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SAE J2366/2 (NOV2001)

Link Layer
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SAE J2366/2 (NOV2001)

Link Layer

PUBLISH DATE 2001
PAGES 38
SAE J2366/2 (NOV2001)
This SAE Recommended Practice details the Link Layer of the Intelligent Transportation Systems (ITS) Data Bus, which is generally intended for in-vehicle use. The ITS Data Bus (IDB) is a non-proprietary token passing bus, designed to allow disparate consumer, vehicle, and commercial electronic components to communicate and share information across a standard, open data bus. This first version of the IDB is called IDB-C. This Recommended Practice describes the Link Layer of the IDB-C, as shown in Section 1 . Below the Link Layer of the IDB-C is the CAN 2.0B Link Layer. The Physical Layer of the IDB-C incorporates the Physical Layer as specified by SAE J2366-1 and J2590. The IDB-C Link Layer is logically divided into two functional sub-layers, viz., Logical Link Control (LLC) and Media Access Control (MAC). However, these are logical groupings that re-use some of the same bits within the CAN 2.0B frame for efficiency. The MAC sub-layer handles all media access functions, such as virtual token handling, addressing, and notifications of IDB-C configuration changes to other MAC layers on the IDB-C. The LLC sub-layer provides the mechanisms to send and receive point-to-point or broadcast frames to other LLC sub-layers on the IDB-C. In addition, the LLC provides an Alternate Transport Identifier (ATID) allowing more than one set of higher layer protocols to be used on a single Node.
SDO SAE: SAE International
Document Number J2366/2
Publication Date Nov. 27, 2001
Language en - English
Page Count 38
Revision Level 200111
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