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W89C940 Datasheet(PDF) 1 Page - Winbond |
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W89C940 Datasheet(HTML) 1 Page - Winbond |
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1 / 61 page  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(ELANC- PCI) 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 instance anti-virus, popular drivers, Boot ROM, viewing your PC assets...etc., and what is more, these software are able to be updated on line. This can increase more niche feature on your LAN card, help you get more and bright your company profile. W89C940F is a single chip - build-in PCI bus interface and all necessary circuits - which will let design and board assembly become easy. FEATURES • Fully compatible with IEEE 802.3 standard • Software compatible with Novell NE2000 • Complies with PCI Local Bus Specification Revision 2.0 • Slave Mode for PCI bus • Fast DMA operation enhancing network access performance • AUI, UTP interface available • Supports one chip 32Kx8 and 16Kx8 SRAM • Supports up to 64KB boot ROM • EEPROM auto-load function after power on reset • EEPROM on-board programming function available • UTP interface polarity auto detection correction function available • UTP/BNC auto media-switching function provided • LED displaying for network segment Link/activity status • Signature register available for device identification • Single 5V power supply with low power consumption • 100 Pin PQFP |
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