Quartus II Settings File Reference Manual - Altera

Chapter 4: Analysis & Synthesis Assignments 4–139
POWER_UP_LEVEL
POWER_UP_LEVEL
Type
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:
■ There is no intervening logic, other than inversion, between the pin and the
register
■ The input pin drives the data input of the register
■ 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 the following conditions are present:
■ There is no intervening logic, other than inversion, between the register and the
pin
■ 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 previously described. 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.
You can assign this option to any register, registered logic cell WYSIWYG primitive, or
to a pin with any logic configuration other than those described above. If this option is
assigned to a registered logic cell WYSIWYG primitive, you must turn on the Perform
WYSIWYG Primitive Resynthesis logic option for it to take effect. 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.
Enumeration
■ High
■ Low
Device Support
This setting can be used in projects targeting any Altera device family.
Notes
This assignment supports wildcards.
Syntax
set_global_assignment -name POWER_UP_LEVEL -entity
set_instance_assignment -name POWER_UP_LEVEL -to -entity
June 2012 Altera Corporation Quartus Settings File
Reference Manual