ain clock of the system.</td>
    </tr>
    <tr>
        <td>UART_clk</td>
        <td>input</td>
        <td align="center">1</td>
        <td>UART clock (the clock of the UART receiver).</td>
    </tr>
    <tr>
        <td>reset</td>
        <td>input</td>
        <td align="center">1</td>
        <td>Unsynchronized global active low asynchronous reset.</td>
    </tr>
    <tr>
        <td>serial_data_in</td>
        <td>input</td>
        <td align="center">1</td>
        <td>The data which is received se