Interface circuitry for bidirectional power connector

    公开(公告)号:US10317436B2

    公开(公告)日:2019-06-11

    申请号:US15174371

    申请日:2016-06-06

    Applicant: APPLE INC.

    Abstract: Interface circuits that may utilize a limited number of pins to detect a presence of an accessory, determine whether the accessory can provide or receive power, communicate with the accessory regarding at least that transfer of power, and transfer power accordingly. One example may provide detection circuitry for a host that may detect the presence of a pull-down resistor on a data pin of an accessory. The pull-down may indicate that a power consuming accessory has been connected. This example may detect the presence of power on a power pin. The presence of the power on the power pin may indicate that a power providing accessory has been connected.

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