Infineon S6BT112A, Getting Started

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Application Note Please read the Important Notice and Warnings at the end of this document 002-27376 Rev. *A
www.infineon.com page 1 of 19 2021-06-15
AN227376
Getting Started with CXPI Transceiver
S6BT112A
About this document
Scope and purpose
AN227376 introduces you to the Japanese Automotive Standards Organization (JASO) Clock Extension
Peripheral Interface (CXPI)-compliant S6BT112A transceiver chip, which has the unique wave-shaping function
for low Electromagnetic Interference (EMI). This application note describes an example of hardware connection
with the CXPI data link controller (MCU) and the CXPI bus line. In addition, it explains how the data link
controller shifts the operation mode and arbitrates transmission with the CXPI protocol.
Associated Part Family
S6BT112A
Related Documents
S6BT112A Datasheet
Table of contents
About this document ....................................................................................................................... 1
Table of contents ............................................................................................................................ 1
1 CXPI communication protocol ................................................................................................. 3
2 S6BT112A CXPI transceiver ...................................................................................................... 4
3 Hardware configuration .......................................................................................................... 6
3.1 Master node connection example .......................................................................................................... 6
3.2 Slave node connection example ............................................................................................................. 6
4 Software configuration ........................................................................................................... 8
4.1 Mode transition ....................................................................................................................................... 8
4.1.1 Mode transition diagram ................................................................................................................... 8
4.1.2 Transition from Normal mode to Sleep mode .................................................................................. 9
4.1.3 Transition from Sleep mode to Normal mode ................................................................................ 10
4.1.3.1 Master node trigger ..................................................................................................................... 10
4.1.3.2 Slave node trigger ....................................................................................................................... 11
4.2 Arbitration ............................................................................................................................................. 13