Memory redundancy repair

A memory, comprising:

• an array of content addressable memory (CAM) cells comprising a plurality of groupings of CAM cells, wherein each CAM cell of the array of CAM cells is configured to store a respective data value;
• a plurality of signal nodes, wherein each signal node of the plurality of signal nodes is in communication with a respective CAM cell for each grouping of CAM cells of the plurality of groupings of CAM cells;
• a plurality of match signal generators, wherein each match signal generator of the plurality of match signal generators corresponds to a respective grouping of CAM cells of the plurality of groupings of CAM cells, and wherein each match signal generator of the plurality of match signal generators is configured to generate an indication whether each CAM cell of its respective grouping of CAM cells indicates a match between its respective data value and a signal value received from its respective signal node of the plurality of signal nodes;
• a plurality of groupings of storage elements, wherein each grouping of storage elements of the plurality of groupings of storage elements corresponds to a respective grouping of CAM cells of the plurality of groupings of CAM cells and to the respective match signal generator for that respective grouping of CAM cells;
• and
• a multiplexer having a first plurality of inputs in communication with each signal node of the plurality of signal nodes, having a second plurality of inputs in communication with outputs of each storage element of the plurality of grouping of storage elements, and having a plurality of outputs;
• wherein each storage element of the plurality of groupings of storage elements corresponds to a respective CAM cell of its respective grouping of CAM cells in a one-to-one relationship, wherein each storage element of the plurality of groupings of storage elements is configured to store a respective data value, and wherein each storage element of the plurality of groupings of storage elements is responsive to the indication of its match signal generator to generate a data signal on an output of that storage element indicative of the respective data value of that storage element when the indication of the respective match signal generator for that storage element indicates a match, and to present a high impedance to the output of that storage element when the indication of the respective match signal generator for that storage element indicates a mis-match;
• and
• wherein the multiplexer is configured to connect its plurality of outputs to the first plurality of inputs when no match signal generator of the plurality of match signal generators indicates a match, and to connect its plurality of output to the second plurality of inputs when any match signal generator of the plurality of match signal generators indicates a match.

A method of operating a memory, comprising:

• comparing a received address portion to a stored address portion;
• generating an indication whether a match was detected between the received address portion and the stored address portion;
• activating a plurality of storage elements responsive to the indication when a match between the received address portion and the stored address portion is detected;
• and
• accessing a redundant memory element in response to outputs of the activated plurality of storage elements.