Altera I/O Buffer (ALTIOBUF) IP Core User Manual
Page 22
Name
Required
Type
Description
USE_DIFFERENTIAL_MODE
No
String
Specifies whether the output buffer
mode is differential. Values are
TRUE
and
FALSE
. When set to
TRUE
, both the
dataout
and
dataout_b
ports are
used. 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
.
Note: Currently,
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 the Cyclone series, only
series termination control is available.
Stratix series support both.
USE_OUT_DYNAMIC_DELAY_CHAIN1
No
String
Specifies whether the output buffer
incorporates a user-driven dynamic
delay chain in the IP core, specifically,
IO_CONFIG
and the first output 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
.
USE_OUT_DYNAMIC_DELAY_CHAIN2
No
String
Specifies whether the output buffer
incorporates a user-driven dynamic
delay chain in the IP core, specifically,
IO_CONFIG
and the second output
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.
22
ALTIOBUF Signals and Parameters: As Output Buffer
UG-01024
2014.12.15
Altera Corporation
I/O Buffer (ALTIOBUF) IP Core User Guide