Automatic hardware interface detection

A device that processes a Near Field Communication type application, the device comprising:

• a host processor that is built to process device applications, that use the Near Field Communication type application, and that comprises a host wired data interface stage with an encoder built to encode data based on a first interface protocol and to communicate the encoded data via N information lines;
• an NFC controller, that is built to processes a Near Field Communication type contactless interface and that comprises an NFC controller wired data interface stage with a first decoder, built to communicate via the N information lines with the host wired data interface stage based on the first interface protocol, and with a second decoder, built to communicate via the N information lines with another host wired data interface stage of another host processor based on a second interface protocol;
• and
• a protocol selection stage of the NFC controller wired data interface stage, that is built to select the first decoder or the second decoder to decode the data received via the N information lines according to the selected first interface protocol or selected second interface protocol,
• wherein:
• the protocol selection stage is built to analyze signals on at least one of the N information lines based on a fixed information line connection scheme for each of the first interface protocol and second interface protocol during a boot procedure after power-on of the NFC controller to select either the first decoder or the second decoder to be used to decode the data received via the N information lines according to the selected first interface protocol or the second interface protocol.