
Parameter Name Type Required Description
PREADDER_DIRECTION_3 String No Specifies whether the pre-
adder of the fourth and
corresponding multiplier
adds or subtracts its value
from the sum. Values are ADD
and SUB. If omitted, the
default value is ADD.
COEFFSEL0_REGISTER String No Specifies the clock source for
the coefficient inputs of the
first multiplier. Values are
UNREGISTERED, CLOCK0,
CLOCK1, and CLOCK2. The
value must be set similar to
the value of INPUT_
REGISTER_A0 or set as
UNREGISTERED.
COEFFSEL1_REGISTER String No Specifies the clock source for
the coefficient inputs of the
second multiplier. Values are
UNREGISTERED, CLOCK0,
CLOCK1, and CLOCK2. The
value must be set similar to
the value of INPUT_
REGISTER_A0 or set as
UNREGISTERED.
COEFFSEL2_REGISTER String No Specifies the clock source for
the coefficient inputs of the
third multiplier. Values are
UNREGISTERED, CLOCK0,
CLOCK1, and CLOCK2. The
value must be set similar to
the value of INPUT_
REGISTER_A0 or set as
UNREGISTERED.
COEFFSEL3_REGISTER String No Specifies the clock source for
the coefficient inputs of the
fourth and corresponding
multiplier. Values are
UNREGISTERED, CLOCK0,
CLOCK1, and CLOCK2. The
value must be set similar to
the value of INPUT_
REGISTER_A0 or set as
UNREGISTERED.
8-16
ALTMULT_ACCUM Parameters
UG-01063
2014.12.19
Altera Corporation
ALTMULT_ACCUM (Multiply-Accumulate)
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