Altera Integer Arithmetic IP User Manual

Page 67

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Parameter Name

Type

Required

Description

SIGNED_ACLR_[]

String No

Parameter [A, B]. Specifies the asynchro‐

nous clear signal for the first register on the

corresponding

sign[]

port. Values are

NONE

,

ACLR0

, and

ACLR1

. If omitted the default

value is

NONE

. The value must be set similar

to the value of

INPUT_ACLR_A0

.

MULTIPLIER_REGISTER[]

String No

Parameter [0...3]. Specifies the clock source

of the register that follows the corresponding

multiplier. Values are

UNREGISTERED

,

CLOCK0

,

CLOCK1

and

CLOCK2

. If omitted, the

default value is

UNREGISTERED

.

MULTIPLIER_ACLR[]

String No

Parameter [0...3]. Specifies the asynchronous

clear signal of the register that follows the

corresponding multiplier. Values are

NONE

,

ACLR0

, and

ACLR1

. If omitted the default

value is

NONE

.

MULTIPLIER1_DIRECTION

String No

Specifies whether the second multiplier adds

or subtracts its value from the sum. Values

are

ADD

and

SUB

. If the

addnsub1

port is

used, this parameter is ignored. If omitted,

the default value is

ADD

.

MULTIPLIER3_DIRECTION

String No

Specifies whether the fourth multiplier adds

or subtracts their results from the total.

Values are

ADD

and

SUB

. If the

addnsub3

port

is used, this parameter is ignored. If omitted,

the default value is

ADD

.

ACCUMULATOR

String No

Specifies the accumulator mode of the final

adder stage. Values are

YES

and

NO

. If

omitted, the default value is

NO

.

ACCUM_DIRECTION

String No

Specifies whether the accumulator adds or

subtracts its value from the previous sum.

Values are

ADD

and

SUB

. If omitted, the

default value is

ADD

.

OUTPUT_REGISTER

String No

Specifies the clock signal for the output

register. Values are

UNREGISTERED

,

CLOCK0

,

CLOCK1

and

CLOCK2

. If omitted, the default

value is

UNREGISTERED

.

OUTPUT_ACLR

String No

Specifies the asynchronous clear signal for

the second adder register. Values are

NONE

,

ACLR0

, and

ACLR1

. If omitted, the default

value is

NONE

.

PORT_SIGN[]

String No

Parameter [A, B]. Specifies the

corresponding

sign[a,b]

input port usage.

Values are

PORT_USED

and

PORT_UNUSED

. If

omitted, the default value is

PORT_UNUSED

.

6-14

ALTERA_MULT_ADD Parameters

UG-01063

2014.12.19

Altera Corporation

ALTERA_MULT_ADD (Multiply-Adder)

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