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DP83867CR: Does it need a capacitor at signal line

Part Number: DP83867CR
Other Parts Discussed in Thread: TIDA-00204

Hello,

Our customer use the DP83867 and check the TI-Deign (TIDA-00204).

The customer have a question about the schematics of the Figure 7.

There is a capacitor as 4.7pF at the PHY1_TD_x_P/N.

What is the purpose of the capacitor?

Best Regards,

Naoki Aoyama