Altera Quartus II Settings File - Manual (Page 145)

POWER_UP_LEVEL
Causes a register to power up with the specified logic level, either High (1) or Low (0). If this option is
specified for an input pin, it is automatically transferred to the register that is driven by the pin if the
following conditions are present: (1) there is no intervening logic, other than inversion, between the pin
and the register; (2) the input pin drives the data input of the register; and (3) the input pin does not fan-
out to any other logic. If this option is specified for an output or bidirectional pin, it is automatically
transferred to the register that feeds the pin if: (1) there is no intervening logic, other than inversion,
between the register and the pin; and (2) the register does not fan-out to any other logic. You can assign
this option to any register, or to a pin with any logic configuration other than those described above. You
can also assign this option to a design entity containing registers if you want to set the power level for all
registers in the design entity. In order for the register to power up with the specified logic level, the
Compiler may perform NOT Gate Push-Back on the register.
Type
Enumeration
Values
• High
• Low
Device Support
This setting can be used in projects targeting any Altera device family.
Notes
This assignment supports synthesis wildcards.
Syntax
set_global_assignment -name POWER_UP_LEVEL -entity <entity name> <value>
set_instance_assignment -name POWER_UP_LEVEL -to <to> -entity <entity name>
<value>
Example
set_instance_assignment -name power_up_level low -to foo
See Also
Power-Up Don't Care
MNL-Q21005
2015.05.04
POWER_UP_LEVEL 145
Quartus Settings File Reference Manual Altera Corporation
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