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Quartus II Settings File Reference Manual - Altera

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Chapter 4: Analysis & Synthesis Assignments 4–59<br />

DQS_SYSTEM_CLOCK<br />

DQS_SYSTEM_CLOCK<br />

Type<br />

Specifies the clock input used as a frequency reference for a DQS I/O pin. The clock is<br />

the pin that drives the DDIO circuitry for the dedicated DDR SDRAM interface.<br />

String<br />

Device Support<br />

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

■ Stratix<br />

■ Stratix GX<br />

Notes<br />

The value of this assignment is case sensitive.<br />

Syntax<br />

set_instance_assignment -name DQS_SYSTEM_CLOCK -to -entity <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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