beta_cal.v

上传的是WIMAX系统中

    else begin
        if( clr_beta ) begin
            { gamma15, gamma14, gamma13, gamma12,
                gamma11, gamma10, gamma9, gamma8,
                    gamma7, gamma6, gamma5, gamma4,
                        gamma3, gamma2, gamma1, gamma0 }
                            <= 1'b0;
        end
        else if( beta_source_val_d2 ) begin
            { gamma15, gamma14, gamma13, gamma12,
                gamma11, gamma10, gamma9, gamma8,
                    gamma7, gamma6, gamma5, gamma4,
                        gamma3, gamma2, gamma1, gamma0 }
                            <=
            { gamma15_t2, gamma14_t2, gamma13_t2, gamma12_t2,
                gamma11_t2, gamma10_t2, gamma9_t2, gamma8_t2,
                  gamma7_t2, gamma6_t2, gamma5_t2, gamma4_t2,
                    gamma3_t2, gamma2_t2, gamma1_t2, gamma0_t2 };
        end
        else begin
            { gamma15, gamma14, gamma13, gamma12,
                gamma11, gamma10, gamma9, gamma8,
                    gamma7, gamma6, gamma5, gamma4,
                        gamma3, gamma2, gamma1, gamma0 }
                            <=
            { gamma15, gamma14, gamma13, gamma12,
                gamma11, gamma10, gamma9, gamma8,
                    gamma7, gamma6, gamma5, gamma4,
                        gamma3, gamma2, gamma1, gamma0 };
        end
    end
end

///*************************************************************************
///beta calculator：9，12
///*************************************************************************
reg [STATE_MATRIC_WIDTH-1:0] tmp0,tmp1,tmp2,tmp3,tmp4,tmp5,tmp6,tmp7;
always @(*) begin
    if(new_beta_cal) 
        {tmp7, tmp6, tmp5, tmp4, tmp3, tmp2, tmp1, tmp0} = 1'b0;
    else
        {tmp7, tmp6, tmp5, tmp4, tmp3, tmp2, tmp1, tmp0} = 
            {beta7, beta6, beta5, beta4, beta3, beta2, beta1, beta0};
end 

reg [STATE_MATRIC_WIDTH-1:0] beta00,beta01,beta02,beta03,
                             beta10,beta11,beta12,beta13,
                             beta20,beta21,beta22,beta23,
                             beta30,beta31,beta32,beta33,
                             beta40,beta41,beta42,beta43,
                             beta50,beta51,beta52,beta53,
                             beta60,beta61,beta62,beta63,
                             beta70,beta71,beta72,beta73;
always @ (*) begin
    beta00 = tmp0 + {{3{gamma0[BRANCH_MATRIC_WIDTH-1]}},gamma0};
    beta01 = tmp7 + {{3{gamma7[BRANCH_MATRIC_WIDTH-1]}},gamma7};
    beta02 = tmp4 + {{3{gamma11[BRANCH_MATRIC_WIDTH-1]}},gamma11};
    beta03 = tmp3 + {{3{gamma12[BRANCH_MATRIC_WIDTH-1]}},gamma12};
    ////cal beta1    
    beta10 = tmp4 + {{3{gamma0[BRANCH_MATRIC_WIDTH-1]}},gamma0};
    beta11 = tmp3 + {{3{gamma7[BRANCH_MATRIC_WIDTH-1]}},gamma7};
    beta12 = tmp0 + {{3{gamma11[BRANCH_MATRIC_WIDTH-1]}},gamma11};
    beta13 = tmp7 + {{3{gamma12[BRANCH_MATRIC_WIDTH-1]}},gamma12};
    ///cal beta2     
    beta20 = tmp1 + {{3{gamma2[BRANCH_MATRIC_WIDTH-1]}},gamma2};
    beta21 = tmp6 + {{3{gamma5[BRANCH_MATRIC_WIDTH-1]}},gamma5};
    beta22 = tmp5 + {{3{gamma9[BRANCH_MATRIC_WIDTH-1]}},gamma9};
    beta23 = tmp2 + {{3{gamma14[BRANCH_MATRIC_WIDTH-1]}},gamma14};
    ///cal beta3     
    beta30 = tmp5 + {{3{gamma2[BRANCH_MATRIC_WIDTH-1]}},gamma2};
    beta31 = tmp2 + {{3{gamma5[BRANCH_MATRIC_WIDTH-1]}},gamma5};
    beta32 = tmp1 + {{3{gamma9[BRANCH_MATRIC_WIDTH-1]}},gamma9};
    beta33 = tmp6 + {{3{gamma14[BRANCH_MATRIC_WIDTH-1]}},gamma14};
    ///cal beta4     
    beta40 = tmp6 + {{3{gamma3[BRANCH_MATRIC_WIDTH-1]}},gamma3};
    beta41 = tmp1 + {{3{gamma4[BRANCH_MATRIC_WIDTH-1]}},gamma4};
    beta42 = tmp2 + {{3{gamma8[BRANCH_MATRIC_WIDTH-1]}},gamma8};
    beta43 = tmp5 + {{3{gamma15[BRANCH_MATRIC_WIDTH-1]}},gamma15};
    ///cal beta5     
    beta50 = tmp2 + {{3{gamma3[BRANCH_MATRIC_WIDTH-1]}},gamma3};
    beta51 = tmp5 + {{3{gamma4[BRANCH_MATRIC_WIDTH-1]}},gamma4};
    beta52 = tmp6 + {{3{gamma8[BRANCH_MATRIC_WIDTH-1]}},gamma8};
    beta53 = tmp1 + {{3{gamma15[BRANCH_MATRIC_WIDTH-1]}},gamma15};
    ///cal beta6     
    beta60 = tmp7 + {{3{gamma1[BRANCH_MATRIC_WIDTH-1]}},gamma1};
    beta61 = tmp0 + {{3{gamma6[BRANCH_MATRIC_WIDTH-1]}},gamma6};
    beta62 = tmp3 + {{3{gamma10[BRANCH_MATRIC_WIDTH-1]}},gamma10};
    beta63 = tmp4 + {{3{gamma13[BRANCH_MATRIC_WIDTH-1]}},gamma13};
    ///cal beta7     
    beta70 = tmp3 + {{3{gamma1[BRANCH_MATRIC_WIDTH-1]}},gamma1};
    beta71 = tmp4 + {{3{gamma6[BRANCH_MATRIC_WIDTH-1]}},gamma6};
    beta72 = tmp7 + {{3{gamma10[BRANCH_MATRIC_WIDTH-1]}},gamma10};
    beta73 = tmp0 + {{3{gamma13[BRANCH_MATRIC_WIDTH-1]}},gamma13};
    
end

wire    [STATE_MATRIC_WIDTH-1:0]    beta_t7,beta_t6,beta_t5,beta_t4,
                                    beta_t3,beta_t2,beta_t1,beta_t0;

mod_max4 mod_max4_0
(
    ///input
    .a (beta00 ),
    .b (beta01 ),
    .c (beta02 ),
    .d (beta03 ),
    ///output
    .e (beta_t0)
);

mod_max4 mod_max4_1
(
    ///input
    .a (beta10 ),
    .b (beta11 ),
    .c (beta12 ),
    .d (beta13 ),
    ///output
    .e (beta_t1)
);

mod_max4 mod_max4_2
(
    ///input
    .a (beta20 ),
    .b (beta21 ),
    .c (beta22 ),
    .d (beta23 ),
    ///output
    .e (beta_t2)
);

mod_max4 mod_max4_3
(
    ///input
    .a (beta30 ),
    .b (beta31 ),
    .c (beta32 ),
    .d (beta33 ),
    ///output
    .e (beta_t3)
);

mod_max4 mod_max4_4
(
    ///input
    .a (beta40 ),
    .b (beta41 ),
    .c (beta42 ),
    .d (beta43 ),
    ///output
    .e (beta_t4)
);

mod_max4 mod_max4_5
(
    ///input
    .a (beta50 ),
    .b (beta51 ),
    .c (beta52 ),
    .d (beta53 ),
    ///output
    .e (beta_t5)
);

mod_max4 mod_max4_6
(
    ///input
    .a (beta60 ),
    .b (beta61 ),
    .c (beta62 ),
    .d (beta63 ),
    ///output
    .e (beta_t6)
);

mod_max4 mod_max4_7
(
    ///input
    .a (beta70 ),
    .b (beta71 ),
    .c (beta72 ),
    .d (beta73 ),
    ///output
    .e (beta_t7)
 );

///beta reg
always @ ( posedge clk_sys or negedge rst_b ) begin
    if( !rst_b ) begin
        { beta7, beta6, beta5, beta4,
            beta3, beta2, beta1, beta0 } <= 1'b0;
    end
    else begin
        if(clr_beta)
            { beta7, beta6, beta5, beta4,
                beta3, beta2, beta1, beta0 } <= 1'b0;
        else if(beta_source_val_d3)
            { beta7, beta6, beta5, beta4,
                beta3, beta2, beta1, beta0 }
                <=
            { beta_t7, beta_t6, beta_t5, beta_t4,
                beta_t3, beta_t2, beta_t1, beta_t0 };
        else
            { beta7, beta6, beta5, beta4,
                beta3, beta2, beta1, beta0 }
                <=
            { beta7, beta6, beta5, beta4,
                beta3, beta2, beta1, beta0 };
    end
end
///*************************************************************************
///output
///*************************************************************************

///delay ls,la 2 cycles
reg [SOFT_INFO_WIDTH*2-1:0]  ys_d1,ys_d2,ys_d3;
reg [PRIOR_INFO_WIDTH*3-1:0] la_d1,la_d2,la_d3;
always @ ( posedge clk_sys or negedge rst_b ) begin
    if( !rst_b ) begin
        {ys_d3,ys_d2,ys_d1} <= 1'b0;
        {la_d3,la_d2,la_d1} <= 1'b0;
    end
    else begin
        {ys_d3,ys_d2,ys_d1} <= {ys_d2,ys_d1,ys};
        {la_d3,la_d2,la_d1} <= {la_d2,la_d1,la};
    end
end

///output rename
///reg beta_source_val_d1,beta_source_val_d2;
always @ ( posedge clk_sys or negedge rst_b ) begin
    if( !rst_b )
        {beta_source_val_d4,beta_source_val_d3,beta_source_val_d2, beta_source_val_d1 } <= 1'b0;
    else
        {beta_source_val_d4,beta_source_val_d3,beta_source_val_d2, beta_source_val_d1 }
            <= {beta_source_val_d3,beta_source_val_d2,beta_source_val_d1, beta_source_val };
end

assign  beta_sink_val = beta_source_val_d4;
assign  beta = {beta7,beta6,beta5,beta4,beta3,beta2,beta1,beta0};

assign  gamma = { gamma15, gamma14, gamma13, gamma12,
                  gamma11, gamma10, gamma9, gamma8,
                  gamma7, gamma6, gamma5, gamma4,
                  gamma3, gamma2, gamma1, gamma0 };
assign  ys_beta_out = ys_d3;
assign  la_beta_out = la_d3;

endmodule  ///beta_cal