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Altera_Forum
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12 years ago

LVDS TX as LVDS receiver in Cyclone V

Hello, In a new design I have to interface a few 8-channels ADCs to a Cyclone V GX C9F31.The ADCs use LVDS signaling at 240 MHz DDR. In a previous design I've used Cyclone IV and any LVDS pair c...
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Altera_Forum
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12 years ago

Yes, this really is the case. You will not be able to drive a differential signal into a DIFFIO_TX_xxx channel. Differential input signals will have to go into DIFFIO_RX_xxx pins.

Note: emulated LVDS does allow DIFFIO_RX_xxx pins to be driven.