METHOD FOR ESTABLISHING A DATA LINK BETWEEN A FIRST PROCESSOR AND A SECURE PROCESSOR, IN PARTICULAR IN AN NFC CHIPSET

摘要

The invention relates to a method for establishing a data link between a first processor (NFCC) configured to provide, on a contact communication port (P1), a first data carrier signal (TX1), and a second processor (SP1) ) configured to provide on a contact communication port (P2) a second data carrier signal (TX2). The method comprises the steps of providing a first coupler (CP1) and a second coupler (CP1), establishing a contactless coupling between the first and second couplers and, via the couplers, and by means of at least one signal RF (H1, Vac, E1, SA1, SA2, SA3, E2, SA4), transferring the first data carrier signal (TX1) to the second processor (SP1) and transferring the second data carrier signal (TX2) to the first processor ( NFCC). The second processor is a secure SIM card processor.