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SB n° 298: Contact - Clarification of Terminal Timing for Consecutive Characters

v1.0 Specifications
Contact Acceptance Device

EMV® Specification Bulletin No. 298 First Edition September 2023 Contact – Clarification of Terminal Timing for Consecutive Characters This Specification Bulletin clarifies applicability of terminal timing requirements for consecutive characters.

Applicability

This Spec Bulletin applies to:

  • EMV® Level 1 Specifications for Payment Systems, EMV Contact Interface Specification, Version 1.0, October 2022.

Related Documents

  • INTERNATIONAL STANDARD, ISO/IEC 7816-3, Identification cards — Integrated circuit cards — Part 3: Cards with contacts — Electrical interface and transmission protocols, Third edition, 200611-01

Description

This Specification Bulletin clarifies that the section 9.2.2.1 requirement for the maximum interval between the leading edges of the start bits of any two consecutive characters sent by the terminal does not apply in the case of character repetition due to the indication of a parity error. Proposed Specification Changes The wording of section 9.2.2.1 is updated as follows … The maximum interval between the leading edges of the start bits of any two consecutive characters sent by the terminal, other than characters repeated due to the indication of a parity error, shall not exceed 13 + N etus where N is the value returned in TC1 (if TC1='FF' then N shall be taken as 0). …

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Legal Notice

The EMV® Specifications are provided “AS IS” without warranties of any kind, and EMVCo neither assumes nor accepts any liability for any errors or omissions contained in these Specifications. EMVCO DISCLAIMS ALL REPRESENTATIONS AND WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT, AS TO THESE SPECIFICATIONS. EMVCo makes no representations or warranties with respect to intellectual property rights of any third parties in or in relation to the Specifications. EMVCo undertakes no responsibility to determine whether any implementation of the EMV® Specifications may violate, infringe, or otherwise exercise the patent, copyright, trademark, trade secret, know-how, or other intellectual property rights of third parties, and thus any person who implements any part of the EMV® Specifications should consult an intellectual property attorney before any such implementation. Without limiting the foregoing, the Specifications may provide for the use of public key encryption and other technology, which may be the subject matter of patents in several countries. Any party seeking to implement these Specifications is solely responsible for determining whether its activities require a license to any such technology, including for patents on public key encryption technology. EMVCo shall not be liable under any theory for any party’s infringement of any intellectual property rights in connection with the EMV® Specifications Public

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