100/10Mbps Ethernet Controller

The W89C840F is a highly integrated Ethernet LAN controller for both 100BaseT and 10BaseT Ethernet. It provides a host bus interface complying with the PCI local bus specification revision 2.1, and the MII interface complying with the IEEE802.3u standard for easily implementing an Ethernet LAN adapter. The built-in 2K bytes transmit FIFO and 4K bytes receive FIFO, controlled by the on-chip bus master, are designed for improving network performance and reducing the host bus utilization.

FEATUREs
● Complies with IEEE 802.3, 802.3u, ANSI 8802-3 and Ethernet standards
● Supports PCI bus master mode for DMA operation, fully complying with PCI 2.1 standard
● Early interrupt function available for both transmit and receive
● Both half duplex and full duplex available
● Independent deep receive and transmit FIFO and no onboard memory required
● Flexible data structure for host compatibility and system performance
● Supports 25 to 33 Mhz PCI clock speed
● Supports full MII management function
● Provides EEPROM and flash memory on-board programming function
● Supports both big and little endian byte ordering for descriptor and buffer
● Flexible address filtering modes
   -- 64-bit hash-table and one perfect address
   -- All multicast and promiscuous
● A boot ROM interface, capable of supporting up to 256KB
● Supports programmable sub-vendor ID with automatic loading into configuration register
● Internal and external loopback mode for diagnostic
● Single 5 volt power supply
● 100 pins PQFP package