ANALOG MULTIPLEXING SCHEME FOR DECISION FEEDBACK EQUALIZERS

    公开(公告)号:US20190356517A1

    公开(公告)日:2019-11-21

    申请号:US16526433

    申请日:2019-07-30

    Abstract: A device includes a voltage generator that generates a reference signal, a multi-level bias generator coupled to the voltage generator to receive the reference signal and generate a plurality of bias level signals based at least in part on the reference signal. The multi-level bias generator transmits the plurality of bias level signals to a plurality of multiplexers that each receive a select signal to select a subset of bias level signals of the plurality of bias level signals based. The device also includes an adjustment circuit of a decision feedback equalizer that receives a respective selected subset of bias level signals from one multiplexer of the plurality of multiplexers and utilizes the respective selected subset of bias level signals to compensate for inter-symbol interference of a bit due to a previously received bit of a bit stream.

    Management of strobe/clock phase tolerances during extended write preambles

    公开(公告)号:US10482946B2

    公开(公告)日:2019-11-19

    申请号:US16448841

    申请日:2019-06-21

    Inventor: Daniel B. Penney

    Abstract: Memory devices coupled to host devices may receive clocking signals and data strobe signals during write operations, which may present a skew. Memory specifications may include Write Preambles, preambles in the data signal provided at the beginning of write operations. Memory devices that decode particular features in the preamble, and that may relax the skew tolerances are provided. The memory devices may include configurable decoders that may be adjusted based on the features in the preamble or the preamble type. For example, memory devices may employ a rising edge, a falling edge, a low level, or a high level based on the specific type of preamble. Skew tolerances between the clock and the data strobe signals may be further improved by employing early write command launch points, using a training mechanism.

    Signal training for prevention of metastability due to clocking indeterminacy

    公开(公告)号:US10482936B2

    公开(公告)日:2019-11-19

    申请号:US16423852

    申请日:2019-05-28

    Inventor: Daniel B. Penney

    Abstract: Methods and systems that may employ adjustments to the latencies in the input circuitry to reduce the latency during initialization period and to prevent undesired effects from metastability are provided. Disclosed systems may employ adjustable delays during a signal training process to cause adjustments in the timing of the host that will reduce latencies during write cycles. Certain systems may further reduce latencies by employing input logic circuitry that produces a valid, consistent signal from the bidirectional connection, such as a gate, and preventing metastability in input circuitry altogether. Such circuitry allows bypassing of initialization periods to stabilize the input, and allows further reduction of the initialization.

    SIGNAL TRAINING FOR PREVENTION OF METASTABILITY DUE TO CLOCKING INDETERMINACY

    公开(公告)号:US20190279694A1

    公开(公告)日:2019-09-12

    申请号:US16423852

    申请日:2019-05-28

    Inventor: Daniel B. Penney

    Abstract: Methods and systems that may employ adjustments to the latencies in the input circuitry to reduce the latency during initialization period and to prevent undesired effects from metastability are provided. Disclosed systems may employ adjustable delays during a signal training process to cause adjustments in the timing of the host that will reduce latencies during write cycles. Certain systems may further reduce latencies by employing input logic circuitry that produces a valid, consistent signal from the bidirectional connection, such as a gate, and preventing metastability in input circuitry altogether. Such circuitry allows bypassing of initialization periods to stabilize the input, and allows further reduction of the initialization.

    Management of strobe/clock phase tolerances during extended write preambles

    公开(公告)号:US10366737B2

    公开(公告)日:2019-07-30

    申请号:US15850744

    申请日:2017-12-21

    Inventor: Daniel B. Penney

    Abstract: Memory devices coupled to host devices may receive clocking signals and data strobe signals during write operations, which may present a skew. Memory specifications may include Write Preambles, preambles in the data signal provided at the beginning of write operations. Memory devices that decode particular features in the preamble, and that may relax the skew tolerances are provided. The memory devices may include configurable decoders that may be adjusted based on the features in the preamble or the preamble type. For example, memory devices may employ a rising edge, a falling edge, a low level, or a high level based on the specific type of preamble. Skew tolerances between the clock and the data strobe signals may be further improved by employing early write command launch points, using a training mechanism.

    ANALOG MULTIPLEXING SCHEME FOR DECISION FEEDBACK EQUALIZERS

    公开(公告)号:US20190222445A1

    公开(公告)日:2019-07-18

    申请号:US16191169

    申请日:2018-11-14

    Abstract: A device includes a voltage generator that generates a reference signal, a multi-level bias generator coupled to the voltage generator to receive the reference signal and generate a plurality of bias level signals based at least in part on the reference signal. The multi-level bias generator transmits the plurality of bias level signals to a plurality of multiplexers that each receive a select signal to select a subset of bias level signals of the plurality of bias level signals based. The device also includes an adjustment circuit of a decision feedback equalizer that receives a respective selected subset of bias level signals from one multiplexer of the plurality of multiplexers and utilizes the respective selected subset of bias level signals to compensate for inter-symbol interference of a bit due to a previously received bit of a bit stream.

    SYSTEMS AND METHODS FOR THRESHOLD VOLTAGE MODIFICATION AND DETECTION

    公开(公告)号:US20190122742A1

    公开(公告)日:2019-04-25

    申请号:US16049411

    申请日:2018-07-30

    Abstract: A memory device includes a memory array of a set of memory cells. Each memory cell of the set of memory cells includes at least one transistor and at least one capacitor. The memory array includes at least one programmed memory cell. The programmed memory cell is selectively programmed by applying hot-carrier injection (HCI) to a transistor of the programmed memory cell. The programmed memory cell may provide an indication of pattern data that may be used to facilitate functionality such as data encryption, data decryption, implementation of a particular memory device operation mode, and/or machine-implemented instructions.

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