To carry frame data and link rate information between a 10/100/1000 PHY and an Ethernet MAC, SGMII uses a differential pair for data signals and for clocking signals, with both being present in each direction (i.e., transmit and receive), giving 8 signal lines in total.
XAUI is a standard for extending the XGMII (10 Gigabit Media Independent Interface) between the MAC and PHY layer of 10 Gigabit Ethernet (10Gb E).
We saw several people pointing from shore and their boats, and I also think I saw someone with a camera at the beach snapping photos.
Now I have been a little curious as to why in the period of 10 years I had only seen one other sailboat on the lake ( a Hobie 18 in 1997).
I chalked it up to East Fork's powerboat reputation (and the lack of dock spaces). In between the lakes' 2 main launch ramps is a penninsula containing the swimming beach.
This land apparently created a riff in the wind and caused it to bend around it and blow away from the second ramp as well (this ramp and ours were on opposite sides of the lake).
The Media Independent Interface (MII) is a standard interface used to connect a Fast Ethernet (i.e. The MII may connect to an external transceiver device via a pluggable connector (see photo) or simply connect two chips on the same printed circuit board.
Being media independent means that any of several different types of PHY devices can be used without redesigning or replacing the MAC hardware.
RGMII supports Ethernet speeds of 10 Mbit/s, 100 Mb/s and 1000 Mbit/s.
The Serial Gigabit Media Independent Interface (SGMII) is a sequel of MII, a standard interface used to connect an Ethernet MAC-block to a PHY.
The interface defines speeds up to 1000 Mbit/s, implemented using an eight bit data interface clocked at 125 MHz, and is backwards compatible with the Media Independent Interface (MII) specification.
It can also operate on fall-back speeds of 10/100 Mbit/s as per the MII specification.
XAUI is pronounced "zowie", a concatenation of the Roman numeral X, meaning ten, and the initials of "Attachment Unit Interface".