Enter an ATR (Answer To Reset) and I will parse it for you.
Parsing ATR:
| TS = 0x3B | Direct Convention |
|---|---|
| T0 = 0xFB | Y(1): b1111, K: 11 (historical bytes) |
| TA(1) = 0x91 | Fi=512, Di=1, 512 cycles/ETU (7812 bits/s at 4.00 MHz, 9765 bits/s for fMax=5 MHz) |
| TB(1) = 0x00 | VPP is not electrically connected |
| TC(1) = 0xFF | Extra guard time: 255 (special value) |
| TD(1) = 0x91 | Y(i+1) = b1001, Protocol T=1 |
| ---- | |
| TA(2) = 0x81 | Protocol to be used in spec mode: T=1 - Unable to change - defined by interface bytes |
| TD(2) = 0x71 | Y(i+1) = b0111, Protocol T=1 |
| ---- | |
| TA(3) = 0xFE | IFSC: 254 |
| TB(3) = 0x40 | Block Waiting Integer: 4 - Character Waiting Integer: 0 |
| TC(3) = 0x00 | Error detection code: LRC |
| ---- | |
| Historical bytes | 41 20 00 11 77 91 80 73 C8 21 10 |
| Category indicator byte: 0x41 | (proprietary format) " ..w..s.!." |
| TCK = 0xD6 | correct checksum |
Possibly identified card: UNKNOWN
Click here to enter the card description
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.