Altera Quartus II Settings File - Manual (Page 499)

DEVICE_INITIALIZATION_CLOCK
Specifies the clock source for device initialization (the duration between CONF_DONE signal went high
and before INIT_DONE signal goes high).Three options are available when AS x1 or AS x4 configuration
mode is not selected, which are Internal Oscillator (default value), DCLK pin, and CLKUSR pin. For AS
x1 or AS x4 configuration mode, you can select either the Internal Oscillator or CLKUSR pin only. The
DCLK pin is an illegal option for AS mode.
Type
Enumeration
Values
• INIT_CLKUSR
• INIT_DCLK
• INIT_INTOSC
Device Support
This setting can be used in projects targeting any Altera device family.
Notes
This assignment is included in the Fitter report.
Syntax
set_global_assignment -name DEVICE_INITIALIZATION_CLOCK <value>
Default Value
INIT_INTOSC
Example
set_global_assignment -name DEVICE_INITIALIZATION_CLOCK "CLKUSR"
See Also
USER_START_UP_CLOCK
MNL-Q21005
2015.05.04
DEVICE_INITIALIZATION_CLOCK 499
Quartus Settings File Reference Manual Altera Corporation
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