Altera I/O Buffer (ALTIOBUF) IP Core Manuale Utente Scaricare il pdf (Pagina 27)

Name Required Type Description

USE_ DIFFERENTIAL_MODE No String Specifies whether the bidirectional buffer

is differential. Values are TRUE and FALSE.

When set to TRUE, the output is the

difference between the dataio and

dataio_b ports. If omitted, the default is

FALSE.

Currently, ENABLE_BUS_HOLD and USE_

DIFFERENTIAL_MODE cannot be used

simultaneously.

OPEN_DRAIN_OUTPUT No String Open drain mode. Values are TRUE and

FALSE. If omitted, the default is FALSE.

OPEN_DRAIN_OUTPUT and USE_DIFFEREN-

TIAL_MODE cannot be used simultaneously.

USE_TERMINATION_CONTROL No String Specifies series termination control and

parallel termination control. Values are

TRUE and FALSE. If omitted, the default is

FALSE. When this parameter is used for

Arria II GX devices and Cyclone series,

only series termination control is available.

Stratix series supports both.

USE_DYNAMIC_TERMINATION_

CONTROL

No String Specifies dynamic termination control.

Values are TRUE and FALSE. If omitted, the

default is FALSE. An error is issued if

parallel termination (Rt) is on and

dynamic termination control is not

connected on a bidir pin. An error is

issued if Rt is off and dynamic termination

control is connected on an input or

bidirectional pin.

USE_IN_DYNAMIC_DELAY_CHAIN No String Specifies whether the input buffer incorpo‐

rates the user-driven dynamic delay chain

in the IP core, specifically, IO_CONFIG and

an input delay cell. Additional input ports

are io_config_clk, io_config_clkena,

io_config_update, and io_config_

datain. Values are TRUE and FALSE. If

omitted, the default is FALSE.

UG-01024

2014.12.15

ALTIOBUF Signals and Parameters: As Bidirectional Buffer

I/O Buffer (ALTIOBUF) IP Core User Guide

Altera Corporation

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Altera I/O Buffer (ALTIOBUF) IP Core Manuale Utente Pagina 27

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