W110

The W110 is a 100BASE-T Ethernet Media Access Controller (MAC) mega macrofunction for dual-speed operation (100Mbps/10Mbps) and an MII interface. Implemented in 0.5m and 0.8 m technologies, the W110 supports a wide range of physical layer (PHY) devices, including both 100Mbps and 10Mbps devices for wired, optical, and wireless networks, operating in half- or full-duplex mode.

The W110 mega macrofunction is available in various configurations, depending upon customer partitioning requirements. The W110 contains two main submodules, called MAC110 and PCS110. The MAC110 submodule contains the key transmit/receive functions and performs the CSMA/CD function specified in ISO/IEC 8802-3: 1993 and the supplemental IEEE standard 802.3u-1995. The PCS110 submodule contains various PHY support modules and MII support.

Potential applications include network interface controllers (NICs), multiport switches, switching routers,hubs, and test equipment.

The MAC110 submodule contains ~10.1k gates. The final top-level gate count is determined by which particular PCS option is chosen by the user. The W110M option (transmit and receive function with MII interface only) contains ~7.1k gates. A gate-level model of the mega macrofunction is available in Verilog or VHDL.