ISO/IEC FDIS 18092

Telecommunications and information exchange between systems — Near Field Communication Interface and Protocol 1 (NFCIP-1)

Télécommunications et échange d'information entre systèmes — Communication de champ proche — Interface et protocole (NFCIP-1)

General Information

• Status: Not Published
• ICS: 35.100.10 - Physical layer
• Technical Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Drafting Committee: ISO/IEC JTC 1/SC 6 - Telecommunications and information exchange between systems
• Current Stage: 5020 - FDIS ballot initiated: 2 months. Proof sent to secretariat
• Start Date: 01-Sep-2023
• Completion Date: 01-Sep-2023

Relations

• Revises: ISO/IEC 18092:2013 - Information technology — Telecommunications and information exchange between systems — Near Field Communication — Interface and Protocol (NFCIP-1)
• Effective Date: 06-Jun-2022

Standards Content (Sample)

2023-04-25
ISO/IEC FDIS 18092:2023(E)
ISO/IEC JTC 1/SC 6 N
ISO/IEC FDIS 18092
ISO/IEC JTC 1/SC 6
Secretariat:  KATSKATS
Telecommunications and information exchange between systems — Near
Field Communication Interface and Protocol 1 (NFCIP-1)
Télécommunications et échange d'information entre systèmes — Communication de champ
proche Interface et protocole (NFCIP-1)
Document type:
Document subtype:
Document stage:
Document language:

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Copyright notice
This ISO document is a working draftDate: 2023-08-18
Telecommunications and information exchange between
systems — Near Field Communication Interface and Protocol 1
(NFCIP-1)
Télécommunications et échange d'information entre systèmes — Communication de champ proche —
Interface et protocole (NFCIP-1)
FDIS stage
Document type:
Document subtype:
Document stage:
Document language:

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ISO/IEC FDIS 18092:2023(E)
© ISO/IEC 2023
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ISO/IEC FDIS 18092:2023(E)


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ISO/IEC FDIS 18092:2023(E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are
members of ISO or IEC participate in the development of International Standards through technical
committees established by the respective organization to deal with particular fields of technical activity.
ISO and IEC technical committees collaborate in fields of mutual interest. Other international
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work.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of document should be noted. This document was drafted in accordance with the editorial
rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directiveswww.iso.org/directives or
www.iec.ch/members_experts/refdocs).
Field Code Changed
Attention is drawnISO and IEC draw attention to the possibility that some of the elementsimplementation
of this document may beinvolve the subjectuse of (a) patent(s). ISO and IEC take no position concerning
the evidence, validity or applicability of any claimed patent rights. in respect thereof. As of the date of
publication of this document, ISO and IEC had not received notice of (a) patent(s) which may be required
to implement this document. However, implementers are cautioned that this may not represent the latest
information, which may be obtained from the patent database available at www.iso.org/patents and
https://patents.iec.ch. ISO and IEC shall not be held responsible for identifying any or all such patent
rights. Details of any patent rights identified during the development of the document will be in the
Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents) or the IEC
list of patent declarations received (see https://patents.iec.ch).
Any trade name used in this document is information given for the convenience of users and does not
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For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the World
Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see
www.iso.org/iso/foreword.htmlwww.iso.org/iso/foreword.html. In the IEC, see
www.iec.ch/understanding-standardswww.iec.ch/understanding-standards.
This document was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 6, Telecommunications and information exchange between systems.
This third edition cancels and replaces the second edition (ISO/IEC 18092:2013), which has been
technically revised. It also incorporates ISO/IEC 18092:2013/Cor 1:2015.
The main changes are as follows:
— — Adoptionadoption of near field communication (NFC) security standard for the Target;
[2]
— — Harmonizationharmonization with the NFC Forum Digital Protocol Technical Specification [2]
[3]
and Activity Technical Specification [3] .
A list of all parts in the ISO/IEC 18092 series can be found on the ISO and IEC websites.
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ISO/IEC FDIS 18092:2023(E)
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html and www.iec.ch/national-
committeeswww.iso.org/members.html and www.iec.ch/national-committees.
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ISO/IEC FDIS 18092:2023(E)
Introduction
This document specifies the interface and protocol for simple wireless communication between close
coupled devices. These Near Field Communication (NFC) devices communicate with bit rates of 106, 212
and 424 kbit/s (fc/128, fc/64 and fc/32).
This allows, but does not specify, applications in network products and consumer equipment.
The first edition of ISO/IEC 18092 was prepared by Ecma International (as ECMA-340) and was adopted,
under a special “fast-track procedure”, by Joint Technical Committee ISO/IEC JTC 1/ , SC 6 in parallel with
its approval by national bodies of ISO and IEC. The second edition of ISO/IEC 18092 was maintained by
ISO/IEC JTC 1/SC 6 and Ecma International. This third edition of ISO/IEC 18092 is maintained by
ISO/IEC JTC 1/SC 6 with the goal to be harmonized with the NFC Forum Digital Protocol Technical
[2] [3]
Specification [2] and Activity Technical Specification [3] maintaining backward compatibility, to
enable the NFC Securitysecurity feature and to incorporate clarifications on timings of radio frequency
(RF) field switched off.
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DRAFT INTERNATIONAL STANDARD ISO/IEC FDIS 18092:2023(E)

Telecommunications and information exchange between
systems — Near Field Communication Interface and Protocol 1
(NFCIP-1)
Telecommunications and information exchange between
systems — Near Field Communication Interface and Protocol 1
(NFCIP-1)
1 Scope
This document defines:
— communication modes for Near Field Communication Interface and Protocol 1 (NFCIP-1) using
inductive coupled devices operating at the centre frequency of 13,56 MHz for interconnection of
computer peripherals. It also defines ;
— both the Activeactive and the Passivepassive communication modes of NFCIP-1 to realize a
communication network using Near Field Communication devices for networked products and also
for consumer equipment. This document specifies, in particular, modulation schemes, codings, bit
rates, and frame format of the radio frequency (RF) interface, as well as initialisation schemes and
conditions required for data collision control during initialisation. Furthermore, this document
defines a transport protocol including protocol activation and data exchange methods.(NFC) devices
for networked products and for consumer equipment;
— a transport protocol including protocol activation and data exchange methods.
This document specifies:
— modulation schemes;
— codings;
— bit rates;
— frame format of the radio frequency (RF) interface;
— initialisation schemes and conditions required for data collision control during initialisation.
Information interchange between systems is based on agreement between the interchange parties upon
the interchange codes and the data structure.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
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ISO/IEC FDIS 18092:2023(E)
ITU-T V.41:1988, Code-independent error-control system
ISO/IEC 13157--1:2014, Information technology — Telecommunications and information exchange
between systems — NFC Security — Part 1: NFC-SEC NFCIP-1 security services and protocol
ISO/IEC 14443--2:2020, Cards and security devices for personal identification — Contactless proximity
objects — Part 2: Radio frequency power and signal interface
ISO/IEC 14443--3:2018, Cards and security devices for personal identification — Contactless proximity
objects — Part 3: Initialization and anticollision
ITU-T V.41:1988, Code-independent error-control system
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/IEC 14443-2 and
ISO/IEC 14443-3, and the following terms and definitions apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— — ISO Online browsing platform: available at https://www.iso.org/obphttps://www.iso.org/obp
— — IEC Electropedia: available at https://www.electropedia.org/https://www.electropedia.org/
3.1
active communication mode
mode in which both the Initiator (3.5)(3.5) and the Target (3.17)(3.16) use their own radio frequency
(RF) field to enable the communication
3.2
collision
transmission by two or more Targets (3.17)(3.16) or Initiators (3.5)(3.5) during the same time period
(3.18),(3.17), such that the Initiator or the Target is unable to distinguish from which Target the data
originated
3.3
frame
sequence of data bits and optional error detection bits, with frame delimiters at start and end
3.4
H
Threshold
threshold value to detect an external radio frequency (RF) field
3.5
Initiator
entity that generates the radio frequency (RF) field and starsstarts the Near Field Communication
Interface and Protocol (NFCIP-1) communication
3.6
load modulation
process of amplitude modulating a radio frequency (RF) field by varying the properties of a resonant
circuit placed within the radio frequency (RF)RF field
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ISO/IEC FDIS 18092:2023(E)
3.7
lsb first
least significant bit first
least significant bit first, indicating a serial data transmission system that sends lsb before all other bits
3.8
manchesterManchester bit encoding
method of bit coding whereby a logic level during a bit duration is represented by a sequence of two
defined physical states of a communication medium
3.9
modulation index
signal amplitude ratio of the modulation to the level of the unmodulated carrier, calculated by the formula
:
[1 -− b] / [1 + b], ]
where b is the ratio between the modulated amplitude and the initial signal amplitude
3.10
msb first
most significant bit first
serial data transmission system that sends the msb before all other bits
3.11
NFCIP-1 device
entity supporting the active communication mode (3.1)(3.1) and the passive communication mode
(3.14)(3.13)
3.12
NFC identifier
NFCIDn (n = 1, 2 or 3)
number used by the Single Device Detection (3.16)(3.15) sequence for both the Active communication
mode (3.1)(3.1) and the Passive communication mode (3.14)(3.13)
3.13
NFC-SEC
NFCIP-1 Security Services and Protocol
Note 1 to entry: NFC-SEC is specified in ISO/IEC 13157-1.
3.14
passive communication mode
mode when the Initiator (3.5)(3.5) is generating the radio frequency (RF) field and the Target
(3.17)(3.16) responds to an Initiator command in a load modulation scheme
3.1514
RF Collision Avoidance
RFCA
method to detect the presence of a radio frequency (RF) field based on the carrier frequency
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ISO/IEC FDIS 18092:2023(E)
3.1615
Single Device Detection
SDD
algorithm used by the Initiator (3.5)(3.5) to detect one out of several Targets (3.17)(3.16) in its radio
frequency (RF) field
[SOURCE: ISO/IEC 14443-3:2018, 3.1 anticollision loop]
3.1716
Target
entity that responds to Initiator (3.5) command either using load modulation scheme (radio frequency
(RF) field generated by Initiator) or using modulation of self-generated radio frequency (RF)RF field
3.1817
time period
number of slots used for RF Collision Avoidance (3.15)(3.14)
3.1918
time slot
method of preparing a time window when a Target (3.17)(3.16) answers, and assigning and identifying
two or more logic channels
4 Symbols and abbreviated terms
The abbreviated terms in ISO/IEC 14443-2 and ISO/IEC 14443-3, and the following apply.
ATR Attribute
ATR_REQ Attribute Request
ATR_RES Attribute Response
BRi Receivingreceiving bit duration supported by Initiator
BRt Receivingreceiving bit duration supported by Target
Bsi Sendingsending bit duration supported by Initiator
BSt Sendingsending bit duration supported by Target
CMD Commandcommand
CRC Cyclic Redundancy Checkcyclic redundancy check
D Divisordivisor
DEP Data Exchange Protocol
DEP_REQ Data Exchange Protocol Request
DEP_RES Data Exchange Protocol Response
DIDi Initiator Device ID
DIDt Target Device ID
DRi Data rate Received by Initiator
DRt Data rate Received by InitiatorTarget
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ISO/IEC FDIS 18092:2023(E)
DSi Data rate Send by Initiator
DSL Deselect
DSL_REQ Deselect Request
DSL_RES Deselect Response
DSt Data rate Send by Target
etu elementary time unit
f Frequencyfrequency of operating field (carrier frequency)
c
G(x) Generatorgenerator polynomial for CRC generation
Gi Optionaloptional information field for Initiator
Gt Optionaloptional information field for Target
HLTA HaLT command, Type A
Hmax Maximummaximum field strength of the Initiator antenna field
H Minimumminimum field strength of the Initiator antenna field
min
H Thresholdthreshold value to detect an external radio frequency (RF) field
Threshold
ID Identificationidentification number
LEN Maximummaximum frame size
MAX
LRi length reduction of Initiator
LRt length reduction of Target
lsb least significant bit
lsb first least significant bit first
LSB Least Significant Byte
MI Multiple Information link for Data Exchange Protocol
msb most significant bit
MSB Most Significant Byte
NAD Node Address
NFCID1 UID for SDD in Passive communication mode at f /128
c
NFCID2 ID for SDD in Passive communication mode at f /64 and fc/32
c
NFCID3 Randomrandom ID for transport protocol activation
NFC-SEC NFCIP-1 Security Services and Protocol (specified in ISO/IEC 13157-1)
PA Preamblepreamble
PCD Proximity Coupling Device
pdu protocol data unit
PFB Controlcontrol information for transaction
PICC Proximity Cardproximity card or object
PNI Packet Number Information
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ISO/IEC FDIS 18092:2023(E)
PPi Protocol Parameters used by Initiator
PPt Protocol Parameters used by Target
PSL Parameter Selection
PSL_REQ Parameter Selection Request
PSL_RES Parameter Selection Response
RF Radio Frequency
RFCA RF Collision Avoidance
RFU Reserved for Future Use
RLS Release
RLS_REQ Release Request
RLS_RES Release Response
tRW Response Waiting Time
SAK Select AcKnowledge
SB Startstart byte for data exchange protocol at f /128
c
SDD Single Device Detection (anticollision)
SYNC Synchronisationsynchronisation pattern
TO Timeout valueTime Out
UID Unique Identifier
WT Waiting Time
WUP Wakeup
WUPA Wake UP command, Type A
WUP_REQ Wakeup Request
WUP_RES Wakeup Response
5 Conventions and notations
5.1 Representation of numbers
The following conventions and notations apply in this document unless otherwise stated:
— — Letters and digits in single quotation markmarks represent numbers in hexadecimal notation.
— — The setting of bits is denoted by ZERO or ONE.
— — Numbers in binary notation and bit patterns are represented by strings of digits 0 and 1 shown
with the most significant bit to the left. Within such strings, X may be used to indicate that the setting
of a bit is not specified within the string. For example, e.g. (XXXX)b.
5.2 Names
The names of basic elements, e.g. specific fields, are written with a capital initial letter.
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ISO/IEC FDIS 18092:2023(E)
6 Conformance
A system implementing the active and the passive communication mode shall be in conformance with
this document if it meets all the mandatory requirements specified herein.
7 General
NFCIP-1 Targets and Initiators shall implement both the active and the passive communication modes.
In the active communication mode, both the Initiator and the Target use their own RF field to
communicate. The Initiator starts the NFCIP-1 transaction, which consists of initialisation, protocol
activation, data exchange and optional device deactivation. The Target responds to an Initiator command
in the active communication mode by modulating its own RF field.
In the passive communication mode, the Initiator generates the RF field and starts the transaction. The
Target responds to an Initiator command in the Passivepassive communication mode by modulating the
Initiators’ RF field, which is referred to as load modulation.
This document specifies requirements for modulation, bit rates and bit coding. In addition, it specifies
requirements for the start of communication, the end of communication, the bit and byte representation,
the framing and error detection, the single device detection (SDD), the protocol activation and parameter
selection and the data exchange and deactivation of Near Field Communication Interface and Protocol
(NFCIP-1)NFCIP-1 devices.
Initiators and Targets exchange commands, responses and data in alternating or half duplex
communication.
NFCIP-1 devices are capable to start transactions at bit rates of f /128, f /64 and f /32. Initiators select
c c c
one of those bit rates to start a transaction and they may change the bit rate using the parameter selection
during a transaction.
The mode (active or passive) shall not be changed during a transaction.
8 RF field
8.1 Values
f is 13,56 MHz.
c
H is 1,5 A/m (rms).
min
H is 7,5 A/m (rms).
max
H is 0,187 5 A/m (rms).
Threshold
8.2 Passive communication mode
The Initiator shall generate field strength of at least H and not exceeding H at manufacturer specified
min min
positions (i.e. operating volume) under un-modulated conditions.
The Target shall operate continuously between Hmin and Hmax.
8.3 Active communication mode
An Initiator and a Target shall alternately generate an RF field of at least Hmin and not exceeding Hmax at
manufacturer specified positions (i.e. operating volume) under un-modulated conditions.
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ISO/IEC FDIS 18092:2023(E)
8.4 External RF field detection
NFCIP-1 devices shall detect external RF fields at f with field strength higher than H .
c Threshold
9 RF Signal Interfacesignal interface
9.1 General
This clause specifies bit duration and RF signal interface requirements for active and passive
communication modes.
NOTE activeActive and passive communication modes have also been adopted by NFC Forum, as shown in
[2]Reference [2] and [3].[3].
9.2 Bit duration
One etu equals 128/(D × f ), where the values of the divisor D depend on the bit rate and communication
c
mode, see Table 1.Table 1.
Table 1 — Divisor D
Communication Modemode bit rate Divisor D
Active or Passive f /128 (~106 kbit/s) 1
c
Active or Passive fc/64 (~212 kbit/s) 2
Active or Passive f /32 (~424 kbit/s) 4
c
Active fc/16 (~848 kbit/s) 8
Active fc/8 (~1 695 kbit/s) 16
Active f /4 (~3 390 kbit/s) 32
c
Active fc/2 (~6 780 kbit/s) 64
NOTE 1 The Initiator selects the communication mode (either Active or Passive) and bit rate (fc/128, fc/64 or
f /32 specified by the following clauses).
c
NOTE 2 This document does not specify the modulation and the bit coding beyond the bit rate of fc/32.
9.3 Active communication mode
9.3.1 General
Targets and Initiators shall conform with the following specifications for both communication directions,
i.e. Initiator to Target and Target to Initiator.
9.3.2 Requirements for f /128
c
9.3.2.1 Bit rate
The bit rate for the transmission during initialisation and SDD shall be f /128.
c
9.3.2.2 Modulation
SeeThe modulation shall be in accordance with ISO/IEC 14443-2:2020, 8.1.2 for a bit rate of fc/128.
During transmission, both the Initiator and the Target shall conform to PCD values. During reception,
both the Initiator and the Target shall conform to PICC values.
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ISO/IEC FDIS 18092:2023(E)
9.3.2.3 Bit representation and coding
SeeThe bit representation and coding shall be in accordance with ISO/IEC 14443-2:2020, 8.1.3 for a bit
rate of f /128.
c
9.3.2.4 Byte transmission
Initiators and targets shall transmit bytes with the lsb first.
9.3.3 Requirements for f /64 and f /32
c c
9.3.3.1 Bit rates
The bit rates for the transmission during initialisation and SDD shall respectively be fc/64 or fc/32.
9.3.3.2 Modulation
SeeThe modulation shall be in accordance with ISO/IEC 14443-2:2020, 9.1.2 for the bit rate of f /64 and
c
f /32. During transmission, both the Initiator and the Target shall apply the PCD values. During reception,
c
both the Initiator and the Target shall apply the PICC values.
The Target should accept a modulation index range from 8 % to 30 % to operate with Initiators using a
modulation index higher than 14 % for backward compatibility.
9.3.3.3 Bit representation and coding
Manchester bit encoding shall be employed as illustrated in Figure 1 and Figure 2.Figure 1 and Figure 2.
Bit coding format is Manchester with logic levels defined as:
— — Logic “ZERO”: The first half of the bit duration is carrier low field amplitude, and the second half
of the bit duration shall be carrier high field amplitude (no modulation applied).
— — Logic “ONE”: The first half of the bit duration is carrier high field amplitude (no modulation
applied), and the second half of the bit duration shall be carrier low field amplitude.
Reverse polarity in amplitude shall be permitted. Polarity shall be detected from the SYNC.


Figure 1 — Manchester bit encoding (obverse amplitude)
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ISO/IEC FDIS 18092:2023(E)


Figure 2 — Manchester bit encoding (reverse amplitude)
9.3.3.4 Byte transmission
Initiators and Targets shall transmit bytes with the msb first.
9.4 Passive communication mode
9.4.1 Requirements for fc/128
9.4.1.1 Initiator to Target requirements
See 9.3.2.
See 9.3.2.
9.4.1.2 Target to Initiator requirements
9.4.1.2.1 Bit rate
See 9.3.2.1.
See 9.3.2.1.
9.4.1.2.2 Modulation
SeeThe modulation shall be in accordance with ISO/IEC 14443-2:2020, 8.2.2.
9.4.1.2.3 Subcarrier Frequency
SeeThe subcarrier frequency shall be in accordance with ISO/IEC 14443-2:2020, 8.2.3 for a bit rate of
f /128.
c
9.4.1.2.4 Subcarrier modulation
SeeThe subcarrier modulation shall be in accordance with ISO/IEC 14443-2:2020, 8.2.4 for a bit rate of
f /128.
c
9.4.1.2.5 Bit representation and coding
SeeThe bit representation and coding shall be in accordance with ISO/IEC 14443-2:2020, 8.2.6 for a bit
rate of f /128.
c
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ISO/IEC FDIS 18092:2023(E)
9.4.1.2.6 Byte transmission
Initiators and Targets shall transmit bytes with the lsb first.
9.4.2 Requirements for fc/64 and fc/32
9.4.2.1 Initiator to Target requirements
9.4.2.1.1 Bit rate
See 9.3.3.1.
See 9.3.3.1.
9.4.2.1.2 Modulation
SeeThe modulation shall be in accordance with ISO/IEC 14443-2:2020, 9.1.2 for the bit rate of f /64 and
c
f /32. During transmission, the Initiator shall apply the PCD values.
c
9.4.2.1.3 Bit representation and coding
See 9.3.3.3.
See 9.3.3.3.
9.4.2.1.4 Byte transmission
See 9.3.3.4.
See 9.3.3.4.
9.4.2.2 Target to Initiator requirements
9.4.2.2.1 Bit rate
See 9.3.3.1.
See 9.3.3.1.
9.4.2.2.2 Modulation
The Target shall be capable of communication to the Initiator via an inductive coupling area by using load
modulation applied at f of the Initiator’s RF field with the PICC load modulation amplitude value specified
c
in ISO/IEC 14443-2:2020, 8.2.2. The Initiator shall be able to receive a signal with load modulation
amplitude as specified for the PCD reception in ISO/IEC 14443-2:2020, 8.2.5.
9.4.2.2.3 Bit representation and coding
See 9.3.3.3.
See 9.3.3.3.
9.4.2.2.4 Byte transmission
See 9.3.3.4.
See 9.3.3.4.
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ISO/IEC FDIS 18092:2023(E)
10 General Protocol flow
The General Protocol flow between NFCIP-1 devices shall be conducted through the following
consecutive operations:
— — Any NFCIP-1 device shall be in Target mode initially and not generate an RF field and shall wait
for a command from an Initiator.
— — The NFCIP-1 device may switch to Initiator mode and select either active or passive
communication mode and bit rate.
— — Initiators shall test for external RF field presence and shall not activate their RF field if an external
RF field is detected. See 8.4.See 8.4.
— — If an external RF field is not detected, the Initiator shall activate its own RF field for the activation
of Target.
— — Exchange commands and responses in the same communication mode and the bit rate.
Figure 3Figure 3 shows the general initialisation and SDD flow for the active and the passive
communication mode at different bit rates.
The General Protocol flow describes the flow to initialise and select the Targets either in the Passive
communication mode or in the active communication mode using one of the bit rates. RFCA is described
in 11.2.11.2. The passive communication mode is described in 11.3.11.3. The initialisation and SDD for
the bit rate of f /128 is described in 11.3.1,11.3.1, initialisation and SDD for bit rates of f /64 and f /32 is
c c c
described in 11.3.2.11.3.2. The active communication mode is described in 11.3.11.3.
The Activation of the Protocol is described in 12.5.12.5. The Parameter Selection is described in
12.5.3.12.6.3. The Data Exchange Protocol is described in 12.6.12.6. The Deactivation is described in
12.7.12.7.
11 Initialisation
11.1 General
This clause describes the initialisation and collision detection protocol for Targets in the active and the
passive communication mode. The Initiator shall detect a collision that occurs, when at least two Targets
simultaneously transmit bit patterns with one or more bit positions where they transmit complementary
values.
Figure 3Figure 3 shows the general initialisation and SDD flow for the active and the passive
communication mode at different bit rates.
© ISO/IEC 2022 – All rights reserved
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ISO/IEC FDIS 18092:2023(E)

© ISO/IEC 2022 – All rights reserved
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© ISO/IEC
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FINAL
INTERNATIONAL ISO/IEC
DRAFT
STANDARD FDIS
18092
ISO/IEC JTC 1/SC 6
Telecommunications and information
Secretariat: KATS
exchange between systems — Near
Voting begins on:
2023-09-01 Field Communication Interface and
Protocol 1 (NFCIP-1)
Voting terminates on:
2023-10-27
Télécommunications et échange d'information entre systèmes —
Communication de champ proche — Interface et protocole (NFCIP-1)
RECIPIENTS OF THIS DRAFT ARE INVITED TO
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
Reference number
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
ISO/IEC FDIS 18092:2023(E)
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN-
DARDS TO WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS. © ISO/IEC 2023

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ISO/IEC FDIS 18092:2023(E)
FINAL
INTERNATIONAL ISO/IEC
DRAFT
STANDARD FDIS
18092
ISO/IEC JTC 1/SC 6
Telecommunications and information
Secretariat: KATS
exchange between systems — Near
Voting begins on:
Field Communication Interface and
Protocol 1 (NFCIP-1)
Voting terminates on:
Télécommunications et échange d'information entre systèmes —
Communication de champ proche — Interface et protocole (NFCIP-1)
COPYRIGHT PROTECTED DOCUMENT
© ISO/IEC 2023
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
RECIPIENTS OF THIS DRAFT ARE INVITED TO
ISO copyright office
SUBMIT, WITH THEIR COMMENTS, NOTIFICATION
OF ANY RELEVANT PATENT RIGHTS OF WHICH
CP 401 • Ch. de Blandonnet 8
THEY ARE AWARE AND TO PROVIDE SUPPOR TING
CH-1214 Vernier, Geneva
DOCUMENTATION.
Phone: [phone]
IN ADDITION TO THEIR EVALUATION AS
Reference number
Email: [e-mail]
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO­
ISO/IEC FDIS 18092:2023(E)
Website: www.iso.org
LOGICAL, COMMERCIAL AND USER PURPOSES,
DRAFT INTERNATIONAL STANDARDS MAY ON
Published in Switzerland
OCCASION HAVE TO BE CONSIDERED IN THE
LIGHT OF THEIR POTENTIAL TO BECOME STAN­
DARDS TO WHICH REFERENCE MAY BE MADE IN
ii
  © ISO/IEC 2023 – All rights reserved
NATIONAL REGULATIONS. © ISO/IEC 2023

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ISO/IEC FDIS 18092:2023(E)
Contents Page
Foreword .v
Introduction . vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviated terms.3
5 Conventions and notations . .6
5.1 Representation of numbers . 6
5.2 Names . 6
6 Conformance . 6
7 General . 6
8 RF field . 7
8.1 Values . 7
8.2 Passive communication mode . 7
8.3 Active communication mode. 7
8.4 External RF field detection . . 7
9 RF signal interface . 7
9.1 General . 7
9.2 Bit duration . 7
9.3 Active communication mode. 8
9.3.1 General . 8
9.3.2 Requirements for f /128 . 8
c
9.3.3 Requirements for f /64 and f /32 . 8
c c
9.4 Passive communication mode . 9
9.4.1 Requirements for f /128 . 9
c
9.4.2 Requirements for f /64 and f /32 . 10
c c
10 General Protocol flow .10
11 Initialisation .11
11.1 General . 11
11.2 RF Collision Avoidance (RFCA) .12
11.2.1 General .12
11.2.2 Initial RFCA .12
11.2.3 Response RF Collision Avoidance (RFCA) .13
11.3 Passive communication mode . 14
11.3.1 Initialisation and SDD for f /128 . 14
c
11.3.2 Initialisation and SDD for f /64 and f /32 . 14
c c
11.4 Active communication mode. 17
11.4.1 Initialisation . 17
11.4.2 Active communication mode RFCA . 17
12 Transport protocol .18
12.1 General . 18
12.2 Transport Data . 18
12.3 Passive communication mode Activation flow . 19
12.4 Active communication mode Activation flow . 20
12.5 Commands .22
12.6 Activation of the protocol .23
12.6.1 Attribute Request and Response Commands .23
12.6.2 Wakeup Request and Response Commands .29
12.6.3 Parameter Selection Request and Response Commands . 31
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ISO/IEC FDIS 18092:2023(E)
12.7 Data Exchange Protocol . 33
12.7.1 Data Exchange Protocol Request and Response . 33
12.7.2 Response timeout extension .38
12.7.3 Attention — Target present .38
12.7.4 Protocol operation .38
12.7.5 Multi­Activation .38
12.7.6 More information (Chaining) .39
12.8 Deactivation of the protocol .39
12.8.1 General .39
12.8.2 Deselect Request and Response command .40
12.8.3 Release Request and Response commands . 41
Annex A (normative) CRC calculation .43
Annex B (informative) SAK .45
Bibliography .46
iv
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ISO/IEC FDIS 18092:2023(E)
Foreword
ISO (the International Organization for Standardization) and IEC (the International Electrotechnical
Commission) form the specialized system for worldwide standardization. National bodies that are
members of ISO or IEC participate in the development of International Standards through technical
committees established by the respective organization to deal with particular fields of technical
activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international
organizations, governmental and non­governmental, in liaison with ISO and IEC, also take part in the
work.
The procedures used to develop this document and those intended for its further maintenance
are described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria
needed for the different types of document should be noted. This document was drafted in
accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives or
www.iec.ch/members_experts/refdocs).
ISO and IEC draw attention to the possibility that the implementation of this document may involve the
use of (a) patent(s). ISO and IEC take no position concerning the evidence, validity or applicability of
any claimed patent rights in respect thereof. As of the date of publication of this document, ISO and IEC
had not received notice of (a) patent(s) which may be required to implement this document. However,
implementers are cautioned that this may not represent the latest information, which may be obtained
from the patent database available at www.iso.org/patents and https://patents.iec.ch. ISO and IEC shall
not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see
www.iso.org/iso/foreword.html. In the IEC, see www.iec.ch/understanding­standards.
This document was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology,
Subcommittee SC 6, Telecommunications and information exchange between systems.
This third edition cancels and replaces the second edition (ISO/IEC 18092:2013), which has been
technically revised. It also incorporates ISO/IEC 18092:2013/Cor 1:2015.
The main changes are as follows:
— adoption of near field communication (NFC) security standard for the Target;
[2]
— harmonization with the NFC Forum Digital Protocol Technical Specification and Activity Technical
[3]
Specification .
Any feedback or questions on this document should be directed to the user’s national standards
body. A complete listing of these bodies can be found at www.iso.org/members.html and
www.iec.ch/national­committees.
v
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ISO/IEC FDIS 18092:2023(E)
Introduction
This document specifies the interface and protocol for simple wireless communication between close
coupled devices. These Near Field Communication (NFC) devices communicate with bit rates of 106,
212 and 424 kbit/s ( f /128, f /64 and f /32).
c c c
This allows, but does not specify, applications in network products and consumer equipment.
The first edition of ISO/IEC 18092 was prepared by Ecma International (as ECMA-340) and was
adopted, under a special “fast-track procedure”, by Joint Technical Committee ISO/IEC JTC 1/SC 6
in parallel with its approval by national bodies of ISO and IEC. The second edition of ISO/IEC 18092
was maintained by ISO/IEC JTC 1/SC 6 and Ecma International. This third edition of ISO/IEC 18092 is
maintained by ISO/IEC JTC 1/SC 6 with the goal to be harmonized with the NFC Forum Digital Protocol
[2] [3]
Technical Specification and Activity Technical Specification maintaining backward compatibility,
to enable the NFC security feature and to incorporate clarifications on timings of radio frequency (RF)
field switched off.
vi
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FINAL DRAFT INTERNATIONAL STANDARD ISO/IEC FDIS 18092:2023(E)
Telecommunications and information exchange between
systems — Near Field Communication Interface and
Protocol 1 (NFCIP-1)
1 Scope
This document defines:
— communication modes for Near Field Communication Interface and Protocol 1 (NFCIP­1) using
inductive coupled devices operating at the centre frequency of 13,56 MHz for interconnection of
computer peripherals;
— both the active and the passive communication modes of NFCIP­1 to realize a communication
network using Near Field Communication (NFC) devices for networked products and for consumer
equipment;
— a transport protocol including protocol activation and data exchange methods.
This document specifies:
— modulation schemes;
— codings;
— bit rates;
— frame format of the radio frequency (RF) interface;
— initialisation schemes and conditions required for data collision control during initialisation.
Information interchange between systems is based on agreement between the interchange parties
upon the interchange codes and the data structure.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO/IEC 13157­1, Information technology — Telecommunications and information exchange between
systems — NFC Security — Part 1: NFC-SEC NFCIP-1 security services and protocol
ISO/IEC 14443­2:2020, Cards and security devices for personal identification — Contactless proximity
objects — Part 2: Radio frequency power and signal interface
ISO/IEC 14443­3:2018, Cards and security devices for personal identification — Contactless proximity
objects — Part 3: Initialization and anticollision
ITU­T V.41:1988, Code-independent error-control system
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO/IEC 14443-2 and
ISO/IEC 14443-3, and the following apply.
1
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ISO/IEC FDIS 18092:2023(E)
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
active communication mode
mode in which both the Initiator (3.5) and the Target (3.16) use their own radio frequency (RF) field to
enable the communication
3.2
collision
transmission by two or more Targets (3.16) or Initiators (3.5) during the same time period (3.17), such
that the Initiator or the Target is unable to distinguish from which Target the data originated
3.3
frame
sequence of data bits and optional error detection bits, with frame delimiters at start and end
3.4
H
Threshold
threshold value to detect an external radio frequency (RF) field
3.5
Initiator
entity that generates the radio frequency (RF) field and starts the Near Field Communication Interface
and Protocol (NFCIP­1) communication
3.6
load modulation
process of amplitude modulating a radio frequency (RF) field by varying the properties of a resonant
circuit placed within the RF field
3.7
lsb first
least significant bit first
least significant bit first, indicating a serial data transmission system that sends lsb before all other bits
3.8
Manchester bit encoding
method of bit coding whereby a logic level during a bit duration is represented by a sequence of two
defined physical states of a communication medium
3.9
modulation index
signal amplitude ratio of the modulation to the level of the unmodulated carrier, calculated by:
[1 − b] / [1 + b]
where b is the ratio between the modulated amplitude and the initial signal amplitude
3.10
msb first
most significant bit first
serial data transmission system that sends the msb before all other bits
3.11
NFCIP-1 device
entity supporting the active communication mode (3.1) and the passive communication mode (3.13)
2
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ISO/IEC FDIS 18092:2023(E)
3.12
NFC identifier
NFCIDn (n = 1, 2 or 3)
number used by the Single Device Detection (3.15) sequence for both the Active communication mode
(3.1) and the Passive communication mode (3.13)
3.13
passive communication mode
mode when the Initiator (3.5) is generating the radio frequency (RF) field and the Target (3.16) responds
to an Initiator command in a load modulation scheme
3.14
RF Collision Avoidance
RFCA
method to detect the presence of a radio frequency (RF) field based on the carrier frequency
3.15
Single Device Detection
SDD
algorithm used by the Initiator (3.5) to detect one out of several Targets (3.16) in its radio frequency
(RF) field
3.16
Target
entity that responds to Initiator (3.5) command either using load modulation scheme (radio frequency
(RF) field generated by Initiator) or using modulation of self-generated RF field
3.17
time period
number of slots used for RF Collision Avoidance (3.14)
3.18
time slot
method of preparing a time window when a Target (3.16) answers, and assigning and identifying two or
more logic channels
4 Symbols and abbreviated terms
The abbreviated terms in ISO/IEC 14443-2 and ISO/IEC 14443-3, and the following apply.
ATR Attribute
ATR_REQ Attribute Request
ATR_RES Attribute Response
BRi receiving bit duration supported by Initiator
BRt receiving bit duration supported by Target
Bsi sending bit duration supported by Initiator
BSt sending bit duration supported by Target
CMD command
CRC cyclic redundancy check
D divisor
3
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ISO/IEC FDIS 18092:2023(E)
DEP Data Exchange Protocol
DEP_REQ Data Exchange Protocol Request
DEP_RES Data Exchange Protocol Response
DIDi Initiator Device ID
DIDt Target Device ID
DRi Data rate Received by Initiator
DRt Data rate Received by Target
DSi Data rate Send by Initiator
DSL Deselect
DSL_REQ Deselect Request
DSL_RES Deselect Response
DSt Data rate Send by Target
etu elementary time unit
f frequency of operating field (carrier frequency)
c
G(x) generator polynomial for CRC generation
Gi optional information field for Initiator
Gt optional information field for Target
HLTA HaLT command, Type A
H maximum field strength of the Initiator antenna field
max
H minimum field strength of the Initiator antenna field
min
H threshold value to detect an external radio frequency (RF) field
Threshold
ID identification number
LEN maximum frame size
MAX
LRi length reduction of Initiator
LRt length reduction of Target
lsb least significant bit
lsb first least significant bit first
LSB Least Significant Byte
MI Multiple Information link for Data Exchange Protocol
msb most significant bit
MSB Most Significant Byte
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ISO/IEC FDIS 18092:2023(E)
NAD Node Address
NFCID1 UID for SDD in Passive communication mode at f /128
c
NFCID2 ID for SDD in Passive communication mode at f /64 and fc/32
c
NFCID3 random ID for transport protocol activation
NFC­SEC NFCIP-1 Security Services and Protocol (specified in ISO/IEC 13157-1)
PA preamble
PCD Proximity Coupling Device
pdu protocol data unit
PFB control information for transaction
PICC proximity card or object
PNI Packet Number Information
PPi Protocol Parameters used by Initiator
PPt Protocol Parameters used by Target
PSL Parameter Selection
PSL_REQ Parameter Selection Request
PSL_RES Parameter Selection Response
RF Radio Frequency
RFCA RF Collision Avoidance
RFU Reserved for Future Use
RLS Release
RLS_REQ Release Request
RLS_RES Release Response
t Response Waiting Time
RW
SAK Select AcKnowledge
SB start byte for data exchange protocol at f /128
c
SDD Single Device Detection (anticollision)
SYNC synchronisation pattern
TO Time Out
UID Unique Identifier
WT Waiting Time
WUP Wakeup
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ISO/IEC FDIS 18092:2023(E)
WUPA Wake UP command, Type A
WUP_REQ Wakeup Request
WUP_RES Wakeup Response
5 Conventions and notations
5.1 Representation of numbers
The following conventions and notations apply in this document unless otherwise stated:
— Letters and digits in single quotation marks represent numbers in hexadecimal notation.
— The setting of bits is denoted by ZERO or ONE.
— Numbers in binary notation and bit patterns are represented by strings of digits 0 and 1 shown with
the most significant bit to the left. Within such strings, X may be used to indicate that the setting of
a bit is not specified within the string, e.g. (XXXX)b.
5.2 Names
The names of basic elements, e.g. specific fields, are written with a capital initial letter.
6 Conformance
A system implementing the active and the passive communication mode shall be in conformance with
this document if it meets all the mandatory requirements specified herein.
7 General
NFCIP­1 Targets and Initiators shall implement both the active and the passive communication modes.
In the active communication mode, both the Initiator and the Target use their own RF field to
communicate. The Initiator starts the NFCIP­1 transaction, which consists of initialisation, protocol
activation, data exchange and optional device deactivation. The Target responds to an Initiator
command in the active communication mode by modulating its own RF field.
In the passive communication mode, the Initiator generates the RF field and starts the transaction.
The Target responds to an Initiator command in the passive communication mode by modulating the
Initiators’ RF field, which is referred to as load modulation.
This document specifies requirements for modulation, bit rates and bit coding. In addition, it specifies
requirements for the start of communication, the end of communication, the bit and byte representation,
the framing and error detection, the single device detection (SDD), the protocol activation and
parameter selection and the data exchange and deactivation of NFCIP-1 devices.
Initiators and Targets exchange commands, responses and data in alternating or half duplex
communication.
NFCIP­1 devices are capable to start transactions at bit rates of f /128, f /64 and f /32. Initiators select
c c c
one of those bit rates to start a transaction and they may change the bit rate using the parameter
selection during a transaction.
The mode (active or passive) shall not be changed during a transaction.
6
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