Parameters

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Parameter	Type	Required	Comments
`IO_STANDARD`	String	No	Specifies the I/O standard for the tri-stated output pin. Values are legal Quartus Prime Settings File (.qsf) Definition I/O standards Definition values.
`CURRENT_STRENGTH`	String	No	Specifies the current strength value. Values are legal Quartus^® Prime Settings File current strength new values.
SLEW_RATE	Integer	No	Specifies the low-to-high or high-to-low transitions on output pins, accepting positive integer values including `0`. This parameter available for supported device(CycloneIII and StratixIII) families.
`SLOW_SLEW_RATE`	String	No	Specifies whether to use slow slew rate for the tri-stated output pin. Values are `"ON"` or `"OFF"`. This parameter available for supported device(MAXII) families.
LOCATION	String	No	Specifies a legal pin location for the current device.
`ENABLE_BUS_HOLD`	String	No	Specifies whether or not to enable bus-hold circuitry. Legal values are `"ON"` and `"OFF"`.
`WEAK_PULL_UP_RESISTOR`	String	No	Specifies whether or not to enable the weak pull-up resistor. Legal values are `"ON"` and `"OFF"`.