From: Greim, Michael (firstname.lastname@example.org)
Date: Mon Mar 13 2000 - 05:21:27 PST
You raise an interesting issue. When is DC
balancing required in a circuit? I was talking
with some folks last week regarding a serdes
that provides an interface between 4 622 LVDS
pairs and 2.5G copper interface. The case was
being made that this was just a straight con-
version without encoding, and that this wasn't
required. I imagine that this has alot to do with
the medium and distance. Are there any rules
or experiences that folks have had with these
> Tom offers perhaps a good alternative. However, your data must be
> DC balanced with 8b/10b coding, for example. Also, I'm not sure
> if LVDS will be happy with no DC path between true and complement.
> It seems viable, but I'd recommend simulating this approach.
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