Altera Integer Arithmetic IP User Manual
Page 92
Parameter Name
Type
Required
Description
PORT_SIGNB
String
No
Specifies the usage of the
signb
input port. Values are
PORT_USED
,
PORT_UNUSED
,
and
PORT_CONNECTIVITY
. If
omitted the default value is
PORT_CONNECTIVITY
.
Beginning from Stratix V
devices onwards, the
PORT_
CONNECTIVITY
parameter is
not supported. The default
value is
PORT_UNUSED
.
REPRESENTATION_[]
String
No
Parameter
[A,B]
. Specifies
the numerical representation
of the corresponding
data[]
port. Values are
UNSIGNED
and
SIGNED
. When this
parameter is set to
SIGNED
,
the accumulator interprets
the
dataa
input as signed
two's complement. If
omitted, the default value is
UNSIGNED
. This parameter is
ignored if the
signa
port is
used.
SIGN_ACLR_[]
String
No
Parameter
[A,B]
. Specifies
the asynchronous clear signal
for the first register on the
corresponding
sign[]
port.
Values are
ACLR0
,
ACLR1
,
ACLR2
, and
ACLR3
. If omitted
the default value is
ACLR3
.
This parameter is ignored if
the corresponding
sign[]
port is unused.
SIGN_PIPELINE_ACLR_[]
String
No
Parameter
[A,B]
. Specifies
the asynchronous clear signal
for the second register on the
corresponding
sign[]
port.
Values are
ACLR0
,
ACLR1
,
ACLR2
, and
ACLR3
. If omitted
the default value is
ACLR3
.
This parameter is ignored if
the corresponding
sign[]
port is unused.
UG-01063
2014.12.19
ALTMULT_ACCUM Parameters
8-11
ALTMULT_ACCUM (Multiply-Accumulate)
Altera Corporation