Altera Integer Arithmetic IP User Manual
Page 127
Parameter Name
Type
Requi
red
Description
OUTPUT_ROUNDING
String
No
Enables rounding handling at
second adder stage. If original
design uses a Stratix II device, in
some cases this parameter can be
derived from the Stratix II
rounding settings. Values are
YES
,
NO
, and
VARIABLE
. A value of
YES
or
NO
specifies saturation
handling setting permanently to
on or off. A value of
VARIABLE
allows dynamically controlled
saturation handling.
OUTPUT_ROUND_TYPE
String
No
Specifies the rounding mode.
Values are
NEAREST_EVEN
and
NEAREST_INTEGER
. A value of
NEAREST_EVEN
specifies round-
to-nearest-even. A value of
NEAREST_INTEGER
specifies
round-to-nearest-integer. If
omitted, the default value is
NEAREST_INTEGER
.
OUTPUT_ROUND_REGISTER
String
No
Specifies the clock source for the
first register on the
output_
round
input. Values are
UNREGISTERED
,
CLOCK0
,
CLOCK1
,
CLOCK2
, and
CLOCK3
. If omitted,
the default value is
CLOCK0
.
OUTPUT_ROUND_ACLR
String
No
Specifies the asynchronous clear
source for the first register on the
output_round
input. Values are
ACLR0
,
ACLR1
,
ACLR2
, and
ACLR3
.
If omitted and
OUTPUT_ROUND_
REGISTER
is used, the default
value is
ACLR3
.
OUTPUT_ROUND_PIPELINE_REGISTER
String
No
Specifies the clock source for the
second register on the
output_
round
input. Values are
UNREGISTERED
,
CLOCK0
,
CLOCK1
,
CLOCK2
, and
CLOCK3
. If omitted,
the default value is
CLOCK0
.
OUTPUT_ROUND_PIPELINE_ACLR
String
No
Specifies the asynchronous clear
source for the second register on
the
output_round
input. Values
are
ACLR0
,
ACLR1
,
ACLR2
, and
ACLR3
. If omitted and
OUTPUT_
ROUND_PIPELINE_ REGISTER
is
used, the default value is ACLR3.
9-26
ALTMULT_ADD Parameters
UG-01063
2014.12.19
Altera Corporation
ALTMULT_ADD (Multiply-Adder)