Altera Integer Arithmetic IP User Manual

Page 119

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Parameter Name

Type

Requi

red

Description

INPUT_SOURCE_A0

String

No

Specifies the data source to the

first 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_A1

String

No

Specifies the data source to the

second 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_A2

String

No

Specifies the data source to the

third 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.

9-18

ALTMULT_ADD Parameters

UG-01063

2014.12.19

Altera Corporation

ALTMULT_ADD (Multiply-Adder)

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