Can Fd Port - Sferalabs Iono Pi Max v2 3+ Lite User Manual

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RS-485 JUMPERS AND SWITCH POSITION

CAN FD port

The CAN interface is based on the Microchip MCP2518FD CAN FD Controller and the

Microchip MCP2558FD high-speed CAN FD transceiver. They implement both CAN 2.0B

and CAN FD modes, with support for up to 8 Mbps data rate and 1 Mbps arbitration rate.

The CANH and CANL lines are available on the terminal block.

The CAN transceiver's TX and RX lines are isolated from the CAN controller with

dedicated opto-couplers. The CAN transceiver is also galvanically isolated from the CAN

controller and the Raspberry Pi in general with the same high-efﬁciency DC-DC converter

used to power the RS-485 line drivers.

The IGND terminal is the isolated ground reference for the CAN port. Always use this line,

not GND, for the CAN connection.

A 120 Ohm termination resistor between CANH and CANL can be enabled installing

jumper JP3, located on the bottom side of the base board, opposite the CAN terminal

block.

CAN TERMINATION JUMPER SCHEMATIC

Iono Pi Max User Guide

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