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Altera_Forum
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15 years ago

Altera transceiver bits swapped

Hi all. I'm working on a simple transceiver loopback test using a stratixIV GX development kit. I instantiated a simple ALTGX function in basic (PMA direct) mode, and i attached the altera lo...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

this isnt a bug, you need to bitslip the data until it is aligned. generally there is a training sequence that is either spec'ed by the protocol, or is user specific.