The NWK914D is a Physical Layer device designed for use in 100BASE-TX applications. The NWK914D has integrated the 100mb/s transceiver, clock and data recovery and NRZI conversion circuitry. It is designed for use in cost effective NIC adapter cards and 100BASE-TX repeater and switch applications.

The device connects through a 5 bit symbol interface directly with any MAC controller that includes the PCS layer, resulting in a simple and cost effective solution. It will also interface with a PCS device such as the NWK935 to form a complete 100BASE-TX Physical Layer for connection to the IEEE 802.3 standard MII interface.

FEATURES

■ Compatible with IEEE-802.3 Standards

■ Operates over 100 Meters of STP and Category 5 UTP cable

■ Five Bit TTL Level Symbol Interface

■ Integrated Clock and Data Recovery

■ Supports Full-duplex Operation

■ Integral 10 Mb/s Buffer for Dual 10 Mb/s & 100 Mb/s Applications

■ Adaptive Equalization

■ 25MHz to 125MHz Transmit Clock Multiplier

■ Programmable TX Output Current

■ Base Line Wander Correction

■ Single +5V supply

■ 52 Pin PQFP package