Clock tree structure in a memory system

    公开(公告)号:US10339075B2

    公开(公告)日:2019-07-02

    申请号:US15693027

    申请日:2017-08-31

    Abstract: A computing system including multiple integrated circuit memory devices is described. One or more command and address buses are connected to the memory devices to transmit command and address signals to each memory device. Multiple clock lines are connected to the multiple memory devices in a tree structure to transmit multiple clock signals to these memory devices. The tree structure allows each distributed clock signal to be individually trained such that the multiple clock signals provide each memory device with a clock signal that is temporally aligned with the command and address signals as received by that memory device.

    APPARATUSES AND METHODS FOR PARTIAL BIT DE-EMPHASIS

    公开(公告)号:US20180269875A1

    公开(公告)日:2018-09-20

    申请号:US15941964

    申请日:2018-03-30

    Inventor: Roy E. Greeff

    Abstract: Apparatuses and methods for partial bit de-emphasis are provided. An example apparatus includes an output driver and control circuit. The output driver includes a pull-up circuit including one or more pull-up legs, and a pull-down circuit including one or more pull-down legs. The control circuit may be coupled to the output driver and configured to receive an input signal having a first logical value and a second logical value, and in response to determining the logical transition has occurred from the second logic value to the first logic value, cause the pull-up circuit and pull-down circuit respectively to enter a first state for a duration of a first portion of a bit period and to enter a second state for a duration of a second portion of the bit period preceding the first portion.

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