GENERAL DESCRIPTION
The PCnet-PCI single-chip 32-bit Ethernet controller is a highly integrated Ethernet system solution designed to address high-performance system application requirements. It is a flexible bus-mastering device that can be used in any application, including network-ready PCs, printers, fax modems, and bridge/router designs.

DISTINCTIVE CHARACTERISTICS
■Single-chip Ethernet controller for the Periph eral Component Interconnect (PCI) local bus
■Supports ISO 8802-3 (IEEE/ANSI 802.3) and Ethernet Standards
■Direct interface to the PCI local bus
■Compliant to PCI local bus specification(Revision 2.0)
■Software compatible with AMD’s Am7990
   LANCE, Am79C90 C-LANCE, Am79C960
   PCnet-ISA, Am79C961 PCnet-ISA+, Am79C965
   PCnet-32, and Am79C900 ILACC^TM register and descriptor architecture
■Compatible with Am2100/Am1500T and Novell NE2100/NE1500 driver software
■High-performance Bus Master architecture with integrated DMA Buffer Management Unit for low CPU and bus utilization
■Big endian byte alignment supported
■Single +5 V power supply operation
■Low-power, CMOS design with sleep modes allows reduced power consumption for critical battery powered applications and Green PCs
■MicrowireTM EEPROM interface supports jumperless design
■Individual 136-byte transmit and 128-byte receive FIFOs provide frame buffering for increased system latency, and support the following features:
— Automatic retransmission with no FIFO reload
— Automatic receive stripping and transmit padding (individually programmable)
— Automatic runt packet rejection
— Automatic deletion of received collision frames
■Look-Ahead Packet Processing (LAPP) concept allows protocol analysis to begin before end of receive frame
■Integrated Manchester Encoder/Decoder
■Provides integrated Attachment Unit Interface (AUI) and 10BASE-T transceiver with automatic port selection
■Automatic Twisted-Pair receive polarity detection and automatic correction of the receive polarity
■Optional byte padding to long-word boundary on receive
■Dynamic transmit FCS generation programmable on a frame-by-frame basis
■Internal/external loopback capabilities
■Supports the following types of network interfaces:
— AUI to external 10BASE2, 10BASE5,10BASE-T or 10BASE-F MAU
— Internal 10BASE-T transceiver with Smart Squelch to Twisted-Pair medium
■NAND Tree test mode for connectivity testing on printed circuit boards
■132-pin PQFP package