HID Global Crescendo C2300 CL
3B
85
80
01
43
32
33
30
30
46
2
Total reports
100%
Success rate
2022
First report
2026-05-06
Last report
ATR Analysis
ISO 7816-3 · local
Full analysis on smartcard-atr.apdu.fr ↗
Convention
direct
Protocol
T=0
T=1
Baud rate (TA1)
TA1 absent — default Fi=372, Di=1 (9600 bps at 4MHz)
Historical bytes
4332333030
Proprietary / unstructured
TCK checksum
✓ valid
46
| # | Byte | Name | Description |
|---|---|---|---|
| 0 | 3B | TS | Direct convention (TS = 3B) |
| 1 | 85 | T0 | Format byte: 5 historical bytes, Y1=0b1000 (TA1=absent, TB1=absent, TC1=absent, TD1=present) |
| 2 | 80 | TD1 | TD1: T=0 protocol indicator, Y2=0b1000 (TA2=absent, TB2=absent, TC2=absent, TD2=present) |
| 3 | 01 | TD2 | TD2: T=1 protocol indicator, Y3=0b0000 (TA3=absent, TB3=absent, TC3=absent, TD3=absent) |
| 4 | 43 | T1 | Historical byte 1 |
| 5 | 32 | T2 | Historical byte 2 |
| 6 | 33 | T3 | Historical byte 3 |
| 7 | 30 | T4 | Historical byte 4 |
| 8 | 30 | T5 | Historical byte 5 |
| 9 | 46 | TCK | Check byte: XOR(T0…TCK) = 00 → ✓ valid |