APPARATUS, MEMORY DEVICE AND METHOD FOR STORING PARAMETER CODES FOR ASYMMETRIC ON-DIE- TERMINATION

    公开(公告)号:US20220321125A1

    公开(公告)日:2022-10-06

    申请号:US17591093

    申请日:2022-02-02

    Abstract: An apparatus, a memory device, and a method for storing parameter codes with respect to asymmetric on-die-termination (ODT) are provided. The apparatus is connected to an external device via a signal line, and includes: an on-die termination (ODT) circuit set in a first ODT state; a plurality of signal pins, each of which is connected to the signal line; and an ODT control circuit configured to: identify whether a second ODT state of the external device corresponds to the first ODT state, and based on the apparatus being an asymmetric ODT in which the first ODT state and the second ODT state are different, provide an asymmetric ODT parameter code to the external device, and disable the ODT circuit when a signal is not transmitted through the signal line.

    SEMICONDUCTOR MEMORY DEVICE AND MEMORY SYSTEM INCLUDING THE SAME

    公开(公告)号:US20240201868A1

    公开(公告)日:2024-06-20

    申请号:US18588599

    申请日:2024-02-27

    CPC classification number: G06F3/0619 G06F3/0655 G06F3/0656 G06F3/0679

    Abstract: A semiconductor memory device includes a memory cell array and a cyclic redundancy check (CRC) engine. The memory cell array includes a plurality of volatile memory cells coupled to respective ones of a plurality of word-lines and respective ones of a plurality of bit-lines. The CRC engine, during a memory operation on the memory cell array, detects an error in a main data and a system parity data provided from a memory controller external to the semiconductor memory device through a link, generates an error flag indicating whether the detected error corresponds to either a first type of error associated with the link or a second type of error associated with the volatile memory cells based on the system parity data and transmit the error flag to the memory controller.

    TRANSMITTER AND RECEIVER FOR 3-LEVEL PULSE AMPLITUDE MODULATION SIGNALING AND SYSTEM INCLUDING THE SAME

    公开(公告)号:US20230344444A1

    公开(公告)日:2023-10-26

    申请号:US17975034

    申请日:2022-10-27

    CPC classification number: H03M5/145 H04L1/0009 H04L1/0014

    Abstract: A transmitter includes an encoder configured to divide a first number of binary input bits of an input data signal into a first bit group and a second bit group, generate a first intermediate bit group and a second intermediate bit group by manipulating the first bit group and the second bit group differently based on a value of the first bit group, and generate a first symbol group and a second symbol group by encoding the first intermediate bit group and the second intermediate bit group, each of the first symbol group and the second symbol group including a plurality of symbols, and each of the plurality of symbols having three different voltage levels. The transmitter includes a driver configured to generate an output data signal by concatenating the first symbol group and the second symbol group.

    SEMICONDUCTOR MEMORY DEVICE AND MEMORY SYSTEM INCLUDING THE SAME

    公开(公告)号:US20220382464A1

    公开(公告)日:2022-12-01

    申请号:US17743137

    申请日:2022-05-12

    Abstract: A semiconductor memory device includes a memory cell array and a cyclic redundancy check (CRC) engine. The memory cell array includes a plurality of volatile memory cells coupled to respective ones of a plurality of word-lines and respective ones of a plurality of bit-lines. The CRC engine, during a memory operation on the memory cell array, detects an error in a main data and a system parity data provided from a memory controller external to the semiconductor memory device through a link, generates an error flag indicating whether the detected error corresponds to either a first type of error associated with the link or a second type of error associated with the volatile memory cells based on the system parity data and transmit the error flag to the memory controller.

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