crc32_dat72.v

本電子檔為 verilog cookbook,包含了通訊,影像,DSP等重要常用之verilog編碼,可作為工程師與初學者的參考手冊

    assign x19 = d40 ^ d16 ^ d50 ^ c0 ^ c10 ^ c19 ^ d22 ^ d69 ^ d27 ^ 
        c20 ^ c11 ^ d47 ^ d49 ^ d29 ^ c14 ^ d60 ^ c29 ^ d24 ^ d33 ^ 
        d38 ^ d71 ^ d15 ^ d35 ^ c31 ^ c9 ^ d32 ^ d3 ^ c7 ^ d7 ^ 
        d59 ^ d54 ^ d51 ^ d8 ^ d11 ^ d25 ^ d20;  // 36 ins 1 outs level 3

    assign x18 = d28 ^ d34 ^ c10 ^ d49 ^ d46 ^ c9 ^ c6 ^ c30 ^ d24 ^ 
        d14 ^ d26 ^ c8 ^ d39 ^ c13 ^ d10 ^ c28 ^ d7 ^ d2 ^ d58 ^ 
        c19 ^ d48 ^ d53 ^ d50 ^ d59 ^ c18 ^ d6 ^ d37 ^ d19 ^ d15 ^ 
        d31 ^ d70 ^ d23 ^ d68 ^ d32 ^ d21;  // 35 ins 1 outs level 3

    assign x17 = d18 ^ d69 ^ c27 ^ d38 ^ c18 ^ c8 ^ c12 ^ d27 ^ d5 ^ 
        c17 ^ d33 ^ d49 ^ c5 ^ d58 ^ d48 ^ d25 ^ d67 ^ c9 ^ d13 ^ 
        d57 ^ d14 ^ d31 ^ d1 ^ d30 ^ d23 ^ d9 ^ d22 ^ d52 ^ d20 ^ 
        d45 ^ c29 ^ d36 ^ d6 ^ c7 ^ d47;  // 35 ins 1 outs level 3

    assign x16 = d47 ^ d21 ^ c8 ^ c26 ^ d24 ^ d13 ^ d35 ^ d22 ^ d17 ^ 
        c4 ^ d5 ^ c17 ^ d12 ^ d0 ^ c16 ^ d30 ^ d26 ^ d57 ^ d8 ^ 
        c11 ^ d56 ^ c28 ^ d66 ^ d48 ^ c7 ^ d37 ^ d29 ^ d51 ^ d44 ^ 
        d68 ^ d4 ^ d32 ^ d19 ^ c6 ^ d46;  // 35 ins 1 outs level 3

    assign x15 = d4 ^ d66 ^ d59 ^ d50 ^ c5 ^ d44 ^ d20 ^ d7 ^ d34 ^ 
        d21 ^ d9 ^ d12 ^ c10 ^ d27 ^ d57 ^ d71 ^ c24 ^ d54 ^ c26 ^ 
        d15 ^ c31 ^ c9 ^ c16 ^ c14 ^ d45 ^ d60 ^ c19 ^ d30 ^ c17 ^ 
        d55 ^ c15 ^ c4 ^ c20 ^ d56 ^ d16 ^ d5 ^ d24 ^ d33 ^ d18 ^ 
        d53 ^ d64 ^ d3 ^ c22 ^ d62 ^ d52 ^ d49 ^ d8 ^ c13 ^ c12;  // 49 ins 1 outs level 3

    assign x14 = d65 ^ d58 ^ d56 ^ c30 ^ d3 ^ d44 ^ d4 ^ d17 ^ d14 ^ 
        d7 ^ d2 ^ d32 ^ c19 ^ d70 ^ d8 ^ c12 ^ d11 ^ c23 ^ d26 ^ 
        c11 ^ c16 ^ d51 ^ c25 ^ d49 ^ d43 ^ d61 ^ c18 ^ d15 ^ d55 ^ 
        d71 ^ d33 ^ d54 ^ c14 ^ d6 ^ c9 ^ c15 ^ d59 ^ c8 ^ d48 ^ 
        d29 ^ c4 ^ d52 ^ c21 ^ d53 ^ d23 ^ d63 ^ c13 ^ c31 ^ c3 ^ 
        d20 ^ d19;  // 51 ins 1 outs level 3

    assign x13 = d14 ^ c30 ^ c29 ^ c14 ^ d54 ^ d53 ^ d6 ^ d19 ^ d62 ^ 
        c3 ^ d55 ^ d60 ^ d16 ^ d2 ^ d5 ^ d42 ^ c8 ^ c15 ^ d70 ^ 
        d51 ^ c17 ^ d25 ^ d31 ^ c13 ^ d32 ^ c22 ^ c24 ^ d3 ^ d50 ^ 
        c20 ^ d48 ^ d58 ^ d64 ^ c10 ^ d47 ^ d69 ^ d10 ^ d13 ^ c12 ^ 
        d22 ^ d7 ^ c7 ^ c18 ^ c11 ^ d1 ^ d18 ^ d52 ^ d57 ^ c2 ^ 
        d43 ^ d28;  // 51 ins 1 outs level 3

    assign x12 = d0 ^ d68 ^ d53 ^ d50 ^ c10 ^ d9 ^ c31 ^ d31 ^ d71 ^ 
        c17 ^ c23 ^ c1 ^ d63 ^ d52 ^ c19 ^ d59 ^ d24 ^ d47 ^ c12 ^ 
        d4 ^ d56 ^ d41 ^ d5 ^ c6 ^ c2 ^ d2 ^ d49 ^ d42 ^ d61 ^ 
        c13 ^ c28 ^ d12 ^ d6 ^ d69 ^ c14 ^ d18 ^ c29 ^ d15 ^ c21 ^ 
        d57 ^ d27 ^ c7 ^ d17 ^ d30 ^ c9 ^ d46 ^ c16 ^ c11 ^ d13 ^ 
        d54 ^ d21 ^ d51 ^ d1;  // 53 ins 1 outs level 3

    assign x11 = c15 ^ d33 ^ c24 ^ c25 ^ c16 ^ d9 ^ d25 ^ d68 ^ c1 ^ 
        c8 ^ d17 ^ c28 ^ d58 ^ d64 ^ d56 ^ c19 ^ d55 ^ c26 ^ c5 ^ 
        d24 ^ d31 ^ d3 ^ c3 ^ d16 ^ d59 ^ d28 ^ c11 ^ d51 ^ d1 ^ 
        d41 ^ c14 ^ d14 ^ d40 ^ c10 ^ d50 ^ c0 ^ d27 ^ d36 ^ d15 ^ 
        d65 ^ d71 ^ c17 ^ d54 ^ d0 ^ c31 ^ d66 ^ c30 ^ d44 ^ c7 ^ 
        d4 ^ d70 ^ d43 ^ d12 ^ d26 ^ d57 ^ c18 ^ d20 ^ d48 ^ d45 ^ 
        c4 ^ d47;  // 61 ins 1 outs level 3

    assign x10 = d69 ^ d0 ^ d66 ^ d71 ^ d40 ^ d55 ^ c29 ^ c20 ^ c26 ^ 
        d28 ^ d52 ^ d29 ^ d36 ^ c23 ^ d16 ^ d9 ^ d58 ^ d35 ^ c16 ^ 
        d26 ^ c2 ^ d19 ^ c31 ^ d31 ^ d3 ^ d63 ^ c0 ^ c19 ^ d42 ^ 
        c22 ^ d13 ^ d62 ^ d60 ^ c15 ^ c18 ^ c30 ^ d39 ^ d5 ^ d56 ^ 
        d14 ^ d59 ^ c10 ^ d2 ^ d70 ^ d32 ^ c12 ^ d33 ^ d50;  // 48 ins 1 outs level 3

    assign x9 = c20 ^ c15 ^ c7 ^ d32 ^ d55 ^ c29 ^ d44 ^ d13 ^ d47 ^ 
        d5 ^ d36 ^ d69 ^ d24 ^ c18 ^ c27 ^ c31 ^ c30 ^ c11 ^ d66 ^ 
        d18 ^ d9 ^ d35 ^ d23 ^ d29 ^ d67 ^ c4 ^ d43 ^ d4 ^ d39 ^ 
        d34 ^ d64 ^ d38 ^ d41 ^ c26 ^ c13 ^ d68 ^ d11 ^ d51 ^ c21 ^ 
        d2 ^ d12 ^ d70 ^ d58 ^ d61 ^ c3 ^ c28 ^ d33 ^ c12 ^ d53 ^ 
        d52 ^ c6 ^ d46 ^ c1 ^ d60 ^ d71 ^ d1 ^ c24;  // 57 ins 1 outs level 3

    assign x8 = c25 ^ d12 ^ d34 ^ d66 ^ d65 ^ c5 ^ d68 ^ c14 ^ c27 ^ 
        d59 ^ d35 ^ d33 ^ c0 ^ c6 ^ d60 ^ c29 ^ c28 ^ c26 ^ c11 ^ 
        c23 ^ d51 ^ d52 ^ c20 ^ d40 ^ d31 ^ d43 ^ d17 ^ d54 ^ c17 ^ 
        d32 ^ c3 ^ d1 ^ c19 ^ d38 ^ d23 ^ d22 ^ d57 ^ d11 ^ c10 ^ 
        d45 ^ c30 ^ d46 ^ c12 ^ d42 ^ d70 ^ d63 ^ d3 ^ d69 ^ d67 ^ 
        d10 ^ d4 ^ d8 ^ d37 ^ d28 ^ c2 ^ d50 ^ d0;  // 57 ins 1 outs level 3

endmodule

////////////////////////////////////////////////////////////////
// Depth optimal factored version
////////////////////////////////////////////////////////////////

module crc32_dat72_factor (crc_in,dat_in,crc_out);
input [31:0] crc_in;
input [71:0] dat_in;
output [31:0] crc_out;

wire [31:0] crc_out;

wire x640, x639, x638, x637, x636, x635, x634, 
       x633, x632, x631, x630, x629, x628, x627, x626, 
       x625, x624, x623, x622, x621, x620, x618, x617, 
       x616, x615, x614, x613, x612, x611, x610, x609, 
       x608, x607, x606, x605, 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, x555, x554, x553, x552, 
       x551, x550, x549, x548, x547, x546, x545, x544, 
       x543, x542, x541, x540, x539, x538, x537, x536, 
       x535, x534, x533, x532, x531, x530, x529, x528, 
       x527, x526, x525, x524, x523, x522, x521, x520, 
       x519, x518, x517, x516, x515, x514, x513, x512, 
       x511, x510, x509, x508, x507, x506, x505, x504, 
       x503, x502, x501, x500, x499, x498, x497, x496, 
       x495, x494, x493, x492, x491, x7, x6, x5, 
       x4, x3, x2, x1, x0, x31, x30, x29, 
       x28, x27, x26, x25, x24, x23, x22, x21, 
       x20, x19, x18, x17, x16, x15, x14, x13, 
       x12, x11, x10, x9, x8;

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,d32,d33,d34,d35,d36,d37,d38,d39,d40,d41,d42,d43,d44,d45,d46,
    d47,d48,d49,d50,d51,d52,d53,d54,d55,d56,d57,d58,d59,d60,d61,d62,
    d63,d64,d65,d66,d67,d68,d69,d70,d71;

assign { d71,d70,d69,d68,d67,d66,d65,d64,d63,d62,d61,d60,d59,d58,d57,
        d56,d55,d54,d53,d52,d51,d50,d49,d48,d47,d46,d45,d44,d43,d42,d41,
        d40,d39,d38,d37,d36,d35,d34,d33,d32,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 [71:0];

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 x640i (.out(x640),.a(x516),.b(x522),.c(x503),.d(1'b0),.e(1'b0),.f(1'b0));  // 3 ins 1 outs level 2

    xor6 x639i (.out(x639),.a(x638),.b(d32),.c(x506),.d(x551),.e(x500),.f(x491));  // 6 ins 1 outs level 2

    xor6 x638i (.out(x638),.a(d8),.b(d27),.c(c6),.d(d38),.e(c17),.f(c23));  // 6 ins 1 outs level 1

    xor6 x637i (.out(x637),.a(x635),.b(x511),.c(x495),.d(x516),.e(x636),.f(1'b0));  // 5 ins 1 outs level 2

    xor6 x636i (.out(x636),.a(d61),.b(d36),.c(d41),.d(d4),.e(d68),.f(1'b0));  // 5 ins 1 outs level 1

    xor6 x635i (.out(x635),.a(c31),.b(c1),.c(d1),.d(d57),.e(d69),.f(d71));  // 6 ins 1 outs level 1

    xor6 x634i (.out(x634),.a(x552),.b(x503),.c(x515),.d(x512),.e(x499),.f(d61));  // 6 ins 1 outs level 2

    xor6 x633i (.out(x633),.a(d31),.b(d69),.c(d13),.d(c31),.e(d22),.f(c9));  // 6 ins 1 outs level 1

    xor6 x632i (.out(x632),.a(x495),.b(x631),.c(x513),.d(x492),.e(x494),.f(1'b0));  // 5 ins 1 outs level 2

    xor6 x631i (.out(x631),.a(d64),.b(c16),.c(d28),.d(c24),.e(d56),.f(d29));  // 6 ins 1 outs level 1

    xor6 x630i (.out(x630),.a(x629),.b(x519),.c(x511),.d(x518),.e(x491),.f(1'b0));  // 5 ins 1 outs level 2

    xor6 x629i (.out(x629),.a(d15),.b(d18),.c(c13),.d(c31),.e(d41),.f(d53));  // 6 ins 1 outs level 1

    xor6 x628i (.out(x628),.a(x626),.b(x492),.c(x627),.d(x558),.e(x505),.f(x549));  // 6 ins 1 outs level 2

    xor6 x627i (.out(x627),.a(c30),.b(d19),.c(1'b0),.d(1'b0),.e(1'b0),.f(1'b0));  // 2 ins 1 outs level 1

    xor6 x626i (.out(x626),.a(d62),.b(c22),.c(d14),.d(c7),.e(d24),.f(d13));  // 6 ins 1 outs level 1

    xor6 x625i (.out(x625),.a(x624),.b(x562),.c(x530),.d(x529),.e(x513),.f(x497));  // 6 ins 1 outs level 2

    xor6 x624i (.out(x624),.a(d6),.b(d17),.c(d51),.d(d70),.e(d25),.f(1'b0));  // 5 ins 1 outs level 1

    xor6 x623i (.out(x623),.a(x621),.b(x548),.c(x493),.d(x622),.e(x513),.f(1'b0));  // 5 ins 1 outs level 2

    xor6 x622i (.out(x622),.a(d44),.b(c4),.c(d16),.d(d12),.e(1'b0),.f(1'b0));  // 4 ins 1 outs level 1

    xor6 x621i (.out(x621),.a(d70),.b(d9),.c(d24),.d(d34),.e(d40),.f(d4));  // 6 ins 1 outs level 1

    xor6 x620i (.out(x620),.a(d35),.b(x618),.c(x541),.d(x495),.e(x494),.f(1'b0));  // 5 ins 1 outs level 2

    xor6 x618i (.out(x618),.a(d32),.b(d5),.c(d13),.d(d46),.e(d19),.f(d22));  // 6 ins 1 outs level 1

    xor6 x617i (.out(x617),.a(d52),.b(x616),.c(x548),.d(x495),.e(x511),.f(x534));  // 6 ins 1 outs level 2

    xor6 x616i (.out(x616),.a(d14),.b(c5),.c(c12),.d(d23),.e(d47),.f(d33));  // 6 ins 1 outs level 1

    xor6 x615i (.out(x615),.a(x613),.b(x508),.c(x614),.d(x529),.e(x558),.f(1'b0));  // 5 ins 1 outs level 2

    xor6 x614i (.out(x614),.a(d26),.b(c28),.c(d10),.d(1'b0),.e(1'b0),.f(1'b0));  // 3 ins 1 outs level 1

    xor6 x613i (.out(x613),.a(c19),.b(d59),.c(d37),.d(d21),.e(d69),.f(d49));  // 6 ins 1 outs level 1

    xor6 x612i (.out(x612),.a(x610),.b(x495),.c(x513),.d(x611),.e(x525),.f(1'b0));  // 5 ins 1 outs level 2

    xor6 x611i (.out(x611),.a(c10),.b(d50),.c(d47),.d(d24),.e(1'b0),.f(1'b0));  // 4 ins 1 outs level 1

    xor6 x610i (.out(x610),.a(c11),.b(d11),.c(d69),.d(d35),.e(d32),.f(d25));  // 6 ins 1 outs level 1

    xor6 x609i (.out(x609),.a(x608),.b(x494),.c(d48),.d(x496),.e(x512),.f(1'b0));  // 5 ins 1 outs level 2

    xor6 x608i (.out(x608),.a(d47),.b(c8),.c(d61),.d(c1),.e(d17),.f(d40));  // 6 ins 1 outs level 1

    xor6 x607i (.out(x607),.a(d26),.b(d61),.c(d24),.d(c11),.e(1'b0),.f(1'b0));  // 4 ins 1 outs level 1

    xor6 x606i (.out(x606),.a(d27),.b(d35),.c(d18),.d(c31),.e(d13),.f(d49));  // 6 ins 1 outs level 1

    xor6 x605i (.out(x605),.a(x603),.b(d35),.c(d27),.d(x492),.e(x516),.f(x496));  // 6 ins 1 outs level 2

    xor6 x603i (.out(x603),.a(d6),.b(d62),.c(c22),.d(d37),.e(c15),.f(d55));  // 6 ins 1 outs level 1

    xor6 x602i (.out(x602),.a(d26),.b(x601),.c(x525),.d(x511),.e(x506),.f(1'b0));  // 5 ins 1 outs level 2

    xor6 x601i (.out(x601),.a(d36),.b(d20),.c(d31),.d(d35),.e(d15),.f(d46));  // 6 ins 1 outs level 1

    xor6 x600i (.out(x600),.a(d16),.b(x599),.c(x529),.d(x506),.e(x505),.f(1'b0));  // 5 ins 1 outs level 2

    xor6 x599i (.out(x599),.a(d36),.b(d4),.c(d30),.d(c11),.e(c7),.f(1'b0));  // 5 ins 1 outs level 1

    xor6 x598i (.out(x598),.a(x597),.b(x520),.c(x491),.d(x499),.e(x497),.f(x524));  // 6 ins 1 outs level 2

    xor6 x597i (.out(x597),.a(c31),.b(d24),.c(d71),.d(d11),.e(d0),.f(1'b0));  // 5 ins 1 outs level 1

    xor6 x596i (.out(x596),.a(x594),.b(x493),.c(x491),.d(x595),.e(x503),.f(x520));  // 6 ins 1 outs level 2

    xor6 x595i (.out(x595),.a(d44),.b(c4),.c(d10),.d(1'b0),.e(1'b0),.f(1'b0));  // 3 ins 1 outs level 1

    xor6 x594i (.out(x594),.a(c26),.b(c21),.c(d39),.d(d69),.e(c8),.f(d66));  // 6 ins 1 outs level 1

    xor6 x593i (.out(x593),.a(x591),.b(x508),.c(x592),.d(x530),.e(x519),.f(1'b0));  // 5 ins 1 outs level 2

    xor6 x592i (.out(x592),.a(c27),.b(d27),.c(d28),.d(1'b0),.e(1'b0),.f(1'b0));  // 3 ins 1 outs level 1

    xor6 x591i (.out(x591),.a(d29),.b(d45),.c(d67),.d(d11),.e(d23),.f(d68));  // 6 ins 1 outs level 1

    xor6 x590i (.out(x590),.a(d5),.b(x589),.c(x499),.d(x524),.e(x501),.f(x550));  // 6 ins 1 outs level 2

    xor6 x589i (.out(x589),.a(d20),.b(d6),.c(d7),.d(c9),.e(d71),.f(c28));  // 6 ins 1 outs level 1

    xor6 x588i (.out(x588),.a(x587),.b(d34),.c(x495),.d(x524),.e(1'b0),.f(1'b0));  // 4 ins 1 outs level 2

    xor6 x587i (.out(x587),.a(d48),.b(c11),.c(d27),.d(d2),.e(d7),.f(1'b0));  // 5 ins 1 outs level 1

    xor6 x586i (.out(x586),.a(x503),.b(x585),.c(x542),.d(x498),.e(x496),.f(x492));  // 6 ins 1 outs level 2

    xor6 x585i (.out(x585),.a(d32),.b(d11),.c(d23),.d(c31),.e(d27),.f(d3));  // 6 ins 1 outs level 1

    xor6 x584i (.out(x584),.a(x582),.b(x498),.c(x583),.d(x562),.e(x551),.f(1'b0));  // 5 ins 1 outs level 2

    xor6 x583i (.out(x583),.a(c31),.b(d36),.c(d63),.d(1'b0),.e(1'b0),.f(1'b0));  // 3 ins 1 outs level 1

    xor6 x582i (.out(x582),.a(d62),.b(d9),.c(d1),.d(d30),.e(d46),.f(c22));  // 6 ins 1 outs level 1