I don't think this is the case. One can get a PLD with two 2.5G SERDES that can
do all the 'processing', and is probably the same part people will use for 1G.
True, if you have an ASIC today it is probably a re-spin, but if one is starting
from a clean sheet then optics and mechanicals dominate the
I'd like to add that
the cost of an entire ONU should
be in the sub-$500 range by late next year.
If you add the cost of the electronics
and processing required to terminate a 2.5 Gbps data stream, I seriously
doubt this is achievable.
mentions the most important thing here is cost.
main ONU costs today lies on the optic, where rates above 622Mbps upstream
requires expensive lasers in order to maintain the required distance and
split. Moving to 2.5 Gbps upstream will result in very expensive