Altera Integer Arithmetic IP Manuale Utente Scaricare il pdf (Pagina 120)

Parameter Name Type Requi

red

Description

INPUT_SOURCE_A3 String No Specifies the data source to the

fourth and corresponding

multiplier. Values are DATAA and

SCANA. If this parameter is set to

DATAA, the adder uses the values

from the dataa[] port. If this

parameter is set to SCANA, the

adder uses values from the scan

chain. If omitted, the default

value is DATAA. For Stratix II

devices, a value of VARIABLE is

available for the adder to perform

rounding and saturation on the

data source before feeding the

result to the multiplier.

INPUT_SOURCE_B0

String No Specifies the data source of the

first multiplier. Values are DATAB

and SCANB. If this parameter is set

to DATAB, then the adder uses the

values from the datab[] port. If

this parameter is set to SCANB,

then the adder uses values from

the scan chain. If omitted, the

default value is DATAB. For Stratix

II devices, a value of VARIABLE is

available for the adder to perform

rounding and saturation on the

data source before feeding the

result to the multiplier. For

Stratix III devices in sum 2 (sum

of two) mode, a value of

LOOPBACK is available.

INPUT_SOURCE_B1

String No Specifies the data source of the

second multiplier. Values are

DATAB and SCANB. If this

parameter is set to DATAB, then

the adder uses the values from the

datab[] port. If this parameter

is set to SCANB, then the adder

uses values from the scan chain.

If omitted, the default value is

DATAB. For Stratix II devices, a

value of VARIABLE is available for

the adder to perform rounding

and saturation on the data source

before feeding the result to the

multiplier. For Stratix III devices

in sum 2 (sum of two) mode, a

value of LOOPBACK is available.

UG-01063

2014.12.19

ALTMULT_ADD Parameters

9-19

ALTMULT_ADD (Multiply-Adder)

Altera Corporation

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Altera Integer Arithmetic IP Manuale Utente Pagina 120

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