Altera Integer Arithmetic IP Bedienungsanleitung PDF herunterladen (Seite 145)

Parameter Name Type Required Description

WIDTH_B Integer Yes Specifies the width of the datab_

real[] and datab_imag[] ports. Value

must be 256 bits or less. If omitted, the

default value is 18.

WIDTH_RESULT Integer Yes Specifies the width of the result_

real[] and result_imag[] ports.

Value must be 256 bits or less. If

omitted, the default value is 36.

INTENDED_DEVICE_FAMILY String No This parameter is used for modeling

and behavioral simulation purposes.

Create the ALTMULT_COMPLEX

megafunction with the MegaWizard

Plug-in Manager to calculate the value

for this parameter.

LPM_HINT String No

When you instantiate a library of

parameterized modules (LPM) function

in a VHDL Design File (.vhd), you

must use the LPM_HINT parameter to

specify an Altera-specific parameter.

For example: LPM_HINT = "CHAIN_

SIZE = 8, ONE_INPUT_IS_CONSTANT

= YES"

The default value is UNUSED.

LPM_TYPE String No Identifies the library of parameterized

modules (LPM) entity name in VHDL

design files.

Design Example: Multiplication of 8-bit Complex Numbers Using

Canonical Representation

This design example uses the ALTMULT_COMPLEX megafunction to implement a complex multiplier

with an 8-bit input data width using the canonical representation. This example uses the MegaWizard

Plug-In Manager in the Quartus II software.

The following design files can be found in altmult_complex_DesignExample.zip:

complex_canonical.qar (archived Quartus II design files)

altmult_complex_ex_msim (ModelSim-Altera files)

Understanding the Simulation Results

10-8

Design Example: Multiplication of 8-bit Complex Numbers Using Canonical

Representation

UG-01063

2014.12.19

Altera Corporation

ALTMULT_COMPLEX (Complex Multiplier)

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