W89C940

www.DataSheet4U.com W89C940 ELANC-PCI (TWISTED-PAIR ETHER-LAN CONTROLLER WITH PCI INTERFACE) GENERAL DESCRIPTION he ELANC-PCI (Twisted-pair Ether-LAN Controller with PCI Interface) integrates a W89C902 Serial(ELANCPCI) LAN Coprocessor for Twisted-Pair (SLCT) and PC/AT PCI bus interface logic into a single chip. The ELANC-PCI provides an easy way of implementing the interface between an IEEE 802.3-compatible Ethernet and a personal computer, ELANC-PCI also provide fast DMA operation to improve the packet transmit and receive performance. The PCI bus is a high performance local bus architecture with low latency random access time. It is a synchronous bus with operation up to 33MHz. The PCI bus interface is designed to provide the registers with the device information required for configuration, recording the status of the lines , control registers, interrupt line and I/O base address registers. It is capable of functioning in a half-duplex environment. The W89C940Fis designed to fully comply with the standard of PCI 2.0 specification. Taking advantage of PCI's nature, W89C940F supports auto-configuration function to free users' depression and confusion on tunning system resources conflict. With extremely high throughput on PCI bus, W89C940F offers a 32 bits data path to highly boost its performance without extra cost. Comparing with LAN card with ISA bus, its improvement is excellent. Besides, it also supports up to 256KB flash memory reserved for various applications, for in...