Invention Grant
- Patent Title: Searchable array circuits with load-matched signals for reduced hit signal timing margins and related methods
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Application No.: US17249464Application Date: 2021-03-02
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Publication No.: US11581036B2Publication Date: 2023-02-14
- Inventor: Sai Prakash Reddy Bijivemula , Rajesh Kumar
- Applicant: Microsoft Technology Licensing, LLC
- Applicant Address: US WA Redmond
- Assignee: Microsoft Technology Licensing, LLC
- Current Assignee: Microsoft Technology Licensing, LLC
- Current Assignee Address: US WA Redmond
- Agency: Withrow & Terranova, PLLC
- Main IPC: G11C11/408
- IPC: G11C11/408 ; G11C11/413 ; G11C15/00 ; G11C15/04 ; H03K19/017 ; G11C11/412 ; G11C11/417

Abstract:
A CAM array of compare memory cell circuits includes a decode column corresponding to each set, and each set includes at least one row of the compare memory cell circuits. Each decode column receives a set clock signal addressing the corresponding set and generates a set match signal in each row of the corresponding set. A column compare circuit generates compare data indicating a bit of a compare tag. A row match circuit generates, for each row, in response to the set match signal, a row match signal indicating the compare tag matches the binary tag stored in the row. Circuits and loads in a decode column employed to generate the set clock signal correspond to circuits generating the row match signal in each column of the CAM array to reduce a timing margin of the match indication and decrease the access time for the CAM array.
Public/Granted literature
Information query
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