rtl8019 pdf datasheet

The RTL8019AS is a highly integrated Ethernet Controller which offers a simple solution to
implement a Plug and Play NE2000 compatible adapter with full-duplex and power down features.
With the three level power down control features, the RTL8019AS is made to be an ideal choice of
the network device for a GREEN PC system. The full-duplex function enables simultaneously
transmission and reception on the twisted-pair link to a full-duplex Ethernet switching hub. This
feature not only increases the channel bandwidth from 10 to 20 Mbps but also avoids the
performance degrading problem due to the channel contention characteristics of the Ethernet
CSMA/CD protocol. The Microsoft's Plug and Play function can relieve the users from pains of
taking care the adapter's resource configurations such as IRQ, I/O, and memory address, etc.
However, for special applications not to be used as a Plug and Play compatible device, the
RTL8019AS also supports the jumper and proprietary jumperless options.