Computer network bridge circuit

Details Computer network bridge circuit Computer network bridge circuit

1992-03-06

1993-09-14

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 92, 34082552, H04L 1246

Patent

active

052456064

ABSTRACT:
A media access controller is provided by the present invention. A feature of the media access controller of the present invention is a content addressable memory architecture whereby address filtering is provided for filtering physical, group and broadcast addresses on an Ethernet network. Another feature of the present invention is an interface architecture capable of supporting external address filters which in turn are capable of supporting spanning tree and source routing algorithms. Still another feature of the present invention is a CRC checker having improved testability such that burdensome computations for input bit test patterns are no longer required. Still another feature of the present invention is a first-in, first-out memory register having validity bits associated with each stored data byte, such that data bytes may be indiscriminately stored, regardless of their validity, and invalid data bytes are discarded during retrieval of the stored data bytes.

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Advanced Micro Devices' data sheets (pp. 1-28) for "Am99C10 256.times.48 Content Addressable Memory".
Advanced Micro Devices' data sheets (pp.1-20) for "Am7992B Serial Interface Adapter".
Advanced Micro Devices' advanced data sheets (pp. i-vi, 1-106) for "Am79C900 Integrated Local Area Communications Controller (ILACC)".
Intel advance data sheets (pp. 1-63) for "82596CA High-Performance 32-Bit Local Area Network Coprocessor".
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