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Altera_Forum
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14 years ago

Stratix IV GXB Refclk IO standard settings

Hi there, I am trying to set the IO standard for a refclk input for a GXB bank in Stratix IV EP4SGX230KF40F1517 by using the following constraint: set_instance_assignment -name IO_STANDARD...
Altera_Forum's avatar
Altera_Forum
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14 years ago

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From the Example 2 on p.g. 2-14, I suspect that I have to add location constraints for specify which PLL to use...

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I didn't have to provide a location constraint. Though I am also routing the reference clock to a transceiver block - perhaps that makes a difference.

Cheers,

Dave