Editing Local Interconnect Network (section)

== Network topology ==
LIN is a [[Broadcasting (networking)|broadcast]] [[Serial communications|serial]] network comprising 16 nodes (one primary and up to 15 secondary nodes).<ref>
Mary Tamar Tan, Brian Bailey, Han Lin.
[http://ww1.microchip.com/downloads/en/appnotes/00002059b.pdf "Microchip AN2059: LIN Basics and Implementation of the MCC LIN Stack Library on 8-Bit PIC Microcontrollers"].
</ref><ref>
[http://www.atmel.com/Images/Atmel-9281-Two-wire-LIN-Networking_Application-Note.pdf "ATAN0049: Two-wire LIN Networking"].
</ref><ref>
Steve Winder.
[https://books.google.com/books?id=lQPeDAAAQBAJ "Power Supplies for LED Driving"].
p. 284
</ref><ref>[https://www.nxp.com/files-static/training_pdf/29021_S08_SLIN_WBT.pdf "The LIN Short Story"] {{Webarchive|url=https://web.archive.org/web/20201112034846/https://www.nxp.com/files-static/training_pdf/29021_S08_SLIN_WBT.pdf |date=2020-11-12 }}.</ref>

All messages are initiated by the primary node with at most one secondary node replying to a given message identifier. The primary node can also act as a secondary node by replying to its own messages. Because all communications are initiated by the primary node it is not necessary to implement a [[Collision (telecommunications)|collision]] detection.<ref>{{cite web|url=http://www.lin-subbus.de/index.php?pid=5&lang=en&sid=7978e50790ccd16bb12bf6307eae5a74|title=Lin Concept|work=LIN Overview|publisher=LIN Administration|url-status=dead|archive-url=https://web.archive.org/web/20111005152436/http://www.lin-subbus.de/index.php?pid=5&lang=en&sid=252efac88ea251b38ba4af5e973d19fb|archive-date=5 October 2011|access-date=28 October 2011}}</ref>

The primary and secondary nodes are typically [[microcontroller]]s, but may be implemented in specialized hardware or [[Application-specific integrated circuit|ASIC]]s in order to save cost, space, or power.

Current uses combine the low-cost efficiency of LIN and simple sensors to create small networks. These sub-systems can be connected by a back-bone network (i.e. CAN in cars).<ref>{{cite web|url=http://www.lin-subbus.de/index.php?pid=6&lang=en&sid=7978e50790ccd16bb12bf6307eae5a74|title=Target Applications|work=LIN Overview|publisher=LIN Administration|url-status=dead|archive-url=https://web.archive.org/web/20111005152406/http://www.lin-subbus.de/index.php?pid=6&lang=en&sid=252efac88ea251b38ba4af5e973d19fb|archive-date=5 October 2011|access-date=28 October 2011}}</ref>