The Marvell 88E2010 is one of the only multi-gigabit Ethernet phys I that are available through the major distributors.
The 88E2010 product brief on their web site (https://www.marvell.com/content/dam/marvell/en/public-collateral/phys-transceivers/marvell-phys-transceivers-alaska-88e20xx-product-brief-2016-02.pdf) says:
The devices support a variety of host interfaces (2500BASE-X, 5000BASE-R, SGMII), as well as 10G host interfaces such as USXGMII interface and XFI/RXAUI with Rate-Matching.
But the data sheet (https://www.marvell.com/content/dam/marvell/en/public-collateral/phys-transceivers/marvell-phys-transceivers-alaska-m-88e20xxl-datasheet.pdf) doesn't mention USXGMII or any other 10G interface. instead it says:
The host side interface comprises two differential input lanes SIP[1:0]/SIN[1:0] and two differential output lanes SOP[1:0]/SON[1:0]. They are designed to operate over short backplanes to the host device.
These lanes can be arranged to form SGMII, 1000BASE-X, 2500BASE-X, and 5GBASE-R
The datasheet does describe a "5GBASE-R/2500BASE-X" protocol, but the speed of this is somewhat unclear. It might be 10G, as the 5G protocol is described as "5GBASE-R is identical to 5GBASE-R/2500BASE-X as described in Section 5.2.1, 5GBASE-R/2500BASE-X
except at 50% speed."
Does anyone have further insight into this?
Thanks,
-Jonathan