Achronix Speedster22i User Macro Guide Manual de usuario descargar pdf (Pagina 200)

Multipliers BMULT28X28

Speedster22i Macro Cell Library

AchronixSemiconductorProprietary PAGE 183

BMULT28X28

28  28 Signed Multiplier

din0[27:0]

din1[27:0]

dout[55:0]

BMULT28X28

BMULT28X28 implements a signed 2828 multiplier that multiplies two signed (two’s

complement)28‐bitinputsforproducea56‐bitsignedproduct.

Table 7-6: Pin Description

Name Type Description

din0[27:0],

din1[27:0]

Signed (two’s complement) 28-bit multiplier inpu

ts. Bit 0 is the LSB.

dout[55:0]

Signed (two’s complement) 56-bit product. T

he value on dout is the

product of din0[27:0] and din1[27:0]. dout[0] is the LSB.

Verilog Instantiation Template

BMULT28x28 instance_name

(.dout(user_out[55:0]),.din0(user_in1[27:0]),.din1(user_in0[27:0]));

VHDL Instantiation Template

------------- ACHRONIX LIBRARY ------------

library speedster22i;

use speedster22i.components.all;

------------- DONE ACHRONIX LIBRARY ---------

-- Component Instantiation

BMULT28x28_instance_name : BMUL

T28x28

port map (dout => user_out,

din0 => user_in0,

din1 => user_in1);

Figure 7-3: Logic Symbol

input

output

1 2 ... 195 196 197 198 199 200 201 202 203 204 205 ... 223 224

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Achronix Speedster22i User Macro Guide Manual de usuario Pagina 200