Method and device for managing information exchange between a main element, for example a NFC controller, and a set of at least two auxiliary elements

摘要

Device, comprising a main element (ME) and a set of at least two auxiliary elements (SEi), said main element including a master SWP interface (MINT), each auxiliary element including a slave SWP interface (SLINTi) connected to said master SWP interface of said NFC element through a controllably switchable SWP link (LK) and management means (PRM, CTLM, AMGi) configured to control said SWP link switching for selectively activating at once only one slave SWP interface on said SWP link.

主权项

1. A method of managing information to be exchanged between a main element and a plurality of auxiliary elements, the method comprising:
providing the main element with a master single wire protocol (SWP) interface; providing each auxiliary element with a slave SWP interface; coupling the slave SWP interfaces to the master SWP interface through a switchable SWP link, with the switchable SWP link having a separate input for each slave SWP interface, the coupling comprising coupling a multiplexer/demultiplexer switch between the master SWP interface and the slave SWP interfaces; and controlling the switchable SWP link for selectively activating only one slave SWP interface at a time for connection with the master SWP interface, the activating of a selected SWP interface comprising exchanging control data between the master SWP interface and the selected slave SWP interface, and the controlling comprising controlling the multiplexer/demultiplexer switch for switching the SWP link to the selected slave SWP interface.