on"><i class="fas fa-arrow-right"></i></div>
                            <h4>PAM4 Input</h4>
                            <p>7-bit ADC samples<br>4 voltage levels<br>Symbol rate input</p>
                        </div>
                        <div class="flow-stage">
                            <div class="stage-icon"><i class="fas fa-adjust"></i></div>
                            <h4>AGC</h4>
                            <p>Digital gain control<br>Power normalization<br>Amplitude scaling</p>
                