Title:
ENHANCED TL-TCAM LOOK-UP TABLE HARDWARE SEARCH ENGINE
Document Type and Number:
WIPO Patent Application WO/2023/123305
Kind Code:
A1
Abstract:
An enhanced TL-TCAM look-up table hardware search engine. Each word circuit comprises multiple enhanced TL-TCAM cell circuits. An enhanced TL-TCAM cell circuit comprises four memory cells and thirteen N-type transistors. A memory cell MC has a bistable circuit structure, a stored value being located at a T end of the memory cell MC, and an F end of the memory cell MC is a "not" value thereof. A number m of enhanced TL-TCAM cell circuits are connected together in parallel to form a sub-segment circuit, m being a positive integer. A word line WL and matching lines ML and ML_x of each enhanced TL-TCAM cell circuit in the sub-segment circuit are respectively short-circuited together. The matching line ML is connected to a drain electrode of an N-type transistor N15, the matching line ML_x is connected to a gate electrode of the N-type transistor N15, and a source electrode of the N-type transistor N15 is grounded. The matching line ML_x is connected to a drain electrode of the N-type transistor N14, a source electrode of the N-type transistor N14 is grounded, and a gate electrode of the N-type transistor N14 is connected to a signal line OneX_in-Sement_b. Multiple sub-segment circuits are connected in parallel to form a word circuit. The engine has advantages such as a low number of transistors, high search speed, and low power consumption.
Inventors:
ZHANG JIANWEI (CN)
Application Number:
PCT/CN2021/143501
Publication Date:
July 06, 2023
Filing Date:
December 31, 2021
Export Citation:
Assignee:
UNIV DALIAN TECH (CN)
International Classes:
G11C15/04
Domestic Patent References:
| WO2010050283A1 | 2010-05-06 |
Foreign References:
| US20210375362A1 | 2021-12-02 | |||
| US20050024976A1 | 2005-02-03 | |||
| US7170769B1 | 2007-01-30 | |||
| CN108055206A | 2018-05-18 | |||
| CN108199969A | 2018-06-22 |
Attorney, Agent or Firm:
DALIAN CHICCO PATENT OFFICE et al. (CN)
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