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Single Wire Protocol

The Single Wire Protocol (SWP) is a specification for a single-wire connection between the SIM card and a near field communication (NFC) chip in a cell phone. It was under final review by the European Telecommunications Standards Institute (ETSI)[when?].

SWP is an interface between contactless frontend (CLF) and universal integrated circuit card (UICC/SIM card chip). It is a contact-based protocol that is used for contactless communication. C6 pin of UICC is connected to CLF for SWP support. It is a bit-oriented full duplex protocol, i.e. at the same time transmission as well as reception is possible. CLF acts as a master and UICC as a slave. CLF provides the UICC with energy, a transmission clock, data, and a signal for bus management. The data to be transmitted are represented by the binary states of voltage and current on the single wire.

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See also

Sources

  1. ETSI SCP Activity Report 2007.3
  2. The Register, The future of the SIM hangs by a single Wire 2008.4
  3. GSM Association: Requirements For SWP NFC Handsets V2 2008.5
  4. Fast Company: Nokia's 2011 Smartphones Have Built-In Wireless Payment Tech: Take That, Apple!6

References

  1. ETSI TS 102 613 V.11.0.0 - UICC-CLF Interface; Part 1: Physical and data link layer characteristics (Release 11), 2011-09 https://www.etsi.org/deliver/etsi_ts/102600_102699/102622/11.00.00_60/ts_102622v110000p.pdf ↩

  2. ETSI TS 102 622 V.12.1.0 - UICC-CLF Interface; Host Controller Interface (HCI)m 2014-10 (Release 12) https://www.etsi.org/deliver/etsi_ts/102600_102699/102622/12.01.00_60/ts_102622v120100p.pdf ↩

  3. "SCP Activity Report 2007". 7 July 2008. http://portal.etsi.org/scp/activityreport2007.asp ↩

  4. "The future of the SIM hangs by a single wire". The Register. https://www.theregister.co.uk/2008/02/14/swp_sim_nfc/ ↩

  5. "Archived copy" (PDF). www.gsmworld.com. Archived from the original (PDF) on 30 December 2008. Retrieved 22 May 2022.{{cite web}}: CS1 maint: archived copy as title (link) https://web.archive.org/web/20081230101713/http://www.gsmworld.com/documents/reqs_swp_nfc_handsets_v2.pdf ↩

  6. "Nokia's 2011 Smartphones Have Built-In Wireless Payment Tech: Take That, Apple!". 18 June 2010. http://www.fastcompany.com/1661488/nokias-2011-smartphones-have-built-wireless-payment-tech-take-apple ↩