> For the complete documentation index, see [llms.txt](https://teravolt.gitbook.io/teravolt/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://teravolt.gitbook.io/teravolt/gps/aeronav-x5/interfaces-and-data-protocols.md).

# Interfaces & Data Protocols

####

<figure><img src="/files/M3JvPEMYJJWRv6VwCm67" alt=""><figcaption></figcaption></figure>

#### **Hardware Interfaces**

| Interface                  | Specification                        |
| -------------------------- | ------------------------------------ |
| Serial UART                | 3× (LVTTL, up to 4 Mbps)             |
| USB                        | 1× USB Type-C (USB 2.0 High-Speed)   |
| PPS Output                 | 1× configurable (via MMCX connector) |
| Ethernet *(optional)*      | 1× RMII/MDIO, 10/100 Mbps            |
| SDIO *(optional)*          | 1× mass storage                      |
| GPIO *(optional)*          | 2× user-programmable                 |
| Event Markers *(optional)* | 2×                                   |

#### **Firmware**

{% hint style="success" %}
**Free product lifetime upgrades.**
{% endhint %}

#### **Supported Protocols**

| Protocol | Details                                        |
| -------- | ---------------------------------------------- |
| SBF      | Septentrio Binary Format (proprietary)         |
| NMEA     | NMEA 0183 — v2.3, v3.03, v4.0                  |
| RINEX    | v2.x, v3.x                                     |
| RTCM     | v2.x, v3.x (MSM included)                      |
| CMR      | CMR v2.0 (output and input), CMR+ (input only) |