Intel Corporation

Cisco Systems Inc.

Anurag Nigam

H Victor Shadan

Paul M Elliott

Phu Son Le

Victor Shadan

Patrick R Bisson

Kate B Amon

The present invention provides a method and structure for allowing more than 16 nodes to be configured in a single SONET BLSR network by utilizing unused portions of the transport overhead of an STS-N frame to expand the node identification field from 4 bits to 8 bits, thereby allowing up to 256 nodes to be present on a single ring.

BLSR node extension

A circuit for transferring a logic value from a content addressable memory (CAM) having a plurality of match lines to a random access memory (RAM) having a plurality of word lines. A first logic gate has an input coupled to a first match line of the plurality of match lines, and a second logic gate has an input coupled to a second match line of the plurality of match lines. A first switch is coupled between an output of the first logic gate and a first word line, and a second switch is coupled between an output of the second logic gate and a second word line. The first switch is controlled by the output of the second logic gate such that the first switch is opened when the second match line has a second logic value and closed when the second match line has a first logic value. The second switch is controlled by the output of the first logic gate such that the second switch is opened when the first match line has the second logic value and closed when the first match line has the first logic value.

Mutually controlled match-line-to-word-line transfer circuit

A memory cell comprising a storage cell and a comparison circuit. The storage cell has a second node and a third node. The comparison circuit is coupled to the storage cell and comprises a first plurality of transistors coupled in series to a first input and a second plurality of transistors coupled in series to a second input and coupled to the first plurality of transistors by a first node and by a source voltage node. A match line coupled to the first node indicates a miss when values on the first and second inputs are different than values stored in the storage cell.

Dynamically controlled, cross-stacked CAM cell

Growing community of inventors

Mountain View, CA, United States of America

Anurag Nigam