LOW-LATENCY OPTICAL CONNECTION FOR CXL FOR A SERVER CPU

    公开(公告)号:US20220114125A1

    公开(公告)日:2022-04-14

    申请号:US17067365

    申请日:2020-10-09

    Abstract: A processor having a system on a chip (SOC) architecture comprises one or more central processing units (CPUs) comprising multiple cores. An optical Compute Express Link (CXL) communication path incorporating a logical optical CXL protocol stack path transmits and receives an optical bit stream directly after the link layer, bypassing multiple levels of the CXL protocol stack. A CXL interface controller is connected to the one or more CPUs to enable communication between the CPUs and one or more CXL devices over the optical CXL communication path.

    METHOD FOR ORIENTING SOLDER BALLS ON A BGA DEVICE

    公开(公告)号:US20210185830A1

    公开(公告)日:2021-06-17

    申请号:US17187262

    申请日:2021-02-26

    Abstract: A BGA structure having larger solder balls in high stress regions of the array is disclosed. The larger solder balls have higher solder joint reliability (SJR) and as such may be designated critical to function (CTF), whereby the larger solder balls in high stress regions carry input/output signals between a circuit board and a package mounted thereon. The larger solder balls are accommodated by recessing each ball in the package substrate, the circuit board, or both the package substrate and the circuit board. Additionally, a ball attach method for mounting a plurality of solder balls having different average diameters is disclosed.

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