Why the prefix code of NFCID2 in SENSF_RES set to '0x02, 0xFE'

[diverger]

In 'X-CUBE-NFC6', I found the prefix code of NFCID2 in SENSF_RES is '0x02, 0xFE'. But the IS​O 18092 says:

The 6-byte number shall be randomly generated while the prefix code is ‘01’ ‘FE’. Other settings for the prefix code are RFU.

So, what's the meaning of '0x02, 0xFE' here?

[Ulysses HERNIOSUS · Accepted solution]

Hi,

please refer to NFC Forum Digital protocol:

Table 46: NFCID2 Format

Byte 1 Byte 2            Byte 3 – Byte 8                 Description
  01h    FEh             Dynamically Generated           NFC-DEP Protocol supported
  02h    FEh             Device Identification           Type 3 Tag Platform supported
All other values         Proprietary Identification      Type 3 Tag Platform supported

ISO18092 describes P2P based on NFC-DEP. So obviously they use 01 FE.

The X-CUBE-NFC6 example emulates an NFC Forum T3T (card specimen: FeliCa Lite-S).

Regards, Ulysses