Enter an ATR (Answer To Reset) and I will parse it for you.
Parsing ATR:
| TS = 0x3B | Direct Convention |
|---|---|
| T0 = 0xDE | Y(1): b1101, K: 14 (historical bytes) |
| TA(1) = 0x18 | Fi=372, Di=12, 31 cycles/ETU (129032 bits/s at 4.00 MHz, 161290 bits/s for fMax=5 MHz) |
| TC(1) = 0xFF | Extra guard time: 255 (special value) |
| TD(1) = 0x81 | Y(i+1) = b1000, Protocol T=1 |
| ---- | |
| TD(2) = 0xF1 | Y(i+1) = b1111, Protocol T=1 |
| ---- | |
| TA(3) = 0xFE | IFSC: 254 |
| TB(3) = 0x43 | Block Waiting Integer: 4 - Character Waiting Integer: 3 |
| TC(3) = 0x00 | Error detection code: LRC |
| TD(3) = 0x3F | Y(i+1) = b0011, Protocol T=15 |
| ---- | |
| TA(4) = 0x07 | Clock stop: not supported - Class accepted by the card: (3G) A 5V B 3V C 1.8V |
| TB(4) = 0x83 | RFU |
| ---- | |
| Historical bytes | 44 45 53 46 69 72 65 38 20 53 41 4D 2D 58 |
| Category indicator byte: 0x44 | (proprietary format) "ESFire8 SAM-X" |
| TCK = 0x17 | correct checksum |
Possibly identified card:
3B DE 18 FF 81 F1 FE 43 00 3F 07 83 44 45 53 46 69 72 65 38 20 53 41 4D 2D 58 17
NXP SAM
The parsing code is part of pyscard and is available at parseATR.py.
The list of known ATR is also available online at smartcard_list.txt.
My blog contains a serie of artickes about ATR bytes.