Apparatuses and methods for arbitrating a shared terminal for calibration of an impedance termination

    公开(公告)号:US10394473B2

    公开(公告)日:2019-08-27

    申请号:US15683540

    申请日:2017-08-22

    Inventor: Dean Gans

    Abstract: An arbitration system and method is disclosed. The apparatus includes a first and a second memory devices, and a resistor coupled in common to the first and second memory devices, the first memory device includes a first calibration circuit configured to perform a first calibration operation responsive, at least in part, to an external calibration command, the first calibration operation being performed based on the resistor, and the second memory device includes a second calibration circuit configured to perform a second calibration operation responsive, at least in part, to the external calibration command, the second calibration operation being performed based on the resistor after the first calibration operation has finished.

    Frequency synthesis for memory input-output operations

    公开(公告)号:US10115449B2

    公开(公告)日:2018-10-30

    申请号:US15415655

    申请日:2017-01-25

    Abstract: A memory channel including an internal clock circuit is disclosed. The clock circuit may synthesize an internal clock signal for use by one or more components of the memory channel. The internal clock signal may have a different frequency than an external clock frequency. The memory channel may include multiple clock circuits that generate multiple internal clock signals. Each portion of the memory channel associated with a different clock circuit may be phase and/or frequency independent of the other portions of the memory channel. The clock circuit may synthesize an internal clock signal based on an external clock signal. The clock circuit may use encoded timing data from an encoded I/O scheme to align the phase of the internal clock signal to a data signal.

    APPARATUSES AND METHODS INCLUDING MEMORY COMMANDS FOR SEMICONDUCTOR MEMORIES

    公开(公告)号:US20220334986A1

    公开(公告)日:2022-10-20

    申请号:US17751298

    申请日:2022-05-23

    Abstract: Apparatuses and methods including memory commands for semiconductor memories are described. A controller provides a memory system with memory commands to access memory. The commands are decoded to provide internal signals and commands for performing operations, such as operations to access the memory array. The memory commands provided for accessing memory may include timing command and access commands. Examples of access commands include a read command and a write command. Timing commands may be used to control the timing of various operations, for example, for a corresponding access command. The timing commands may include opcodes that set various modes of operation during an associated access operation for an access command.

    Apparatuses and methods including memory commands for semiconductor memories

    公开(公告)号:US11347666B2

    公开(公告)日:2022-05-31

    申请号:US17032152

    申请日:2020-09-25

    Abstract: Apparatuses and methods including memory commands for semiconductor memories are described. A controller provides a memory system with memory commands to access memory. The commands are decoded to provide internal signals and commands for performing operations, such as operations to access the memory array. The memory commands provided for accessing memory may include timing command and access commands. Examples of access commands include a read command and a write command. Timing commands may be used to control the timing of various operations, for example, for a corresponding access command. The timing commands may include opcodes that set various modes of operation during an associated access operation for an access command.

    Apparatuses and methods for identifying memory devices of a semiconductor device sharing an external resistance

    公开(公告)号:US11121714B2

    公开(公告)日:2021-09-14

    申请号:US16799668

    申请日:2020-02-24

    Inventor: Dean Gans

    Abstract: Apparatuses and methods for identifying memory devices of a semiconductor device sharing an external resistance are disclosed. A memory device of a semiconductor device may be set in an identification mode and provide an identification request to other memory devices that are coupled to a common communication channel. The memory devices that are coupled to the common communication channel may share an external resistance, for example, for calibration of respective programmable termination components of the memory devices. The memory devices that receive the identification request set a respective identification flag which can be read to determine which memory devices share an external resistance with the memory device having the set identification mode.

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