Transmission Line Primer
Jetson AGX Xavier Series Product DG-09840-001_v2.5 | 135
Figure 21-5. Crosstalk on Reference Plane
ï‚„ Reference plane selection
• Solid ground is preferred as reference plane.
• Solid power can be used as reference plane with decoupling capacitors near driver and
receiver.
• Reference plane cuts and layer changes need to be avoided.
ï‚„ Power plane cut example (Figure 21-6)
• Power plane cuts will cause EMI issues.
• Power plane cuts also induce crosstalk to adjacent signals.
Figure 21-6. Power Plane Cuts Example
ï‚„ When cut is unavoidable:
• Place decoupling capacitors near transition.
• Place transition near source or receiver when decoupling capacitors are abundant
(Figure 21-7).
Figure 21-7. Power Plane Cuts Example when Decouple Capacitors are
abundant
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