Signal Integrity Report – IT3 (25mm)
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Figure 10 Power Sum of FEXT for pair 8 of connector only
Figure 11 ICR profile of FEXT for pair 8 of connector only
The ICR profile for NEXT is not as critical since the TX and RX wafers can be grouped
separately. The ICR profile for FEXT satisfies the IEEE 802.3ap spec up to 20GHz. For further ICR
improvement, some pins can be “skipped”. In this document, we will analyze the IT3 with 60% and
50% pin density assignment. For non-fully-populated pin assignments, the skipped pins are
terminated each to 50Ω to avoid resonance.