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Altera_Forum's avatar
Altera_Forum
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12 years ago

problem with "commas and word alignement"

hello, i'm student and i'm working on the receiver parts of "SERDES" ,my program is in VHDL. for explain my project, I receive a incoming serial data. In the first time, i use a PRBS for...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
12 years ago

The word alignment needs to be done in the deserializer, before the decoder.

If the 8B/10B protocol is implemented correctly and you do send K28.7 symbols, whenever you have a 11_00000_xxx or 00_11111_xxx word in the deserializer, you have a properly aligned word.

So, you make your deserializer look for those words to find alignment and keep the alignment for any other words.