[139191] in North American Network Operators' Group
XGMII interface
daemon@ATHENA.MIT.EDU (yifeng zhou)
Tue Mar 29 08:27:13 2011
Date: Tue, 29 Mar 2011 15:27:09 +0300
From: yifeng zhou <zhuifeng0426@gmail.com>
To: nanog@nanog.org
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
Dears:
As in IEEE 802.3 clause 46, in 10G Ethernet, RS and PCS may use XGMII
interface to inter-connect.
XGMII interface is a 32-bit wide, transmit & receive data path, working on
frequency of 156.25HZ. So, for transmit direction, the total transmit rate
should be 32*156.25=5Gbps, how 10G works with this interface?
Further, on PMA, the transmit rate become 312.5M characters per lane.. how
done this number come?
thanks!
