ISO/IEC 14443-4:2018

INTERNATIONAL ISO/IEC
STANDARD 14443-4
Fourth edition
2018-07
Cards and security devices for
personal identification — Contactless
proximity objects —
Part 4:
Transmission protocol
Cartes et dispositifs de sécurité pour l'identification personnelle —
Objets sans contact de proximité —
Partie 4: Protocole de transmission
Reference number
©
ISO/IEC 2018
© ISO/IEC 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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Published in Switzerland
ii © ISO/IEC 2018 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols, abbreviated terms and notation . 2
4.1 Symbols and abbreviated terms. 2
4.2 Notations . 4
5 Protocol activation of PICC Type A . 5
5.1 Activation sequences . 5
5.2 Request for answer to select . 6
5.3 Answer to select . 7
5.3.1 Structure of the bytes. 8
5.3.2 Length byte . 8
5.3.3 Format byte . 8
5.3.4 Interface byte TA(1) . 9
5.3.5 Interface byte TB(1) . 9
5.3.6 Interface byte TC(1) .10
5.3.7 Historical bytes . . .11
5.4 Protocol and parameter selection request .11
5.4.1 Start byte .11
5.4.2 Parameter 0 .11
5.4.3 Parameter 1 .12
5.5 Protocol and parameter selection response .12
5.6 Activation frame waiting time .13
5.7 Error detection and recovery .13
5.7.1 Handling of RATS and ATS .13
5.7.2 Handling of PPS request and PPS response .13
5.7.3 Handling of the CID during activation .14
6 Protocol activation of PICC Type B .14
7 Half-duplex block transmission protocol .15
7.1 Elements and mechanisms .15
7.2 Block format .15
7.2.1 Length field .16
7.2.2 Prologue field .16
7.2.3 Information field .19
7.2.4 Epilogue field .19
7.3 Frame waiting time .19
7.4 Frame waiting time extension .20
7.5 Power level indication .21
7.6 Protocol operation .21
7.6.1 S(PARAMETERS) blocks .21
7.6.2 Multi-Activation .23
7.6.3 Chaining .23
7.6.4 Block numbering rules .24
7.6.5 Block handling rules .25
7.6.6 PICC presence check .26
7.6.7 Error detection and recovery .26
8 Protocol deactivation of PICC Type A and Type B.27
8.1 Deactivation frame waiting time .27
8.2 Error detection and recovery .27
© ISO/IEC 2018 – All rights reserved iii

9 Activation of bit rates and framing options in PROTOCOL state .27
10 Frame with error correction .30
10.1 General .30
10.2 Type A PCD frame format for bit rates up to fc/16 and higher than fc/2 and Type A
PICC frame format for all bit rates.30
10.3 Type A PCD frame format for bit rates of fc/8, fc/4 and fc/2 and Type B PCD and
PICC frame format for all bit rates.31
10.4 Enhanced block with error correction .31
10.4.1 General.31
10.4.2 Modified Hamming sub-block format .31
10.4.3 Hamming control byte .31
10.4.4 Hamming control generation matrix A .32
10.4.5 Hamming control bits calculation .32
10.4.6 Hamming control check matrix H .32
10.4.7 Error correction .33
10.5 Activation of frame with error correction in PROTOCOL state .33
Annex A (informative) Multi-Activation example .37
Annex B (informative) Protocol scenarios .38
Annex C (informative) Block and frame coding overview .47
Annex D (deliberately left blank) .49
Annex E (informative) CRC_32 encoding.50
Annex F (informative) Frame with error correction .52
Annex G (informative) Framing options .54
Bibliography .55
iv © ISO/IEC 2018 – All
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