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Quartus II Settings File Reference Manual - Altera

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Chapter 6: Fitter Assignments 6–295<br />

RESERVE_DCLK_AFTER_CONFIGURATION<br />

RESERVE_DCLK_AFTER_CONFIGURATION<br />

Type<br />

Specifies how the DCLK pin should be used when the device is operating in user<br />

mode after configuration is complete. Depending on the current device and<br />

configuration scheme, the DCLK pin can be reserved as a regular I/O pin, as a<br />

dedicated programming pin, or compiler configured. If this pin is reserved as a<br />

regular I/O pin, the DCLK pin can be used as an ordinary output pin after<br />

configuration. If the DCLK pin is only used to interface with external memory for<br />

configuration, the DCLK pin should be reserved as compiler configured.<br />

Enumeration<br />

Device Support<br />

■ Compiler configured<br />

■ Use as programming pin<br />

■ Use as regular IO<br />

This setting can be used in projects targeting the following device families:<br />

■ Cyclone <strong>II</strong>I<br />

■ Cyclone <strong>II</strong>I LS<br />

■ Cyclone IV E<br />

■ Cyclone IV GX<br />

Syntax<br />

set_global_assignment -name RESERVE_DCLK_AFTER_CONFIGURATION <br />

Example<br />

set_global_assignment -name RESERVE_DCLK_AFTER_CONFIGURATION "USE AS<br />

REGULAR IO"<br />

Default Value<br />

Use as programming pin<br />

June 2012 <strong>Altera</strong> Corporation <strong>Quartus</strong> <strong>Settings</strong> <strong>File</strong><br />

<strong>Reference</strong> <strong>Manual</strong>

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