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Altera_Forum
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13 years ago

Cyclone 4 GX - Transceiver - EPCS-pins cannot be used?

Hi, we have a prototype board where we want to use REFCLK4 (Pin L10, F27-package) as reference-clock for a transciever. Now it turned out that we cannot access the EPCS-pins anymore when we use...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

How are you interfacing to the EPCS pins?

Have you tried specifying them as "Use as regular I/O", and then setting the toggle constraint?

Cheers,

Dave