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Diffstat (limited to 'fpga/usrp3/lib/xge/rtl/verilog/CRC32_D8.v')
| -rw-r--r-- | fpga/usrp3/lib/xge/rtl/verilog/CRC32_D8.v | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/fpga/usrp3/lib/xge/rtl/verilog/CRC32_D8.v b/fpga/usrp3/lib/xge/rtl/verilog/CRC32_D8.v new file mode 100644 index 000000000..814648684 --- /dev/null +++ b/fpga/usrp3/lib/xge/rtl/verilog/CRC32_D8.v @@ -0,0 +1,101 @@ +/////////////////////////////////////////////////////////////////////// +// File: CRC32_D8.v +// Date: Fri Feb 8 19:26:59 2008 +// +// Copyright (C) 1999-2003 Easics NV. +// 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 PROVIDED "AS IS" AND WITHOUT ANY EXPRESS +// OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED +// WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. +// +// Purpose: Verilog module containing a synthesizable CRC function +// * polynomial: (0 1 2 4 5 7 8 10 11 12 16 22 23 26 32) +// * data width: 8 +// +// Info: tools@easics.be +// http://www.easics.com +/////////////////////////////////////////////////////////////////////// + + +//module CRC32_D8; + + // polynomial: (0 1 2 4 5 7 8 10 11 12 16 22 23 26 32) + // data width: 8 + // convention: the first serial data bit is D[7] + function [31:0] nextCRC32_D8; + + input [7:0] Data; + input [31:0] CRC; + + reg [7:0] D; + reg [31:0] C; + reg [31:0] NewCRC; + + begin + + D = Data; + C = CRC; + + NewCRC[0] = D[6] ^ D[0] ^ C[24] ^ C[30]; + NewCRC[1] = D[7] ^ D[6] ^ D[1] ^ D[0] ^ C[24] ^ C[25] ^ C[30] ^ + C[31]; + NewCRC[2] = D[7] ^ D[6] ^ D[2] ^ D[1] ^ D[0] ^ C[24] ^ C[25] ^ + C[26] ^ C[30] ^ C[31]; + NewCRC[3] = D[7] ^ D[3] ^ D[2] ^ D[1] ^ C[25] ^ C[26] ^ C[27] ^ + C[31]; + NewCRC[4] = D[6] ^ D[4] ^ D[3] ^ D[2] ^ D[0] ^ C[24] ^ C[26] ^ + C[27] ^ C[28] ^ C[30]; + NewCRC[5] = D[7] ^ D[6] ^ D[5] ^ D[4] ^ D[3] ^ D[1] ^ D[0] ^ C[24] ^ + C[25] ^ C[27] ^ C[28] ^ C[29] ^ C[30] ^ C[31]; + NewCRC[6] = D[7] ^ D[6] ^ D[5] ^ D[4] ^ D[2] ^ D[1] ^ C[25] ^ C[26] ^ + C[28] ^ C[29] ^ C[30] ^ C[31]; + NewCRC[7] = D[7] ^ D[5] ^ D[3] ^ D[2] ^ D[0] ^ C[24] ^ C[26] ^ + C[27] ^ C[29] ^ C[31]; + NewCRC[8] = D[4] ^ D[3] ^ D[1] ^ D[0] ^ C[0] ^ C[24] ^ C[25] ^ + C[27] ^ C[28]; + NewCRC[9] = D[5] ^ D[4] ^ D[2] ^ D[1] ^ C[1] ^ C[25] ^ C[26] ^ + C[28] ^ C[29]; + NewCRC[10] = D[5] ^ D[3] ^ D[2] ^ D[0] ^ C[2] ^ C[24] ^ C[26] ^ + C[27] ^ C[29]; + NewCRC[11] = D[4] ^ D[3] ^ D[1] ^ D[0] ^ C[3] ^ C[24] ^ C[25] ^ + C[27] ^ C[28]; + NewCRC[12] = D[6] ^ D[5] ^ D[4] ^ D[2] ^ D[1] ^ D[0] ^ C[4] ^ C[24] ^ + C[25] ^ C[26] ^ C[28] ^ C[29] ^ C[30]; + NewCRC[13] = D[7] ^ D[6] ^ D[5] ^ D[3] ^ D[2] ^ D[1] ^ C[5] ^ C[25] ^ + C[26] ^ C[27] ^ C[29] ^ C[30] ^ C[31]; + NewCRC[14] = D[7] ^ D[6] ^ D[4] ^ D[3] ^ D[2] ^ C[6] ^ C[26] ^ C[27] ^ + C[28] ^ C[30] ^ C[31]; + NewCRC[15] = D[7] ^ D[5] ^ D[4] ^ D[3] ^ C[7] ^ C[27] ^ C[28] ^ + C[29] ^ C[31]; + NewCRC[16] = D[5] ^ D[4] ^ D[0] ^ C[8] ^ C[24] ^ C[28] ^ C[29]; + NewCRC[17] = D[6] ^ D[5] ^ D[1] ^ C[9] ^ C[25] ^ C[29] ^ C[30]; + NewCRC[18] = D[7] ^ D[6] ^ D[2] ^ C[10] ^ C[26] ^ C[30] ^ C[31]; + NewCRC[19] = D[7] ^ D[3] ^ C[11] ^ C[27] ^ C[31]; + NewCRC[20] = D[4] ^ C[12] ^ C[28]; + NewCRC[21] = D[5] ^ C[13] ^ C[29]; + NewCRC[22] = D[0] ^ C[14] ^ C[24]; + NewCRC[23] = D[6] ^ D[1] ^ D[0] ^ C[15] ^ C[24] ^ C[25] ^ C[30]; + NewCRC[24] = D[7] ^ D[2] ^ D[1] ^ C[16] ^ C[25] ^ C[26] ^ C[31]; + NewCRC[25] = D[3] ^ D[2] ^ C[17] ^ C[26] ^ C[27]; + NewCRC[26] = D[6] ^ D[4] ^ D[3] ^ D[0] ^ C[18] ^ C[24] ^ C[27] ^ + C[28] ^ C[30]; + NewCRC[27] = D[7] ^ D[5] ^ D[4] ^ D[1] ^ C[19] ^ C[25] ^ C[28] ^ + C[29] ^ C[31]; + NewCRC[28] = D[6] ^ D[5] ^ D[2] ^ C[20] ^ C[26] ^ C[29] ^ C[30]; + NewCRC[29] = D[7] ^ D[6] ^ D[3] ^ C[21] ^ C[27] ^ C[30] ^ C[31]; + NewCRC[30] = D[7] ^ D[4] ^ C[22] ^ C[28] ^ C[31]; + NewCRC[31] = D[5] ^ C[23] ^ C[29]; + + nextCRC32_D8 = NewCRC; + + end + + endfunction + +//endmodule + +
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