_PHY.h) </p>
<p>The following section describes the Ethernet PHY Interface as defined in the Driver_ETH_PHY.h header file.</p>
<p>The Driver_ETH_PHY.h contains two #defines that are used to configure the connection between the PHY and the microcontroller device:</p>
<ul>
<li><code>ETH_PHY_NUM</code> and</li>
<li><code>ETH_PHY_ADDR</code> </li>
</ul>
<p>Usually, the Serial Management Interface (<b>SMI</b>) (using MDC and MDIO) is used to access the PHY’s internal registers to read the state of the link (up