Prenos ethernetu pres LEDku a PIN diodu ?

[Lubor Otta]

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Ja ten problem se sitovkou nesleduju od zacatku, ale proc se vlastne =
nepripojis na RJ konektor? Potom bys mohl vyuzivat prenosy v plnem =
duplexu, coz na ethernetu neni mozne, ale tvuj prenosovy kanal by to zda =
se zvladnul?
Lubor

----------
Od:	Karel Kulhavy
Odesl=E1no: 	13. =F8=EDjna 2000 11:34
Komu:	Multiple recipients of list
P=F8edm=ECt: 	Prenos ethernetu pres LEDku a PIN diodu ?

Jak jsem se ptal na tu stejnosmernou slozku na TP -- opravdu to vypada, =
ze ji
tam neni potreba prenaset. Ale zda se, ze vysilac ma 3 stavy -- nulove =
napeti
(nevysila se), +U (vysila se) a -U(vysila se). Ja mam LEDku a fotodiodu =
se
zesilovacem (ktery neprenasi stejnosmernou slozku -- filtruje okolni
stejnosmerne osvetleni) a buzeni LEDky umi pouze zapnuto a vypnuto. Da =
se na
tohle narazit TP (predpokladejme, ze mam dostatecne nizky sum a =
dostatecnou
sirku pasma)?  Mohu v pripade, ze se nevysila, do prijimajici sitovky =
krmit
jednu ze dvou urovni a spolehat se, ze mi to nezdeformuje pocatecni =
impulsy v
paketu a ta sitovka se z toho nezblazni?

Cili retezec by vypadal takto: TP vysilajici strana -> komparator =
nastaveny k
jedne strane a by pri neaktivnim vysilaci mel na vystupu stabilne jednu =
uroven
-> TTL budic LEDky -> vzduch -> prijimac s PIN diodou -> komaprator =
nastaveny k
jedne strane -> budic TP kabelu -> prijimajici TP sitovka.

Samozrejme by retezec musel bejt 2x, pro kazdy smer jeden.

Clock


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