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Posted by Marris on March 10, 2007, 3:05 pm
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The Ten Bit Interface is connected to SerDes (serialiser/deserialisers)
which transport data serially at 1.25G/s. As the data has been 8 bit to 10
bit encoded this is equivalent to a 1 Gbs throughput.
Two SerDes can be connected directly to each other or to opto-electronics
for fibre optic transmission.
You can find more information in Clause 36 of IEEE 802.3
>I am looking today at the different ways to connect a MAC with a PHY.
> I found a lot of things, which I summarise here:
>
> Protocol --- Eth. Speed --- Signale --- Clock speed
> MII --- 10/100 --- 16 --- 2,5 / 25 MHz
> RMII --- 10/100 --- 6 / 7 --- 5 / 50 MHz
> SMII --- 10/100 --- 4 --- 125 MHz
> GMII --- 10/100/1000 --- 27 --- 125 MHz
> RGMII --- 10/100/1000 --- 12 --- 2,5 / 25 / 125 MHz
> SGMII --- 10/100/1000 --- 4 diff.pairs --- 625 MHz (clk) / 1,25 GHz
> (data)
>
> Unfortunatly, I am missing infos about the Ten Bit Interfaces TBI and
> RTBI. According to a paper from HP (http://www.hp.com/rnd/pdfs/
> RGMIIv2_0_final_hp.pdf) page 3, it seems that there are just a few
> differences between RTBI and RGMII. What about TBI and GMII?
>
> I didn't found any specs fot TBI oder RTBI on the net. Does anyone
> know more about them?
>
> have a nice week-end :-)
> Francis
>
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