# Automotive ethernet

The FMU has a [TJA110x](https://www.nxp.com/products/analog/interfaces/in-vehicle-network/ethernet/automotive-ethernet-phy-transceivers:ETHERNET-TRANSCEIVERS) two wire automotive ethernet ([100BASE-T1](https://en.wikipedia.org/wiki/Fast_Ethernet#100BASE-T1)) transceiver . However, this is not yet supported by PX4. Adding driver support to PX4 and implementing the protocol might become a HoverGames task/challenge in the future.

## Connector pinout

| Pin | Signal | Voltage |
| --- | ------ | ------- |
| 1   | ENET N | +3.3V   |
| 2   | ENET P | +3.3V   |

## RDDRONE-FMUK66 Rev. C schematic

![](https://1329960936-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-L9GLtb-Tz_XaKbQu-Al%2F-LVsC1W9Lh4_z_Pu846c%2F-LVsEfB8bTP1ePBNGTX2%2FC-ethernet.png?alt=media\&token=6428e96d-ab08-480f-83a6-99c2f1683080)

## RDDRONE-FMUK66 Rev. B schematic

{% hint style="danger" %}
Rev. B (and older boards) are **not supported** anymore. This information is left for reference.
{% endhint %}

![](https://1329960936-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-L9GLtb-Tz_XaKbQu-Al%2F-LOrvCVzlhjwif35PmiG%2F-LOruF8oVT7XgBM6rxLU%2Fethernet.PNG?alt=media\&token=3024845b-c59e-458b-bb0e-9f0d3de8cde9)