W89C840AF

www.DataSheet4U.com W89C840AF Winbond LAN W89C840AF 100/10Mbps Ethernet Controller www.DataSheet4U.com -1 Publication Release Date:October 2000 Revision 1.01 www.DataSheet4U.com W89C840AF www.DataSheet4U.com -2 Publication Release Date:October 2000 Revision 1.01 www.DataSheet4U.com W89C840AF W89C840AF 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 utilitzation. The on-chip DMA controller handles the data transfer between the host memory and the FIFOs. The data received from network are queued into the receive FIFO and then, directly moved into the host memory through the PCI bus. On the other hand, the transmitted data are fetched from the host memory and directly queued into the transmit FIFO. No extra on-board memory is needed for data buffering during the data transceiving operation. For featuring the specifications of PC97/98, W89C840AF implements power management functinos which are compliant with Advanced Configuration and Power Interface ( ACPI) specification Rev. 1.0, PCI Power Management Interface specification Rev. 1.0, and Network Device Class Po...