First, it can replace “can” and give the phrase a more conditional tone. Second, it can function as a the past tense of “can”. Third, it can function in the same way as “might” or “may”, suggesting that something is a possibility. The negative of can is “could not” or the contraction “couldn’t”. This application report presents an introduction to the CAN fundamentals, operating principles, and the implementation of a basic CAN bus with TI's CAN transceivers and DSPs. Part A describing the CAN message format as it is defined in CAN Specification 1.2; Part B describing both standard and extended message formats. The CAN Interface module provides CAN communication abstracted access to the CAN Driver and CAN Transceiver Driver services for control and supervision of the CAN network. The AUTOSAR CAN Network Management is a hardware independent protocol that can only be used on CAN 1 (for limitations refer to section 4.1). Its main purpose is to coordinate the transition between normal operation and bus-sleep mode of the network. 本資料では、最初に、CAN の基本を学びたいという方々のためにCANを理解するための基礎知識や仕組みを一から解説していきます。 そして次に、CAN FD について知りたいという方々のためにCAN とCAN FDプロトコルとの違いについて解説していきます。 2. Determine the CAN frame, including data length, bit rate switching, identifier, data and so on. Consider which part is fixed and which part need to be changed in the applicatio.