Altera Integer Arithmetic IP Bedienungsanleitung PDF herunterladen (Seite 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

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