Altera Quartus II Settings File - Manual (Page 619)

IO_MAXIMUM_TOGGLE_RATE
Specifies the toggle rate of this node. You can specify the desired frequency setting. This option is ignored
if it is applied to anything other than pins. This option can be used to direct the Fitter in its toggle-rate
checking while allowing a single-ended pin to be placed closer to a differential pin. This assignment is
used to analyze signal integrity under worst case conditions (highest possible toggle rate). A different
assignment, Power Toggle Rate, is used to specify the expected time-averaged toggle rate rather than
worst-case toggle rate, and is used by the Power Analyzer to estimate time-averaged power consumption.
Use the Synchronizer Toggle Rate if you want to configure the data rates used for Metastability Reporting
in the TimeQuest Timing Analyzer.
Old Name
TOGGLE RATE, TOGGLE_RATE
Type
Frequency
Device Support
This setting can be used in projects targeting any Altera device family.
Notes
This assignment supports Fitter wildcards.
Syntax
set_instance_assignment -name IO_MAXIMUM_TOGGLE_RATE -to <to> -entity
<entity name> <value>
MNL-Q21005
2015.05.04
IO_MAXIMUM_TOGGLE_RATE 619
Quartus Settings File Reference Manual Altera Corporation
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