| IO_STANDARD | 
String | 
No | 
Specifies the I/O standard for the tri-stated
                                output pin. Values are legal Quartus Prime Settings File (.qsf) DefinitionI/O standards Definition
                                values. | 
| 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". | 
| TERMINATION | 
String | 
No | 
Specifies any legal on-chip termination (OCT)
                                value for the current device. |