Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

AltLVDS_RX weird data patterns

Hello, My problem is the following: I am using the ALTLVDS_RX megafunction on a Cyclone V, without DPA, but on the side of the FPGA where dedicated SERDES circuitry is supported(on the b...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

It seems now that the problem was that I did not set the Input Termination setting in the Pin Planner to Differential. I thought that termination would default to differential if an LVDS connection is used as it is a differential protocol, but it seems that it was not the case.