Ethernet Encoding schemes

Hi All,

I want some guidence for encoding schemes used in ethernet

I know that for gigabit ethernet mostly the 8b10b encoding scheme is
used
and also I have heard about 64b/66b scheme.

which one is actually used....?

If I need to send my data on ethernet which one I should use and while
receiving any data, is there any method for detecting that the
receiving data is coded in which scheme...?

Thanks & Regards 
Kedar

>Hi All,
>
>I want some guidence for encoding schemes used in ethernet
>
>I know that for gigabit ethernet mostly the 8b10b encoding scheme is
>used
>and also I have heard about 64b/66b scheme.
>
>which one is actually used....?
>
>If I need to send my data on ethernet which one I should use and while
>receiving any data, is there any method for detecting that the
>receiving data is coded in which scheme...?
>
>Thanks & Regards 
>Kedar
>
>
For Gigabit ethernet, two encodings are used
for 1000Base-x , 8b10b ;and
for 1000Base-T , 4D PAM5.

64b/66b is used for 10G. Not for 1G.
Regards.
JOSE