> For the complete documentation index, see [llms.txt](https://auvidea.gitbook.io/fpd-link-iii-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://auvidea.gitbook.io/fpd-link-iii-guide/hardware/hardware-capabilities.md).

# Hardware capabilities

## Deserializer

The Deserializer chip provided by Texas Intruments is capable of connecting up to 4 Serializers. Some other versions of the deserializer chips are only capable of 2 Serializer connections. Auvidea uses them in a variety of hardware configurations to fit in a wide range of different use cases. 

The configuration communication is accomplished over I²C, and the camera data transfer is accomplished over CSI. Both protocols are roouted over the FPD-Link as shown in the diagrams below.

### Dual-Deserializer

<figure><img src="/files/twNdFwDCdOzfxy5yGVp7" alt=""><figcaption></figcaption></figure>

### Hub-Deserializer

<figure><img src="/files/lkwqsXBKaAne895w1j0Z" alt=""><figcaption></figcaption></figure>

### Virtual Channels

Depending on the platform CSI-2 interfaces can support up to 4 virtual channels.  The following table provides a more insight on the platform capabilities. &#x20;

{% hint style="info" %}
virtual channels are used when more than one CSI-2 video stream is transferred over one CSI-2 connection. See [#video-routing](#video-routing "mention").
{% endhint %}

<table><thead><tr><th>Compute Module</th><th data-type="checkbox">Virtual Channel Supported</th></tr></thead><tbody><tr><td>Nano</td><td>false</td></tr><tr><td>TX2 NX</td><td>false</td></tr><tr><td>Xavier-Series</td><td>true</td></tr><tr><td>Orin-Series</td><td>true</td></tr></tbody></table>

### FPD-Link Hardware

The deserializer is limited to 1.6 Gbps on each MIPI CSI-2 data lane. This bandwidth has to be shared with multiple camera streams, if virtual channeling is used on the V3/FPD-Link III Port. &#x20;

## Video routing

### Hub-Deserializer

Deserializer chips, with more than one CSI interface, are providing the free choice to route the data for each camera stream to one exposed CSI-Channels of the Jetson module. &#x20;

| ![](/files/0rlxPDIGvyhddPqEdUh8) | ![](/files/99i3dGcQjlLs45p7XUme) |
| -------------------------------- | -------------------------------- |

### Dual-Deserilalizer

In comparison, the Deserializer Chip with only one interface is limited to the following configuration.&#x20;

<figure><img src="/files/IHksMY9hlVV9p4UioAw7" alt="" width="375"><figcaption></figcaption></figure>

## Demonstration setup

<figure><img src="/files/CXWLO8G9G9G4ti2IZyas" alt=""><figcaption></figcaption></figure>

### Components

This system is a good starting point for FPD-Link III camera developement.&#x20;

{% hint style="info" %}
Feel free to contact <sales@auvidea.eu> with the following components or a note to this page, if you want a replica of this demonstration system.&#x20;
{% endhint %}

<table><thead><tr><th width="205">Part</th><th width="111.33333333333331">amount</th><th>Description</th></tr></thead><tbody><tr><td></td><td>1</td><td>Xavier NX, Jetson SoM</td></tr><tr><td>70801/70801-AI</td><td>1</td><td>JNX30M, Carrierboard</td></tr><tr><td></td><td>2</td><td>FPD-Link III Deserializer</td></tr><tr><td></td><td>2</td><td>FPD-Link III camera package.</td></tr><tr><td>38423-30</td><td>2</td><td>(22-Pin to 22-Pin) Connection Jetson -> Deserializer</td></tr></tbody></table>