Altera Integer Arithmetic IP Manuel d'utilisateur télécharger pdf (Page 121)

Parameter Name Type Requi

red

Description

INPUT_SOURCE_B2 String No Specifies the data source of the

third 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 in sum 2 (sum of two)

mode, a value of LOOPBACK is

available.

INPUT_SOURCE_B3

String No Specifies the data source of the

fourth and corresponding

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.

9-20

ALTMULT_ADD Parameters

UG-01063

2014.12.19

Altera Corporation

ALTMULT_ADD (Multiply-Adder)

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Altera Integer Arithmetic IP Manuel d'utilisateur Page 121

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