FS2302M datasheet(65/230 Pages) NXP

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NXP Semiconductors

FS23

Safety system basis chip (SBC) with power management, CAN FD and LIN transceivers

18 Physical layers

18.1 CAN FD transceiver

The FS23 device includes a 5 Mbps capable, integrated CAN FD transceiver, developed in compliance with

the ISO 11898-2:2016 and SAE J2284 standards and SAE J2962-2 (2019) and IEC 62228-3 (2019) for EMC

performance. The CAN transceiver provides the physical interface between the CAN protocol controller of an

MCU and the physical CAN bus.

The CAN FD transceiver bus driver is supplied internally by the V3 regulator.

aaa-051456

VDIG

VDDIO

VDIG

CANH

RL/2

System CAN bus

CCANH

CCANL

CANL

Optional

CANFD

VDIG_LP

WAKE

Figure 35. CAN FD transceiver internal diagram, with external components

18.1.1 CAN operating modes

The CAN transceiver has four modes: Off, Wake-capable, Listen-only, and Active. The Listen-only and Active

modes are only available when the device is in Normal mode. In Low-power modes, the transceiver can be kept

in Wake-capable mode in order to be used as a wake-up source for the device and the module.

By default, the CAN FD transceiver is disabled (set to Offline mode) when one of the safety outputs RSTB,

FS0B, or LIMP0 is asserted in Normal mode. This can be configured by SPI/I2C using CAN_FS_DIS bit.

FS23

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 7.0 — 16 October 2024

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