# MR-MCXN-T1 Hub overview

The MR-MCXN-T1 Hub is the sensor and I/O node reference design of the NXP Mobile Robotics family.
It is a networked node built around an NXP MCXN947 microcontroller that aggregates sensors and
distributes them over automotive 100BASE-T1 Ethernet and CAN-FD, acting as a distributed sensor /
I/O hub in a time-sensitive networking (TSN) robotics system. The board is intended as a validated
node design that customers can evaluate, reproduce, and extend with their own shields.

The MCXN947 is an NXP Arm Cortex-M33 microcontroller with integrated analog and communication
peripherals. It runs Zephyr RTOS or the Cerebri (CogniPilot) ROS 2 stack and bridges on-board
sensors to the robotics network through its Ethernet and CAN-FD interfaces.

## Functional block diagram

  

```{image} resources/mr-mcxn-t1-block-diagram.svg
:alt: MR-MCXN-T1 Hub functional block diagram
:width: 840px
:align: center
```



Figure 1. MR-MCXN-T1 Hub functional block diagram

## Main components

The reference design integrates the following main NXP components and interfaces:

- MCXN947 microcontroller (Arm Cortex-M33)
- 3.3 V and 1.8 V regulation from a 3S to 12S input through NXP NX5P3363 load switches and a DCDC regulator
- ICM-45686 inertial sensor, BMM350 magnetometer, and BMP581 barometer
- 100BASE-T1 automotive Ethernet through the NXP TJA1103 PHY
- Two CAN-FD channels through NXP TJA1462 transceivers
- USB 2.0, addressable RGB LED, and an SWD / console debug connector
- Two DF40TC board-to-board connectors exposing FlexComm, FlexIO, ADC, comparator, DAC, SAI, PDM, and FlexPWM for shields

NXP also provides the complete hardware Bill of Materials and design files, enabling customers to
evaluate, reproduce, and customize the reference platform for their own products.

For overview information, documentation, software, tools, and ordering details, see the
[MR-MCXN-T1 product page](https://www.nxp.com/design/design-center/development-boards-and-designs/MR-MCXN-T1)
on the NXP web site.