> For the complete documentation index, see [llms.txt](https://nxp.gitbook.io/mr-canhubk344/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://nxp.gitbook.io/mr-canhubk344/hardware/connectors-and-user-i-o.md).

# Connectors & User I/O

The MR-CANHUBK344 board includes a variety of connectors to permit access to the on-chip interfaces. The intended application space is mobile robotics, which mostly defined the Dronecode JST-GH connectors and pinouts. Where an interface did not have a formal Dronecode standard, a typical derivative pinout was used. To support power input directly from a battery, a wide input voltage range is supported from 5V to 40V. The 100Base-T1 2-wire Automotive Ethernet interface uses the latest TJA1103 Ethernet PHY. Also included is a SE050 Secure Element for authentication into the system and also NFC interface into the board.

## Evaluation Board Block Diagram

<figure><img src="/files/G7OZxQ1d0SUEyloQWCw9" alt=""><figcaption><p>Evaluation board block diagram</p></figcaption></figure>

<figure><img src="/files/kqPfHLl0NQB5qX3QNKHr" alt=""><figcaption><p>Connectors used in CAN-over-Ethernet demo</p></figcaption></figure>