AS ISO/IEC 14443.4:2022 identically adopts ISO/IEC 14443 4:2018, which specifies a half-duplex block transmission protocol featuring the special needs of a contactless environment and defines the activation and deactivation sequence of the protocol.
Table of contents
Header
About this publication
Preface
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols, abbreviated terms and notation
4.1 Symbols and abbreviated terms
4.2 Notations
5 Protocol activation of PICC Type A
5.1 Activation sequences
5.2 Request for answer to select
5.3 Answer to select
5.3.1 Structure of the bytes
5.3.2 Length byte
5.3.3 Format byte
5.3.4 Interface byte TA(1)
5.3.5 Interface byte TB(1)
5.3.6 Interface byte TC(1)
5.3.7 Historical bytes
5.4 Protocol and parameter selection request
5.4.1 Start byte
5.4.2 Parameter 0
5.4.3 Parameter 1
5.5 Protocol and parameter selection response
5.6 Activation frame waiting time
5.7 Error detection and recovery
5.7.1 Handling of RATS and ATS
5.7.1.1 PCD rules
5.7.1.2 PICC rules
5.7.2 Handling of PPS request and PPS response
5.7.2.1 PCD rules
5.7.2.2 PICC rules
5.7.3 Handling of the CID during activation
6 Protocol activation of PICC Type B
7 Half-duplex block transmission protocol
7.1 Elements and mechanisms
7.2 Block format
7.2.1 Length field
7.2.2 Prologue field
7.2.2.1 Protocol control byte field
7.2.2.2 Card identifier field
7.2.2.3 Node address field
7.2.3 Information field
7.2.4 Epilogue field
7.3 Frame waiting time
7.4 Frame waiting time extension
7.5 Power level indication
7.6 Protocol operation
7.6.1 S(PARAMETERS) blocks
7.6.2 Multi-Activation
7.6.3 Chaining
7.6.4 Block numbering rules
7.6.4.1 PCD rules
7.6.4.2 PICC rules
7.6.5 Block handling rules
7.6.5.1 General rules
7.6.5.2 PCD rules
7.6.5.3 PICC rules
7.6.6 PICC presence check
7.6.6.1 Method 1
7.6.6.2 Method 2
7.6.7 Error detection and recovery
7.6.7.1 Errors detected by the PCD
7.6.7.2 Errors detected by the PICC
8 Protocol deactivation of PICC Type A and Type B
8.1 Deactivation frame waiting time
8.2 Error detection and recovery
9 Activation of bit rates and framing options in PROTOCOL state
10 Frame with error correction
10.1 General
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
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
10.4 Enhanced block with error correction
10.4.1 General
10.4.2 Modified Hamming sub-block format
10.4.3 Hamming control byte
10.4.4 Hamming control generation matrix A
10.4.5 Hamming control bits calculation
10.4.6 Hamming control check matrix H
10.4.7 Error correction
10.5 Activation of frame with error correction in PROTOCOL state
Annex A
Annex B
B.1 General
B.2 Notation
B.3 Error-free operation
B.3.1 Exchange of I-blocks
B.3.2 Request for waiting time extension
B.3.3 DESELECT
B.3.4 Chaining
B.3.5 PICC Presence check
B.3.6 Exchange of additional parameters
B.4 Error handling
B.4.1 Exchange of I-blocks
B.4.2 Request for waiting time extension
B.4.3 DESELECT
B.4.4 Chaining
Annex C
Annex D
Annex E
E.1 CRC_32 encoding
E.2 Code sample written in ANSI C language for CRC_32 calculation
Annex F
F.1 Example
F.2 Code sample written in ANSI C language for Hamming control byte calculation
Annex G
Bibliography
Amendment 1
Annex H
H.1 PICC response time not depending on field strength
H.2 PICC response time partly depending on field strength
H.3 PICC response time always depending on field strength
