Document Version 1.00
Last revised on
Page 27 of 87
2020-04-10
Reference Manual for uTrust 3720F and uTrust 3721F Readers
5.3.3.3.
ATR for ISO/IEC 15693 tokens
The credential exposes its ATS or application information which is mapped to an ATR. The table
describes how this mapping is done.
Byte#
Value
Designation
Description
0
0x3B
Initial header
1
0x8n
T0
n indicates the number of historical bytes in
following ATR
2
0x80
TD1
upper nibble 8 indicates no TA2, TB2, TC2
lower nibble 0 means T=0
3
0x01
TD2
upper nibble 0 indicates no TA3, TB3, TC3 lower
nibble 1 means T=1
4...3+n
0x80
A status indicator may be present in an optional
TLV data object
0x4F
Optional TLV
data object
Tag: Application identifier
Length
1 byte
RID (0xA000000306)
Registered identifier on 5 bytes
PIX (0x0B 0xXX 0xXX)
Proprietary identifier extension on 3 bytes
0x00 0x000x000x00
4 RFU bytes
4+n
TCK
XOR of all previous bytes