data_in[0] ^ data_in[4] ^ data_in[7] ^ data_in[8] ^ data_in[10] ^ data_in[11] ^ data_in[12] ^ data_in[15] ^ data_in[17] ^ data_in[19] ^ data_in[20] ^ data_in[26] ^ data_in[27] ^ data_in[29] ^ data_in[30] ^ data_in[31] ^ data_in[33] ^ data_in[37] ^ data_in[40] ^ data_in[45] ^ data_in[46];
assign crc_next[8] = crc_state[0] ^ crc_state[1] ^ crc_state[5] ^ crc_state[8] ^ crc_state[9] ^ crc_state[11] ^ crc_state[12] ^ crc_state[13] ^ crc_state[16] ^ crc_state[18] ^ crc_state[20] ^ crc_state[21] ^ crc_state[27] ^ crc_state[28] ^ crc_state[30] ^ crc_state[31] ^ data_in[0] ^ data_in[1] ^ data_in[5] ^ data_in[8] ^ data_in[9] ^ data_in[11] ^ data_in[12] ^ data_in[13] ^ data_in[16] ^ data_in[18] ^ data_in[20] ^ data_in[21] ^ data_in[27] ^ data_in[28] ^ data_in[30] ^ data_in[31] ^ data_in[32] ^ data_in[34] ^ data_in[38] ^ data_in[41] ^ data_in[46] ^ data_in[47];
assign crc_next[9] = crc_state[0] ^ crc_state[2] ^ crc_state[3] ^ crc_state[4] ^ crc_state[6] ^ crc_state[9] ^ crc_state[10] ^ crc_state[11] ^ crc_state[12] ^ crc_state[13] ^ crc_state[16] ^ crc_state[18] ^ crc_state[20] ^ crc_state[21] ^ crc_state[23] ^ crc_state[24] ^ crc_state[28] ^ crc_state[29] ^ crc_state[31] ^ data_in[0] ^ data_in[2] ^ data_in[3] ^ data_in[4] ^ data_in[6] ^ data_in[9] ^ data_in[10] ^ data_in[11] ^ data_in[12] ^ data_in[13] ^ data_in[16] ^ data_in[18] ^ data_in[20] ^ data_in[21] ^ data_in[23] ^ data_in[24] ^ data_in[28] ^ data_in[29] ^ data_in[31] ^ data_in[33] ^ data_in[35] ^ data_in[36] ^ data_in[38] ^ data_in[47];
assign crc_next[10] = crc_state[5] ^ crc_state[7] ^ crc_state[10] ^ crc_state[12] ^ crc_state[13] ^ crc_state[16] ^ crc_state[18] ^ crc_state[20] ^ crc_state[21] ^ crc_state[23] ^ crc_state[25] ^ crc_state[29] ^ crc_state[30] ^ data_in[5] ^ data_in[7] ^ data_in[10] ^ data_in[12] ^ data_in[13] ^ data_in[16] ^ data_in[18] ^ data_in[20] ^ data_in[21] ^ data_in[23] ^ data_in[25] ^ data_in[29] ^ data_in[30] ^ data_in[34] ^ data_in[37] ^ data_in[38] ^ data_in[42];
assign crc_next[11] = crc_state[6] ^ crc_state[8] ^ crc_state[11] ^ crc_state[13] ^ crc_state[14] ^ crc_state[17] ^ crc_state[19] ^ crc_state[21] ^ crc_state[22] ^ crc_state[24] ^ crc_state[26] ^ crc_state[30] ^ crc_state[31] ^ data_in[6] ^ data_in[8] ^ data_in[11] ^ data_in[13] ^ data_in[14] ^ data_in[17] ^ data_in[19] ^ data_in[21] ^ data_in[22] ^ data_in[24] ^ data_in[26] ^ data_in[30] ^ data_in[31] ^ data_in[35] ^ data_in[38] ^ data_in[39] ^ data_in[43];
assign crc_next[12] = crc_state[0] ^ crc_state[7] ^ crc_state[9] ^ crc_state[12] ^ crc_state[14] ^ crc_state[15] ^ crc_state[18] ^ crc_state[20] ^ crc_state[22] ^ crc_state[23] ^ crc_state[25] ^ crc_state[27] ^ crc_state[31] ^ data_in[0] ^ data_in[7] ^ data_in[9] ^ data_in[12] ^ data_in[14] ^ data_in[15] ^ data_in[18] ^ data_in[20] ^ data_in[22] ^ data_in[23] ^ data_in[25] ^ data_in[27] ^ data_in[31] ^ data_in[32] ^ data_in[36] ^ data_in[39] ^ data_in[40] ^ data_in[44];
assign crc_next[13] = crc_state[1] ^ crc_state[8] ^ crc_state[10] ^ crc_state[13] ^ crc_state[15] ^ crc_state[16] ^ crc_state[19] ^ crc_state[21] ^ crc_state[23] ^ crc_state[24] ^ crc_state[26] ^ crc_state[28] ^ data_in[1] ^ data_in[8] ^ data_in[10] ^ data_in[13] ^ data_in[15] ^ data_in[16] ^ data_in[19] ^ data_in[21] ^ data_in[23] ^ data_in[24] ^ data_in[26] ^ data_in[28] ^ data_in[32] ^ data_in[33] ^ data_in[37] ^ data_in[40] ^ data_in[41] ^ data_in[45];
assign crc_next[14] = crc_state[0] ^ crc_state[2] ^ crc_state[9] ^ crc_state[11] ^ crc_state[14] ^ crc_state[16] ^ crc_state[17] ^ crc_state[20] ^ crc_state[22] ^ crc_state[24] ^ crc_state[25] ^ crc_state[27] ^ crc_state[29] ^ data_in[0] ^ data_in[2] ^ data_in[9] ^ data_in[11] ^ data_in[14] ^ data_in[16] ^ data_in[17] ^ data_in[20] ^ data_in[22] ^ data_in[24] ^ data_in[25] ^ data_in[27] ^ data_in[29] ^ data_in[33] ^ data_in[34] ^ data_in[38] ^ data_in[41] ^ data_in[42] ^ data_in[46];
assign crc_next[15] = crc_state[0] ^ crc_state[1] ^ crc_state[3] ^ crc_state[10] ^ crc_state[12] ^ crc_state[15] ^ crc_state[17] ^ crc_state[18] ^ crc_state[21] ^ crc_state[23] ^ crc_state[25] ^ crc_state[26] ^ crc_state[28] ^ crc_state[30] ^ data_in[0] ^ data_in[1] ^ data_in[3] ^ data_in[10] ^ data_in[12] ^ data_in[15] ^ data_in[17] ^ data_in[18] ^ data_in[21] ^ data_in[23] ^ data_in[25] ^ data_in[26] ^ data_in[28] ^ data_in[30] ^ data_in[34] ^ data_in[35] ^ data_in[39] ^ data_in[42] ^ data_in[43] ^ data_in[47];
assign crc_next[16] = crc_state[2] ^ crc_state[3] ^ crc_state[13] ^ crc_state[14] ^ crc_state[17] ^ crc_state[20] ^ crc_state[23] ^ crc_state[26] ^ crc_state[27] ^ crc_state[29] ^ crc_state[31] ^ data_in[2] ^ data_in[3] ^ data_in[13] ^ data_in[14] ^ data_in[17] ^ data_in[20] ^ data_in[23] ^ data_in[26] ^ data_in[27] ^ data_in[29] ^ data_in[31] ^ data_in[32] ^ data_in[35] ^ data_in[38] ^ data_in[39] ^ data_in[40] ^ data_in[42] ^ data_in[43] ^ data_in[44];
assign crc_next[17] = crc_state[3] ^ crc_state[4] ^ crc_state[14] ^ crc_state[15] ^ crc_state[18] ^ crc_state[21] ^ crc_state[24] ^ crc_state[27] ^ crc_state[28] ^ crc_state[30] ^ data_in[3] ^ data_in[4] ^ data_in[14] ^ data_in[15] ^ data_in[18] ^ data_in[21] ^ data_in[24] ^ data_in[27] ^ data_in[28] ^ data_in[30] ^ data_in[32] ^ data_in[33] ^ data_in[36] ^ data_in[39] ^ data_in[40] ^ data_in[41] ^ data_in[43] ^ data_in[44] ^ data_in[45];
assign crc_next[18] = crc_state[0] ^ crc_state[4] ^ crc_state[5] ^ crc_state[15] ^ crc_state[16] ^ crc_state[19] ^ crc_state[22] ^ crc_state[25] ^ crc_state[28] ^ crc_state[29] ^ crc_state[31] ^ data_in[0] ^ data_in[4] ^ data_in[5] ^ data_in[15] ^ data_in[16] ^ data_in[19] ^ data_in[22] ^ data_in[25] ^ data_in[28] ^ data_in[29] ^ data_in[31] ^ data_in[33] ^ data_in[34] ^ data_in[37] ^ data_in[40] ^ data_in[41] ^ data_in[42] ^ data_in[44] ^ data_in[45] ^ data_in[46];
assign crc_next[19] = crc_state[0] ^ crc_state[1] ^ crc_state[5] ^ crc_state[6] ^ crc_state[16] ^ crc_state[17] ^ crc_state[20] ^ crc_state[23] ^ crc_state[26] ^ crc_state[29] ^ crc_state[30] ^ data_in[0] ^ data_in[1] ^ data_in[5] ^ data_in[6] ^ data_in[16] ^ data_in[17] ^ data_in[20] ^ data_in[23] ^ data_in[26] ^ data_in[29] ^ data_in[30] ^ data_in[32] ^ data_in[34] ^ data_in[35] ^ data_in[38] ^ data_in[41] ^ data_in[42] ^ data_in[43] ^ data_in[45] ^ data_in[46] ^ data_in[47];
assign crc_next[20] = crc_state[0] ^ crc_state[2] ^ crc_state[3] ^ crc_state[4] ^ crc_state[6] ^ crc_state[7] ^ crc_state[11] ^ crc_state[14] ^ crc_state[16] ^ crc_state[19] ^ crc_state[20] ^ crc_state[21] ^ crc_state[22] ^ crc_state[23] ^ crc_state[27] ^ crc_state[30] ^ crc_state[31] ^ data_in[0] ^ data_in[2] ^ data_in[3] ^ data_in[4] ^ data_in[6] ^ data_in[7] ^ data_in[11] ^ data_in[14] ^ data_in[16] ^ data_in[19] ^ data_in[20] ^ data_in[21] ^ data_in[22] ^ data_in[23] ^ data_in[27] ^ data_in[30] ^ data_in[31] ^ data_in[32] ^ data_in[33] ^ data_in[35] ^ data_in[38] ^ data_in[43] ^ data_in[44] ^ data_in[46] ^ data_in[47];
assign crc_next[21] = crc_state[5] ^ crc_state[7] ^ crc_state[8] ^ crc_state[11] ^ crc_state[12] ^ crc_state[14] ^ crc_state[15] ^ crc_state[16] ^ crc_state[18] ^ crc_state[19] ^ crc_state[21] ^ crc_state[28] ^ crc_state[31] ^ data_in[5] ^ data_in[7] ^ data_in[8] ^ data_in[11] ^ data_in[12] ^ data_in[14] ^ data_in[15] ^ data_in[16] ^ data_in[18] ^ data_in[19] ^ data_in[21] ^ data_in[28] ^ data_in[31] ^ data_in[33] ^ data_in[34] ^ data_in[38] ^ data_in[42] ^ data_in[44] ^ data_in[45] ^ data_in[47];
assign crc_next[22] = crc_state[0] ^ crc_state[1] ^ crc_state[3] ^ crc_state[4] ^ crc_state[6] ^ crc_state[8] ^ crc_state[9] ^ crc_state[11] ^ crc_state[12] ^ crc_state[13] ^ crc_state[14] ^ crc_state[15] ^ crc_state[18] ^ crc_state[23] ^ crc_state[24] ^ crc_state[29] ^ data_in[0] ^ data_in[1] ^ data_in[3] ^ data_in[4] ^ data_in[6] ^ data_in[8] ^ data_in[9] ^ data_in[11] ^ data_in[12] ^ data_in[13] ^ data_in[14] ^ data_in[15] ^ data_in[18] ^ data_in[23] ^ data_in[24] ^ data_in[29] ^ data_in[34] ^ data_in[35] ^ data_in[36] ^ data_in[38] ^ data_in[42] ^ data_in[43] ^ data_in[45] ^ data_in[46];
assign crc_next[23] = crc_state[1] ^ crc_state[2] ^ crc_state[4] ^ crc_state[5] ^ crc_state[7] ^ crc_state[9] ^ crc_state[10] ^ crc_state[12] ^ crc_state[13] ^ crc_state[14] ^ crc_state[15] ^ crc_state[16] ^ crc_state[19] ^ crc_state[24] ^ crc_state[25] ^ crc_state[30] ^ data_in[1] ^ data_in[2] ^ data_in[4] ^ data_in[5] ^ data_in[7] ^ data_in[9] ^ data_in[10] ^ data_in[12] ^ data_in[13] ^ data_in[14] ^ data_in[15] ^ data_in[16] ^ data_in[19] ^ data_in[24] ^ data_in[25] ^ data_in[30] ^ data_in[35] ^ data_in[36] ^ data_in[37] ^ data_in[39] ^ data_in[43] ^ data_in[44] ^ data_in[46] ^ data_in[47];
assign crc_next[24] = crc_state[0] ^ crc_state[1] ^ crc_state[2] ^ crc_state[4] ^ crc_state[5] ^ crc_state[6] ^ crc_state[8] ^ crc_state[10] ^ crc_state[13] ^ crc_state[15] ^ crc_state[18] ^ crc_state[19] ^ crc_state[22] ^ crc_state[23] ^ crc_state[24] ^ crc_state[25] ^ crc_state[26] ^ crc_state[31] ^ data_in[0] ^ data_in[1] ^ data_in[2] ^ data_in[4] ^ data_in[5] ^ data_in[6] ^ data_in[8] ^ data_in[10] ^ data_in[13] ^ data_in[15] ^ data_in[18] ^ data_in[19] ^ data_in[22] ^ data_in[23] ^ data_in[24] ^ data_in[25] ^ data_in[26] ^ data_in[31] ^ data_in[32] ^ data_in[37] ^ data_in[39] ^ data_in[40] ^ data_in[42] ^ data_in[44] ^ data_in[45] ^ data_in[47];
assign crc_next[25] = crc_state[0] ^ crc_state[2] ^ crc_state[4] ^ crc_state[5] ^ crc_state[6] ^ crc_state[7] ^ crc_state[9] ^ crc_state[17] ^ crc_state[18] ^ crc_state[22] ^ crc_state[25] ^ crc_state[26] ^ crc_state[27] ^ data_in[0] ^ data_in[2] ^ data_in[4] ^ data_in[5] ^ data_in[6] ^ data_in[7] ^ data_in[9] ^ data_in[17] ^ data_in[18] ^ data_in[22] ^ data_in[25] ^ data_in[26] ^ data_in[27] ^ data_in[33] ^ data_in[36] ^ data_in[39] ^ data_in[40] ^ data_in[41] ^ data_in[42] ^ data_in[43] ^ data_in[45] ^ data_in[46];
assign crc_next[26] = crc_state[1] ^ crc_state[3] ^ crc_state[5] ^ crc_state[6] ^ crc_state[7] ^ crc_state[8] ^ crc_state[10] ^ crc_state[18] ^ crc_state[19] ^ crc_state[23] ^ crc_state[26] ^ crc_state[27] ^ crc_state[28] ^ data_in[1] ^ data_in[3] ^ data_in[5] ^ data_in[6] ^ data_in[7] ^ data_in[8] ^ data_in[10] ^ data_in[18] ^ data_in[19] ^ data_in[23] ^ data_in[26] ^ data_in[27] ^ data_in[28] ^ data_in[34] ^ data_in[37] ^ data_in[40] ^ data_in[41] ^ data_in[42] ^ data_in[43] ^ data_in[44] ^ data_in[46] ^ data_in[47];
assign crc_next[27] = crc_state[0] ^ crc_state[1] ^ crc_state[2] ^ crc_state[3] ^ crc_state[6] ^ crc_state[7] ^ crc_state[8] ^ crc_state[9] ^ crc_state[14] ^ crc_state[16] ^ crc_state[17] ^ crc_state[18] ^ crc_state[22] ^ crc_state[23] ^ crc_state[27] ^ crc_state[28] ^ crc_state[29] ^ data_in[0] ^ data_in[1] ^ data_in[2] ^ data_in[3] ^ data_in[6] ^ data_in[7] ^ data_in[8] ^ data_in[9] ^ data_in[14] ^ data_in[16] ^ data_in[17] ^ data_in[18] ^ data_in[22] ^ data_in[23] ^ data_in[27] ^ data_in[28] ^ data_in[29] ^ data_in[32] ^ data_in[35] ^ data_in[36] ^ data_in[39] ^ data_in[41] ^ data_in[43] ^ data_in[44] ^ data_in[45] ^ data_in[47];
assign crc_next[28] = crc_state[2] ^ crc_state[7] ^ crc_state[8] ^ crc_state[9] ^ crc_state[10] ^ crc_state[11] ^ crc_state[14] ^ crc_state[15] ^ crc_state[16] ^ crc_state[20] ^ crc_state[22] ^ crc_state[28] ^ crc_state[29] ^ crc_state[30] ^ data_in[2] ^ data_in[7] ^ data_in[8] ^ data_in[9] ^ data_in[10] ^ data_in[11] ^ data_in[14] ^ data_in[15] ^ data_in[16] ^ data_in[20] ^ data_in[22] ^ data_in[28] ^ data_in[29] ^ data_in[30] ^ data_in[32] ^ data_in[33] ^ data_in[37] ^ data_in[38] ^ data_in[39] ^ data_in[40] ^ data_in[44] ^ data_in[45] ^ data_in[46];
assign crc_next[29] = crc_state[3] ^ crc_state[8] ^ crc_state[9] ^ crc_state[10] ^ crc_state[11] ^ crc_state[12] ^ crc_state[15] ^ crc_state[16] ^ crc_state[17] ^ crc_state[21] ^ crc_state[23] ^ crc_state[29] ^ crc_state[30] ^ crc_state[31] ^ data_in[3] ^ data_in[8] ^ data_in[9] ^ data_in[10] ^ data_in[11] ^ data_in[12] ^ data_in[15] ^ data_in[16] ^ data_in[17] ^ data_in[21] ^ data_in[23] ^ data_in[29] ^ data_in[30] ^ data_in[31] ^ data_in[33] ^ data_in[34] ^ data_in[38] ^ data_in[39] ^ data_in[40] ^ data_in[41] ^ data_in[45] ^ data_in[46] ^ data_in[47];
assign crc_next[30] = crc_state[0] ^ crc_state[1] ^ crc_state[3] ^ crc_state[9] ^ crc_state[10] ^ crc_state[12] ^ crc_state[13] ^ crc_state[14] ^ crc_state[19] ^ crc_state[20] ^ crc_state[23] ^ crc_state[30] ^ crc_state[31] ^ data_in[0] ^ data_in[1] ^ data_in[3] ^ data_in[9] ^ data_in[10] ^ data_in[12] ^ data_in[13] ^ data_in[14] ^ data_in[19] ^ data_in[20] ^ data_in[23] ^ data_in[30] ^ data_in[31] ^ data_in[34] ^ data_in[35] ^ data_in[36] ^ data_in[38] ^ data_in[40] ^ data_in[41] ^ data_in[46] ^ data_in[47];
assign crc_next[31] = crc_state[0] ^ crc_state[2] ^ crc_state[3] ^ crc_state[10] ^ crc_state[13] ^ crc_state[15] ^ crc_state[16] ^ crc_state[17] ^ crc_state[18] ^ crc_state[19] ^ crc_state[21] ^ crc_state[22] ^ crc_state[23] ^ crc_state[31] ^ data_in[0] ^ data_in[2] ^ data_in[3] ^ data_in[10] ^ data_in[13] ^ data_in[15] ^ data_in[16] ^ data_in[17] ^ data_in[18] ^ data_in[19] ^ data_in[21] ^ data_in[22] ^ data_in[23] ^ data_in[31] ^ data_in[35] ^ data_in[37] ^ data_in[38] ^ data_in[41] ^ data_in[47];

endmodule