I am using the TRF7970A EVM to Select a ISO14443A card. The procedure I follow is the below:
1. Set the protocol for ISO14443A in the TRF7970A
2. Do an anticollission sequence to get the UID of the card. In my case I get the 4 byte UID
3. Send this UID and do a SELECt command, with nvb 0x70. Here the card should respond with an SAK. Instead I get 3 bytes in the buffer which are 0x28, 0xB4, 0xFC
What are the above 3 bytes and which is the SAK byte?
After this I want to issue an RATS, so as to select the card and activate the application layer. I am stuck at the 3 bytes above which are issued.