ISO 14443 Type A卡的交互过程

 sent REQA and received ATQA.
I sent SEL without UID and received UID.
I sent SEL with UID and received SAK=08.

R: 26                                    => Welcome (REQA) (or use WUPA = 0x52)
T: 44  03                                => Respond (ATQA)
R: 93  20                                => Select cascade 1 (SEL)
T: 88  04  34  74  cc                    => CT, UID(byte 1,2,3), BCC
R: 93  70  88  04  34  74  cc  0e  05    => Select available tag (SEL)
T: 24  d8  36                            => Select Acknowledge (SAK)
R: 95  20                                => Select cascade 2 (SEL)    
T: e1  e3  1c  80  9e                    => UID(byte 4,5,6,7), BCC
R: 95  70  e1  e3  1c  80  9e  b9  e1    => Finish select (SEL)
T: 20  fc  70                            => SAK without cascade bit set
R: e0  50  bc  a5                        => Request Answer to Select (RATS)
T: 06  75  77  81  02  80                => ATS (DESFire EV1)

R: 50  00  57  cd                        => Disable (HALT)

check: 9.1 MIFARE Classic command overview in http://www.nxp.com/documents/data_sheet/MF1S503x.pdf

http://www.libnfc.org/documentation/examples/nfc-anticol