https://devzone.nordicsemi.com/f/nordic-q-a/37104/softdevice-architectureHello, I referred a Softdevice 130,310 &amp; 132 Specification, from where i noticed that softdevice includes Host &amp; Link Layer (As a part of Controller). So, i want to ask the query related to Softdevice Architecture. Does softdevice include Host &amp;en-USTelligent Community 13Thu, 02 Aug 2018 10:49:27 GMThttps://devzone.nordicsemi.com/thread/142578?ContentTypeID=1Thu, 02 Aug 2018 10:49:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:977dd140-9f18-450b-9fc7-f2d7e976374dFrederik<p>Hi</p> <p></p> <p>The SoftDevice includes both a host and a link layer. A Bluetooth controller consists of a link layer and a phy implementation (which is provided in hardware by the nordic SoC&#39;s). See the bluetooth core specification version 5 page 180 for a figure outlining this ( <a href="https://www.bluetooth.org/DocMan/handlers/DownloadDoc.ashx?doc_id=421043">https://www.bluetooth.org/DocMan/handlers/DownloadDoc.ashx?doc_id=421043</a>&nbsp;).</p> <p>The link layer in the SoftDevice however is not not HCI conformant and communicates with the host directly. Therefore it cannot be used together with another host.</p> <p>For more information about which bluetooth components that are included in the SoftDevice see the qualification listing:</p> <p><a href="https://launchstudio.bluetooth.com/ListingDetails/64933">launchstudio.bluetooth.com/.../64933</a></p><div style="clear:both;"></div>