rtl/dsp/dsp_slice.v


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module dsp_slice #
(
    AB_INPUT   = "DIRECT",
    B_REG      = 2
)
(
    input         clk,
    input         ce_a1,
    input         ce_b1,
    input         ce_a2,
    input         ce_b2,
    input         ce_m,
    input         ce_p,
    input         ce_mode,
    input  [17:0] a,
    input  [16:0] b,
    output [46:0] p,
    input  [ 4:0] inmode,
    input  [ 6:0] opmode,
    input  [ 3:0] alumode,
    input  [17:0] casc_a_in,
    input  [16:0] casc_b_in,
    output [17:0] casc_a_out,
    output [16:0] casc_b_out
);

    wire [30-18-1:0] casc_a_dummy;
    wire [18-17-1:0] casc_b_dummy;
    wire [48-47-1:0] p_dummy;
    
    DSP48E1 #
    (
        .AREG                   (2),
        .BREG                   (B_REG),
        .CREG                   (0),
        .DREG                   (0),
        .ADREG                  (0),
        .MREG                   (1),
        .PREG                   (1),
        .ACASCREG               (1),
        .BCASCREG               (1),
        .INMODEREG              (0),
        .OPMODEREG              (1),
        .ALUMODEREG             (0),
        .CARRYINREG             (0),
        .CARRYINSELREG          (0),

        .A_INPUT                (AB_INPUT),
        .B_INPUT                (AB_INPUT),

        .USE_DPORT              ("FALSE"),
        .USE_MULT               ("DYNAMIC"),
        .USE_SIMD               ("ONE48"),

        .MASK                   (48'h3fffffffffff),
        .PATTERN                (48'h000000000000),
        .SEL_MASK               ("MASK"),
        .SEL_PATTERN            ("PATTERN"),
        
        .USE_PATTERN_DETECT     ("NO_PATDET"),
        .AUTORESET_PATDET       ("NO_RESET")
    )
    DSP48E1_inst
    (
        .CLK                (clk),
    
        .CEA1               (ce_a1),
        .CEB1               (ce_b1),
        .CEA2               (ce_a2),
        .CEB2               (ce_b2),
        .CEAD               (1'b0),
        .CEC                (1'b0),
        .CED                (1'b0),
        .CEM                (ce_m),
        .CEP                (ce_p),
        .CEINMODE           (1'b0),
        .CECTRL             (ce_mode),
        .CEALUMODE          (1'b0),
        .CECARRYIN          (1'b0),

        .A                  ({{(30-18){1'b0}}, a}),
        .B                  ({{(18-17){1'b0}}, b}),
        .C                  ({48{1'b0}}),
        .D                  ({25{1'b0}}),
        .P                  ({p_dummy, p}),
        
        .INMODE             (inmode),
        .OPMODE             (opmode),
        .ALUMODE            (alumode),

        .ACIN               ({{(30-18){1'b0}}, casc_a_in}),
        .BCIN               ({{(18-17){1'b0}}, casc_b_in}),
        .ACOUT              ({casc_a_dummy, casc_a_out}),
        .BCOUT              ({casc_b_dummy, casc_b_out}),
        .PCIN               ({48{1'b0}}),
        .PCOUT              (),
        .CARRYCASCIN        (1'b0),
        .CARRYCASCOUT       (),
 
        .RSTA               (1'b0),
        .RSTB               (1'b0),
        .RSTC               (1'b0),
        .RSTD               (1'b0),
        .RSTM               (1'b0),
        .RSTP               (1'b0),
        .RSTINMODE          (1'b0),
        .RSTCTRL            (1'b0),
        .RSTALUMODE         (1'b0),
        .RSTALLCARRYIN      (1'b0),

        .UNDERFLOW          (),
        .OVERFLOW           (),
        .PATTERNDETECT      (),
        .PATTERNBDETECT     (),

        .CARRYIN            (1'b0),
        .CARRYOUT           (),
        .CARRYINSEL         (3'b000),

        .MULTSIGNIN         (1'b0),
        .MULTSIGNOUT        ()
 );


endmodule