Altera Integer Arithmetic IP - Manual (Page 67)

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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