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Altera_Forum's avatar
Altera_Forum
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16 years ago

max CID length for transceivers

Does anyone know what is the max CID (consecutive identical digits) length the CDR can tolerate before it loses its lock on the incoming data? I've been reading through the docs for the Stratix IV t...
Altera_Forum's avatar
Altera_Forum
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16 years ago

So what happens if I'm not using 8b/10b encoding? There must be some CID length specified somewhere that the CDR can tolerate, right? The transceivers have the option to not include 8b/10b in the path so there must be some limit on the CID run length before the CDR loses its lock on the data. Any idea where I can find this run length number?