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Altera_Forum
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11 years ago

How to assign LVDS emulated pins on Cyclone V

I am trying to assign LVDS emulated pins to outputs of my top level design. I am using an ALTLVDS_TX component to be able to send my outputs in LVDS format. In the Assignment Editor, I assign pi...
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Altera_Forum
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11 years ago

Are three of those pins in a bank with other I/O operating at a different voltage? Ensure all the I/O in the bank you're constraining your I/O to are 2.5V compatible.

Which device is it and which bank are you targeting? Are you targeting a bank that features true LVDS drives? I suspect you can place emulated LVDS drivers in these banks, but it's worth checking.

If you remove all your I/O placement, does Quartus fit it? Always worth trying as a sanity check.

Cheers,

Alex