公开(公告)号：US12079055B2

公开(公告)日：2024-09-03

申请号：US17949968

申请日：2022-09-21

Applicant: QUALCOMM Incorporated

Inventor： James Lionel Panian ,  John Eaton ,  Lakshmi Baskaran ,  Shrinivas Gopalan Uppili

IPC: G06F1/28 ,  G06F13/42 ,  H03K19/0185

CPC classification number: G06F1/28 ,  G06F13/4221 ,  H03K19/018507 ,  G06F2213/0026

Abstract: Aspects relate to techniques for controlling signal voltage levels across a wired data link for data communication between apparatuses. A first device can advertise multiple supported signal voltage levels to a peer device connected by the wired data link. The devices can implement the same signal voltage level(s) or different signal voltage levels. The peer devices can compare and select a compatible signal voltage level for data communication. The first device can provide a signal voltage indication signal that is configurable to a plurality of voltage levels corresponding to a plurality of signal voltages. At least one of the plurality of voltage levels can indicate that the first device can operate the data link at a plurality of signal voltages. In some examples, the wired data link can be a peripheral component interconnect express (PCIe) link.