Quartus II Settings File Reference Manual - Altera

6–274 Chapter 6: Fitter Assignments
PROGRAMMABLE_POWER_TECHNOLOGY_SETTING
PROGRAMMABLE_POWER_TECHNOLOGY_SETTING
Type
Controls how the Fitter configures tiles to operate in high-speed mode or low-power
mode. Automatic specifies that the Fitter should try to minimize power without
sacrificing timing performance. Minimize Power Only specifies that the Fitter should
set the maximum number of tiles to operate in low-power mode. Force All Tiles with
Failing Timing Paths to High Speed specifies that the Fitter should ensure that all
paths that are failing timing are set to high-speed mode. For designs that meet timing,
the behavior of this setting should be similar to the Automatic setting. For designs
that fail timing, all paths with negative slack is put in high-speed mode. This does not
likely increase the speed of the design. Although it may increase static power
consumption, it may assist in determining which logic paths need to be re-designed in
order to close timing.
Enumeration
■ Automatic
Device Support
■ Force All Tiles with Failing Timing Paths to High Speed
■ Minimize Power Only
This setting can be used in projects targeting the following device families:
■ Arria II GZ
■ Stratix III
■ Stratix IV
■ Stratix V
Notes
This assignment is included in the Fitter report.
Syntax
set_global_assignment -name PROGRAMMABLE_POWER_TECHNOLOGY_SETTING
Default Value
Force All Tiles with Failing Timing Paths to High Speed
Quartus Settings File June 2012 Altera Corporation
Reference Manual