XGMII interface


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?


check your xgmii specs...

it's ddr so there is a bit on both clock rise and fall.


Thanks Joel. Now i can understand :slight_smile: