SBC Axel SBC/Interfaces and Connectors/CAN

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Version Issue Date Notes
1.0.0 Oct 2020 First DESK release

CAN[edit | edit source]

Description[edit | edit source]

The CAN interface available on the Evaluation Kit at the connector J23.

J23 is a 3x2x2.54mm header that provides the CAN bus port compatible with the CAN 2.0B protocol. The CAN transceiver is implemented on the AXEL LITE SOM.

CAN connector

Signals[edit | edit source]

The following table describes the interface signals:

Pin# SOM Pin# Pin name Pin function Pin Notes
1,2 - N.A. N.C. Bus termination
3 J10.44 CAN_M Low bus line
4 J10.42 CAN_P High bus line
5 - CAN_SHIELD Shield
6 - DGND Ground

Device mapping[edit | edit source]

CAN device is mapped to can0 device in Linux. The peripheral can be configured using ifconfig and ip link utilities.

Device usage[edit | edit source]

Inserting a jumper on pins 1 and 2 enables 120Ω bus termination.

CAN electrical connections