gin:0; padding:0 ">  38:   input             alert_i,</pre>
<pre style="margin:0; padding:0 ">  39:   // ping input diff pair and ack diff pair</pre>
<pre style="background-color: #C0C0C0; margin:0; padding:0 ">  40:   input alert_rx_t  alert_rx_i,</pre>
<pre style="margin:0; padding:0 ">  41:   // alert output diff pair</pre>
<pre style="background-color: #C0C0C0; margin:0; padding:0 ">  42:   output alert_tx_t alert_tx_o</pre>
<pre style="margin:0; padding:0 ">  43: );</pre>
<pre style="margin:0; padding: