NWK914D - PHY/PMD High Speed Copper Media Transceiver
The functional blocks within the device are shown in Fig.
3.
These are described below:NRZ to MLT3 Encoder The serial data from the shifter then passes through an encoder which converts the NRZI binary data into the three level MLT-3 format for transmission by the 'TXO' outputs.
Transmit Line Driver
NWK914D NWK914D PHY/PMD High Speed Copper Media Transceiver Preliminary Information DS4829 - 1.1 December 1997 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 th
NWK914D Features
* s Compatible with IEEE-802.3 Standards s Operates over 100 Meters of STP and Category 5 UTP cable s Five Bit TTL Level Symbol Interface s Integrated Clock and Data Recovery s Supports Full-duplex Operation s Integral 10 Mb/s Buffer for Dual 10 Mb/s & 100 Mb/s Applications s Adaptive Equalization s 2
