Patent ID: 11889397
Assignee: STMICROELECTRONICS S.R.L.
Field: Computer technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 14:
15. A method for operating a near field communication (NFC) controller, the method comprising:
exchanging, using a single wire protocol (SWP) port, information with a first Universal Integrated Circuit Card (UICC) or a second UICC external to the NFC controller via an SWP communications link;
modulating, by a control circuit of the NFC controller, communication of the NFC controller with one of the first UICC or the second UICC via the SWP communications link;
providing, by a control port coupled to the control circuit, a control signal indicative of whether the NFC controller is to communicate with the first UICC or the second UICC via the SWP communications link;
electrically coupling, using a switch arranged along an electrical path between the SWP port and each of the first UICC and the second UICC, the SWP port to one of the first UICC or the second UICC based on the control signal; and
concurrently electrically decoupling, using the switch, the SWP port from the other of the first UICC or the second UICC.