The TenGiPHY-W is a single chip transceiver IC for 10 Gbit/s Ethernet and Fibre Channel connectivity. It offers a serial, full duplex 10 Gbit/s interface to an optical sub-module. The integrated CDR and CMU operate at data rates between 9.95328 and 10.51875Gbit/s. The TenGiPHY-W provides the XGXS, PCS and PMA sublayers of the 10G Ethernet and Fibre Channel standards. For WAN applications a standard OC-192/STM-64 SONET/SDH framer together with flexible clocking modes enables a direct connection to the public network without additional components. The networking system can control the chip via a narrow-width MDIO interface by writing and reading its control and status registers.