 <td>bit_select</td>
        <td>input</td>
        <td align="center">2</td>
        <td>The output mux selection bits that selects the output bit (start bit, serial data bit, parity bit, or stop bit).</td>
    </tr>
    <tr>
        <td>serial_data</td>
        <td>input</td>
        <td align="center">1</td>
        <td>The bit that is serially transmitted from the UART transmitter (i.e. the output bit from the serializer).</td>
    </tr>  
    <tr>
        <td>parity_bit</td>
        <td>input</td>
    