Thanks to all who replied!
the "hybrid" transceivers are the answer to my question!
thanks and regards
Hermann
Our next Events:
Seminar "Open the Black Box of Memory" (17.-18.08.2015 and 20.-21.08.2015) in
Penang and Bangalore
EKH - EyeKnowHow
Hermann Ruckerbauer
www.EyeKnowHow.de
Hermann.Ruckerbauer@xxxxxxxxxxxxx
Itzlinger Strasse 21a
94469 Deggendorf
Tel.: +49 (0)991 / 29 69 29 05
Mobile: +49 (0)176 / 787 787 77
Fax: +49 (0)3212 / 121 9008
Am 14.05.2015 um 16:01 schrieb Ramesh N:
Hello Hermann,
1000Base-T uses bidirectional Transceivers. In addition to this,
addional filtering in included in receivers to remove tx components.
This link provides brief explanation on this (p11).Hope this is helpful...
http://www.dveo.com/pdf/GEA1000BASET1197_rev-wp.pdf
Best regards,
Ramesh
On Thursday, May 14, 2015, Hermann Ruckerbauer
<Hermann.Ruckerbauer@xxxxxxxxxxxxx
<mailto:Hermann.Ruckerbauer@xxxxxxxxxxxxx>> wrote:
Hello *,
I know i can do some more homework on this one .. but I hope somebody
can provide a hint where to start (the Ethernet spec is very
comprehensive ;-) )
100Mb Ethernet (BASE-T) does have a RX and TX pair ... so full Duplex
seems quite simple as TX and RX direction can be handeled
independently ...
I did quite some reading on Gigabit Ethernet (1000Base-T) and do
(partly) understand how we get the Gigabit Transferrate on 4 pairs by
coding.
What I have not found: How is this "Full duplex" done ?
There are no dedicated RX/TX wires, so either this is done
"Bidirectional" and write / Read "time slots" (allowing only 1Gb
in one
direction), or simultanious bidirectional by subtracting sent from
received data ( allowing 1Gb TX + 1Gb RX = 2Gb transferrate in both
direction (what would be my understanding of "Full duplex) )
Or there might be another way to implement full duplex if all 4
wirepairs are used for one direction ..
If anybody could tell me what too look for in the ethernet spec
(or give
a short explanation) this would be very much appreciated ..
Thanks and regards
Hermann
Our next Events:
Seminar "Open the Black Box of Memory" (17.-18.08.2015 and
20.-21.08.2015) in Penang and Bangalore
EKH - EyeKnowHow
Hermann Ruckerbauer
www.EyeKnowHow.de <http://www.EyeKnowHow.de>
Hermann.Ruckerbauer@xxxxxxxxxxxxx
Itzlinger Strasse 21a
94469 Deggendorf
Tel.: +49 (0)991 / 29 69 29 05
Mobile: +49 (0)176 / 787 787 77
Fax: +49 (0)3212 / 121 9008
------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx <javascript:;> with 'unsubscribe' in
the Subject field
or to administer your membership from a web page, go to:
//www.freelists.org/webpage/si-list
For help:
si-list-request@xxxxxxxxxxxxx <javascript:;> with 'help' in the
Subject field
List forum is accessible at:
http://tech.groups.yahoo.com/group/si-list
List archives are viewable at:
//www.freelists.org/archives/si-list
Old (prior to June 6, 2001) list archives are viewable at:
http://www.qsl.net/wb6tpu
