
Parameter Name Type Requi
red
Description
CHAINOUT_ROUNDING String No
Enables rounding handling at the
chainout stage. 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.
If the value of CHAINOUT_
ROUNDING is YES, the symmetric
saturation at the second adder
output stage is not allowed. If
omitted, the default value is NO.
CHAINOUT_ROUND_REGISTER
String No Specifies the clock source for the
first register on the chainout_
round input. Values are
UNREGISTERED, CLOCK0, CLOCK1,
CLOCK2, and CLOCK3. If omitted,
the default value is CLOCK0.
CHAINOUT_ROUND_ACLR String No Specifies the asynchronous clear
source for the first register on the
chainout_round input. Values
are ACLR0, ACLR1, ACLR2, and
ACLR3. If omitted and CHAINOUT_
ROUND_REGISTER is used, the
default value is ACLR3.
CHAINOUT_ROUND_PIPELINE_REGISTER String No Specifies the clock source for the
second register on the chainout_
round input. Values are
UNREGISTERED, CLOCK0, CLOCK1,
CLOCK2, and CLOCK3. If omitted,
the default value is CLOCK0.
CHAINOUT_ROUND_PIPELINE_ACLR String No Specifies the asynchronous clear
source for the second register on
the chainout_round input.
Values are ACLR0, ACLR1, ACLR2,
and ACLR3. If omitted and
CHAINOUT_ROUND_ PIPELINE_
REGISTER is used, the default
value is ACLR3.
CHAINOUT_ROUND_OUTPUT_REGISTER String No Specifies the clock source for the
third register on the chainout_
round input. Values are
UNREGISTERED, CLOCK0, CLOCK1,
CLOCK2, and CLOCK3. If omitted,
the default value is CLOCK0.
9-28
ALTMULT_ADD Parameters
UG-01063
2014.12.19
Altera Corporation
ALTMULT_ADD (Multiply-Adder)
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