ISO/IEC 14443-4:2008/DAmd 5.2

Handling rules of RFU bits

Règles de manipulation des bits RFU

Standards Content (sample)

DRAFT AMENDMENT ISO/IEC 14443-4.2:2008/DAM 5
ISO/IEC JTC 1 Secretariat: ANSI
Voting begins on Voting terminates on
2015-06-18 2015-08-18

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION  МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ  ORGANISATION INTERNATIONALE DE NORMALISATION

INTERNATIONAL ELECTROTECHNICAL COMMISSION  МЕЖДУНАРОДНАЯ ЭЛЕКТРОТЕХНИЧЕСКАЯ КОММИСИЯ  COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE

Identification cards — Contactless integrated circuit cards —
Proximity cards —
Part 4:
Transmission protocol
AMENDMENT 5: Handling rules of RFU bits

Cartes d'identification — Cartes à circuit(s) intégré(s) sans contact — Cartes de proximité —

Partie 4: Protocole de transmission
AMENDEMENT 5: Règles de manipulation des bits RFU
ICS 35.240.15

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REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.

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International Organization for Standardization, 2015
International Electrotechnical Commission, 2015
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ISO/IEC 14443-4.2:2008/DAM 5
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ii © ISO/IEC 2015 — All rights reserved
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ISO/IEC 14443-4:2008/FDAM 5:2014(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 non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information

technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.

International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.

The main task of the joint technical committee is to prepare International Standards. Draft International

Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as

an International Standard requires approval by at least 75 % of the national bodies casting a vote.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights.

Amendment 5 to ISO/IEC 14443-4:2008 was prepared by Joint Technical Committee ISO/IEC JTC 1,

Information technology, Subcommittee SC 17, Cards and personal identification.
© ISO/IEC 2014 – All rights reserved iii
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FINAL DRAFT AMENDMENT ISO/IEC 14443-4:2008/FDAM 5:2014(E)
Identification cards — Contactless integrated circuit cards -
Proximity cards — Part 4: Transmission protocol
Amendment 5: Handling rules of RFU bits
Page 2, Clause 4
Add the following paragraphs after last dash:

“For the purposes of this part of ISO/IEC 14443, the following general rule applies:

A PICC or PCD sending RFU bits shall set these bits to the value indicated herein or to (0)b if no value is

given. A PICC or PCD receiving RFU bits shall disregard the value of these bits and shall maintain and not

change its function, unless explicitly stated otherwise.”
Page 6, 5.1 (Amended by ISO/IEC 14443-4:2008/Amd.2:2012)
Replace second dash and NOTE with the following dash and note:

“― Until the RFU values 'D' - 'F' are assigned by ISO/IEC, a PICC receiving a FSDI with a value = 'D' - 'F'

shall interpret it as FSDI = 'C' (FSD = 4 096 bytes).

NOTE This PCD requirement is added for PCD's compatibility with future PICCs when ISO/IEC defines the behaviour

for the RFU values of 'D' - 'F'.”
Delete fourth dash.
Page 7, 5.2.3
Replace first dash with:
“― b8 is RFU.”
Replace fourth dash and NOTE with the following dash and NOTE:

“― Until the RFU values 'D' - 'F' are assigned by ISO/IEC, a PCD receiving a FSCI with a value = 'D' - 'F' shall

interpret it as FSCI = 'C' (FSC = 4 096 bytes).

NOTE This PICC requirement is added for PICC´s compatibility with future PCDs when ISO/IEC defines the

behaviour for the RFU values of 'D' - 'F'.”
Replace Figure 5 with:
© ISO/IEC 2014 – All rights reserved
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ISO/IEC 14443-4:2008/FDAM 5:2014(E)
bb 88 bb 77 bb 66 b5 bb 4 bb3 3 bb2 bb1 1
FSCI
TA(1) is transmitted, if bit is set to (1)b
Y(1)
TB(1) is transmitted, if bit is set to (1)b
TC(1) is transmitted, if bit is set to (1)b
RFU
Figure 5 ― Coding of format byte
Page 8, 5.2.4
Replace third dash with:
“― b4 shall be set to (0)b.”
Replace Figure 6 with:
bb 8 8 bb 77 bb 66 bb55 bb 44 bb 33 bb 22 bb 11
DR=2 supported, if bit is set to (1)b
DR=4 supported, if bit is set to (1)b
DR=8 supported, if bit is set to (1)b
shall be set to (0)b
DS=2 supported, if bit is set to (1)b
DS=4 supported, if bit is set to (1)b
DS=8 supported, if bit is set to (1)b
Only the same D for both directions supported, if bit is set to (1)b
Different D for each direction supported, if bit is set to (0)b
Figure 6 ― Coding of interface byte TA(1)
Replace last paragraph with:

A PCD receiving TA(1) with b4 =(1)b shall interpret it as (b8-b1) = (00000000)b, implying 106kbit/s in both

directions. The definition of TA(1) with b4 = (1)b is otherwise undefined
Page 9, 5.2.5
Replace last two paragraphs with:

“Until the RFU value 15 is assigned by ISO/IEC, a PCD receiving SFGI = 15 shall interpret it as SFGI = 0.

Until the RFU value 15 is assigned by ISO/IEC, a PCD receiving FWI = 15 shall interpret it as FWI = 4.”

© ISO/IEC 2014 – All rights reserved
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ISO/IEC 14443-4:2008/FDAM 5:2014(E)
Page 9, 5.2.6
Replace first dash of second paragraph with:
“― b8 to b3 are each RFU.”
Delete third dash of second paragraph.
Replace Figure 8 with:
bb 88 bb 77 bb 66 bb55 bb 44 bb 33 bb 22 bb 11
NAD supported, if bit is set to (1)b
CID supported, if bit is set to (1)b
Each bit RFU
Figure 8 ― Coding of interface byte TC(1)
Page 11, 5.3.2
Replace first sentence of second paragraph with:
“The PCD shall set (b4 to b1) = (0001)b and (b8 to b6) = (000)b.”
Replace Figure 11 with:
bb 88 bb 77 bb 66 bb55 bb 44 bb 33 bb 22 bb 11
0 0 0 0 0 0 1
shall be set to (0001)b, all other values are RFU
PPS1 is transmitted, if bit is set to (1)b
shall be set to (000)b, all other values are RFU
Figure 11 ― Coding of PPS0
Page 11, 5.3.3
Replace the four dashes of first paragraph with:

"⎯ b8 to b5 shall each be (0)b; a PICC receiving any bit b8 to b5 set to (1)b shall apply 5.6.2.2 (b)."

⎯ The two bit value field (b4, b3) is called DSI and codes the selected divisor integer from PICC to PCD.

⎯ The two bit value field (b2, b1) is called DRI and codes the selected divisor integer from PCD to PICC."

Replace Figure 12 with:
© ISO/IEC 2014 – All rights reserved
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ISO/IEC 14443-4:2008/FDAM 5:2014(E)
bb 88 bb 77 bb 66 bb55 bb 44 bb 33 bb 22 bb 11
...