nanog mailing list archives
Re: XGMII interface
From: yifeng zhou <zhuifeng0426 () gmail com>
Date: Tue, 29 Mar 2011 15:52:28 +0300
Thanks Joel. Now i can understand :) 2011/3/29 Joel Jaeggli <joelja () bogus com>
check your xgmii specs... it's ddr so there is a bit on both clock rise and fall. http://en.wikipedia.org/wiki/10_Gigabit_Media_Independent_Interface On 3/29/11 5:27 AM, yifeng zhou wrote: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, workingonfrequency of 156.25HZ. So, for transmit direction, the total transmitrateshould be 32*156.25=5Gbps, how 10G works with this interface? Further, on PMA, the transmit rate become 312.5M characters per lane..howdone this number come? thanks!
Current thread:
- XGMII interface yifeng zhou (Mar 29)
- Re: XGMII interface Joel Jaeggli (Mar 29)
- Re: XGMII interface yifeng zhou (Mar 29)
- Re: XGMII interface Joel Jaeggli (Mar 29)