/tags/out-of-band/ Recent content in Out-of-Band on kate's lab notebook Hugo en-us Mon, 14 Sep 2020 10:04:21 -0600 /post/serdes-oob/ Mon, 14 Sep 2020 10:04:21 -0600 /post/serdes-oob/ <p><em>This post is a summary of the findings from <a href="/post/serdes-lfps/">my look at using the ECP5 SerDes for USB3 LFPS</a> for quick reference of how to use the ECP5 SerDes semi-documented out-of-band I/O features.</em></p> <p>Quick summary:</p> <ul> <li>In addition to using the ECP5&rsquo;s SerDes pins to drive the SerDes; the SerDes Tx/Rx pins can also be used as Low-Data-Rate (LDR) outputs/inputs while the SerDes is in use.</li> <li>This is intended to allow transmission/receipt of out-of-band signals in addition to normal SerDes operation; and thus requires a configured SerDes.</li> </ul> <h4 id="documentation">Documentation</h4> <p>To use this functionality, add the following to the invocation of the SerDES <code>DCUA</code> block, replacing <code>CHX</code> with your channel number:</p>