d>
   <td align="left">2.5 V</td>
</tr>
<tr>
   <td align="left">CLOCK4_50</td>
   <td align="left">K14</td>
   <td align="left">input </td>
   <td align="left">3.3-V LVTTL</td>
</tr>
<tr>
   <td align="left">CLOCK_50</td>
   <td align="left">AF14</td>
   <td align="left">input </td>
   <td align="left">3.3-V LVTTL</td>
</tr>
</table>
<h2><a name="KEY"></a></h2><table border="3">
<caption  align="left">KEY</caption>
<br />
<br />
<tr>
   <th align="left" bgcolor="Khaki">Name</th>
   <th align="left" bgcolor