9.1.4.3 Minimizing EMI

High data-transfer rates have the potential to emit radiation. EMI may be minimized using the following techniques:

• Use differential stripline channels on inner layer sandwiched between ground layers instead of routing microstrip pairs on the top layer.
• Avoid routing lanes near the edges of boards.
• Enable data scrambling to spread the frequency content of the transmitted data.
• If the serial lane must travel through an interconnect, choose a connector with good differential pair channels and shielding.
• Ensure lanes are designed with an accurate, 100-Ω characteristic impedance and provide accurate 100-Ω terminations inside the receiving device.