ACS AET62 NFC Reader with Fingerprint Sensor - Manual (Page 8)

4.0. PICC Interface Description
4.1. ATR Generation
If the reader detects a PICC, an ATR will be sent to the PCSC driver to identify the PICC.
4.1.1. ATR format for ISO 14443 Part 3 PICCs
Byte Value
(Hex)
Designation Description
0 3B Initial Header
1 8N T0 Higher nibble 8 means: no TA1, TB1, TC1
only TD1 is following.
Lower nibble N is the number of historical
bytes (HistByte 0 to HistByte N-1)
2 80 TD1 Higher nibble 8 means: no TA2, TB2, TC2
only TD2 is following.
Lower nibble 0 means T = 0
3 01 TD2 Higher nibble 0 means no TA3, TB3, TC3,
TD3 following.
Lower nibble 1 means T = 1
80 T1 Category indicator byte, 80 means A status
indicator may be present in an optional
COMPACT-TLV data object
4F Application identifier Presence Indicator
0C Length
RID Registered Application Provider Identifier
(RID) # A0 00 00 03 06
SS Byte for standard
C0 .. C1
Tk
Bytes for card name
4
To
3+N
00 00 00 00 RFU RFU # 00 00 00 00
4+N UU TCK Exclusive-oring of all the bytes T0 to Tk
Table 2: ATR format for ISO 14443 Part 3 PICCs
Example: ATR for MIfare 1K = {3B 8F 80 01 80 4F 0C A0 00 00 03 06 03 00 01 00 00 00 00 6A}
ATR
Initial
Header T0 TD1 TD2 T1 Tk Length RID Standard Card
Name
RFU TCK
3B 8F 80 01 80 4F 0C A0 00 00
03 06 03 00 01 00 00 00
00 6A
Where:
Length (YY) = 0C
RID = A0 00 00 03 06 (PC/SC Workgroup)
Standard (SS) = 03 (ISO14443A, Part 3)
Card Name (C0 .. C1) = [00 01] (Mifare 1K)
Where, Card Name (C0 .. C1)
00 01: Mifare 1K
00 02: Mifare 4K
00 03: Mifare Ultralight
00 26: Mifare Mini
….
F0 04: Topaz and Jewel
F0 11: FeliCa 212K
F0 12: FeliCa 424K
…
FF [SAK]: Undefined
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