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W89C940 Datasheet

  • W89C940

  • ELANC-PCI (TWISTED-PAIR ETHER-LAN CONTROLLER WITH PCI INTERF...

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  • WINBOND

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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
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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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